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Set

Das richtige Management von Arrays kann ein sehr wichtiges Werkzeug sein um leistungsfähigen und optimierten Code zu erzeugen. CakePHP bietet hierfür einige nützliche Methoden in der Set-Klasse. Alle Methoden sind statisch aufrufbar. Beispiel: Set::combine().

Set-compatible Path syntax

The Path syntax is used by (for example) sort, and is used to define a path.

Usage example (using Set::sort()):

$a = array(
    0 => array('Person' => array('name' => 'Jeff')),
    1 => array('Shirt' => array('color' => 'black'))
);
$result = Set::sort($a, '{n}.Person.name', 'asc');
/* $result now looks like:
    Array
    (
        [0] => Array
            (
                [Shirt] => Array
                    (
                        [color] => black
                    )
            )
        [1] => Array
            (
                [Person] => Array
                    (
                        [name] => Jeff
                    )
            )
    )
*/

As you can see in the example above, some things are wrapped in {}‘s, others not. In the table below, you can see which options are available.

Expression

Definition

{n}

Represents a numeric key

{s}

Represents a string

Foo

Any string (without enclosing brackets) is treated like a string literal.

{[a-z]+}

Any string enclosed in brackets (besides {n} and {s}) is interpreted as a regular expression.

This section needs to be expanded.

insert

array Set::insert ($list, $path, $data = null)

Fügt $data in den Array $list ein, unter dem in $path definierten Pfad.

$a = array(
    'pages' => array('name' => 'page')
);
$result = Set::insert($a, 'files', array('name' => 'files'));
/* $result schaut nun so aus:
    Array
    (
        [pages] => Array
            (
                [name] => page
            )
        [files] => Array
            (
                [name] => files
            )
    )
*/

$a = array(
    'pages' => array('name' => 'page')
);
$result = Set::insert($a, 'pages.name', array());
/* $result schaut nun so aus:
    Array
    (
        [pages] => Array
            (
                [name] => Array
                    (
                    )
            )
    )
*/

$a = array(
    'pages' => array(
        0 => array('name' => 'main'),
        1 => array('name' => 'about')
    )
);
$result = Set::insert($a, 'pages.1.vars', array('title' => 'page title'));
/* $result schaut nun so aus:
    Array
    (
        [pages] => Array
            (
                [0] => Array
                    (
                        [name] => main
                    )
                [1] => Array
                    (
                        [name] => about
                        [vars] => Array
                            (
                                [title] => page title
                            )
                    )
            )
    )
*/

sort

array Set::sort ($data, $path, $dir)

Sortiert einen Array nach einem beliebigen Wert, festgelegt nach einem Set-kompatiblen Pfad.

$a = array(
    0 => array('Person' => array('name' => 'Jeff')),
    1 => array('Shirt' => array('color' => 'black'))
);
$result = Set::sort($a, '{n}.Person.name', 'asc');
/* $result schaut nun so aus:
    Array
    (
        [0] => Array
            (
                [Shirt] => Array
                    (
                        [color] => black
                    )
            )
        [1] => Array
            (
                [Person] => Array
                    (
                        [name] => Jeff
                    )
            )
    )
*/

$result = Set::sort($a, '{n}.Shirt', 'asc');
/* $result schaut nun so aus:
    Array
    (
        [0] => Array
            (
                [Person] => Array
                    (
                        [name] => Jeff
                    )
            )
        [1] => Array
            (
                [Shirt] => Array
                    (
                        [color] => black
                    )
            )
    )
*/

$result = Set::sort($a, '{n}', 'desc');
/* $result schaut nun so aus:
    Array
    (
        [0] => Array
            (
                [Shirt] => Array
                    (
                        [color] => black
                    )
            )
        [1] => Array
            (
                [Person] => Array
                    (
                        [name] => Jeff
                    )
            )
    )
*/

$a = array(
    array(7,6,4),
    array(3,4,5),
    array(3,2,1),
);

$result = Set::sort($a, '{n}.{n}', 'asc');
/* $result schaut nun so aus:
    Array
    (
        [0] => Array
            (
                [0] => 3
                [1] => 2
                [2] => 1
            )
        [1] => Array
            (
                [0] => 3
                [1] => 4
                [2] => 5
            )
        [2] => Array
            (
                [0] => 7
                [1] => 6
                [2] => 4
            )
    )
*/

reverse

array Set::reverse ($object)

Set::reverse ist praktisch das Gegenteil von Set::map. Die Methode konvertiert ein Objekt in einen Array. Wenn $object kein Objekt ist, wird es unverändert zurückgegeben.

$result = Set::reverse(null);
// Null
$result = Set::reverse(false);
// false
$a = array(
    'Post' => array('id'=> 1, 'title' => 'First Post'),
    'Comment' => array(
        array('id'=> 1, 'title' => 'First Comment'),
        array('id'=> 2, 'title' => 'Second Comment')
    ),
    'Tag' => array(
        array('id'=> 1, 'title' => 'First Tag'),
        array('id'=> 2, 'title' => 'Second Tag')
    ),
);
$map = Set::map($a); // Mache $a zu einem Objekt
/* $map schaut nun so aus:
    stdClass Object
    (
        [_name_] => Post
        [id] => 1
        [title] => First Post
        [Comment] => Array
            (
                [0] => stdClass Object
                    (
                        [id] => 1
                        [title] => First Comment
                    )
                [1] => stdClass Object
                    (
                        [id] => 2
                        [title] => Second Comment
                    )
            )
        [Tag] => Array
            (
                [0] => stdClass Object
                    (
                        [id] => 1
                        [title] => First Tag
                    )
                [1] => stdClass Object
                    (
                        [id] => 2
                        [title] => Second Tag
                    )
            )
    )
*/

$result = Set::reverse($map);
/* $result schaut nun so aus:
    Array
    (
        [Post] => Array
            (
                [id] => 1
                [title] => First Post
                [Comment] => Array
                    (
                        [0] => Array
                            (
                                [id] => 1
                                [title] => First Comment
                            )
                        [1] => Array
                            (
                                [id] => 2
                                [title] => Second Comment
                            )
                    )
                [Tag] => Array
                    (
                        [0] => Array
                            (
                                [id] => 1
                                [title] => First Tag
                            )
                        [1] => Array
                            (
                                [id] => 2
                                [title] => Second Tag
                            )
                    )
            )
    )
*/

$result = Set::reverse($a['Post']); // Array zurückgeben
/* $result schaut nun so aus:
    Array
    (
        [id] => 1
        [title] => First Post
    )
*/

combine

array Set::combine ($data, $path1 = null, $path2 = null, $groupPath = null)

Erstellt einen assoziativen Array aus $data unter Benutzung des Pfades $path1 für die Schlüssel und optional $path2 für die Werte. Ist $path2 nicht angegeben, werden alle Werte mit null initialisiert (nützlich für Set::merge). Die Werte können auch mit der Angabe des Pfades $groupPath gruppiert werden.

$result = Set::combine(array(), '{n}.User.id', '{n}.User.Data');
// $result == array();

$result = Set::combine('', '{n}.User.id', '{n}.User.Data');
// $result == array();

$a = array(
    array('User' => array('id' => 2, 'group_id' => 1,
        'Data' => array('user' => 'mariano.iglesias','name' => 'Mariano Iglesias'))),
    array('User' => array('id' => 14, 'group_id' => 2,
        'Data' => array('user' => 'phpnut', 'name' => 'Larry E. Masters'))),
    array('User' => array('id' => 25, 'group_id' => 1,
        'Data' => array('user' => 'gwoo','name' => 'The Gwoo'))));

$result = Set::combine($a, '{n}.User.id');
/* $result schaut nun so aus:
    Array
    (
        [2] =>
        [14] =>
        [25] =>
    )
*/

$result = Set::combine($a, '{n}.User.id', '{n}.User.non-existant');
/* $result schaut nun so aus:
    Array
    (
        [2] =>
        [14] =>
        [25] =>
    )
*/

$result = Set::combine($a, '{n}.User.id', '{n}.User.Data');
/* $result schaut nun so aus:
    Array
    (
        [2] => Array
            (
                [user] => mariano.iglesias
                [name] => Mariano Iglesias
            )
        [14] => Array
            (
                [user] => phpnut
                [name] => Larry E. Masters
            )
        [25] => Array
            (
                [user] => gwoo
                [name] => The Gwoo
            )
    )
*/

$result = Set::combine($a, '{n}.User.id', '{n}.User.Data.name');
/* $result schaut nun so aus:
    Array
    (
        [2] => Mariano Iglesias
        [14] => Larry E. Masters
        [25] => The Gwoo
    )
*/

$result = Set::combine($a, '{n}.User.id', '{n}.User.Data', '{n}.User.group_id');
/* $result schaut nun so aus:
    Array
    (
        [1] => Array
            (
                [2] => Array
                    (
                        [user] => mariano.iglesias
                        [name] => Mariano Iglesias
                    )
                [25] => Array
                    (
                        [user] => gwoo
                        [name] => The Gwoo
                    )
            )
        [2] => Array
            (
                [14] => Array
                    (
                        [user] => phpnut
                        [name] => Larry E. Masters
                    )
            )
    )
*/

$result = Set::combine($a, '{n}.User.id', '{n}.User.Data.name', '{n}.User.group_id');
/* $result schaut nun so aus:
    Array
    (
        [1] => Array
            (
                [2] => Mariano Iglesias
                [25] => The Gwoo
            )
        [2] => Array
            (
                [14] => Larry E. Masters
            )
    )
*/

$result = Set::combine($a, '{n}.User.id', array('{0}: {1}', '{n}.User.Data.user', '{n}.User.Data.name'), '{n}.User.group_id');
/* $result schaut nun so aus:
    Array
    (
        [1] => Array
            (
                [2] => mariano.iglesias: Mariano Iglesias
                [25] => gwoo: The Gwoo
            )
        [2] => Array
            (
                [14] => phpnut: Larry E. Masters
            )
    )
*/

$result = Set::combine($a, array('{0}: {1}', '{n}.User.Data.user', '{n}.User.Data.name'), '{n}.User.id');
/* $result schaut nun so aus:
    Array
    (
        [mariano.iglesias: Mariano Iglesias] => 2
        [phpnut: Larry E. Masters] => 14
        [gwoo: The Gwoo] => 25
    )
*/

$result = Set::combine($a, array('{1}: {0}', '{n}.User.Data.user', '{n}.User.Data.name'), '{n}.User.id');
/* $result schaut nun so aus:
    Array
    (
        [Mariano Iglesias: mariano.iglesias] => 2
        [Larry E. Masters: phpnut] => 14
        [The Gwoo: gwoo] => 25
    )
*/

$result = Set::combine($a, array('%1$s: %2$d', '{n}.User.Data.user', '{n}.User.id'), '{n}.User.Data.name');

/* $result schaut nun so aus:
    Array
    (
        [mariano.iglesias: 2] => Mariano Iglesias
        [phpnut: 14] => Larry E. Masters
        [gwoo: 25] => The Gwoo
    )
*/

$result = Set::combine($a, array('%2$d: %1$s', '{n}.User.Data.user', '{n}.User.id'), '{n}.User.Data.name');
/* $result schaut nun so aus:
    Array
    (
        [2: mariano.iglesias] => Mariano Iglesias
        [14: phpnut] => Larry E. Masters
        [25: gwoo] => The Gwoo
    )
*/

normalize

array Set::normalize ($list, $assoc = true, $sep = ',', $trim = true)

Normalizes a string or array list.

$a = array('Tree', 'CounterCache',
        'Upload' => array(
            'folder' => 'products',
            'fields' => array('image_1_id', 'image_2_id', 'image_3_id', 'image_4_id', 'image_5_id')));
$b =  array('Cacheable' => array('enabled' => false),
        'Limit',
        'Bindable',
        'Validator',
        'Transactional');
$result = Set::normalize($a);
/* $result now looks like:
    Array
    (
        [Tree] =>
        [CounterCache] =>
        [Upload] => Array
            (
                [folder] => products
                [fields] => Array
                    (
                        [0] => image_1_id
                        [1] => image_2_id
                        [2] => image_3_id
                        [3] => image_4_id
                        [4] => image_5_id
                    )
            )
    )
*/
$result = Set::normalize($b);
/* $result now looks like:
    Array
    (
        [Cacheable] => Array
            (
                [enabled] =>
            )

        [Limit] =>
        [Bindable] =>
        [Validator] =>
        [Transactional] =>
    )
*/
$result = Set::merge($a, $b); // Now merge the two and normalize
/* $result now looks like:
    Array
    (
        [0] => Tree
        [1] => CounterCache
        [Upload] => Array
            (
                [folder] => products
                [fields] => Array
                    (
                        [0] => image_1_id
                        [1] => image_2_id
                        [2] => image_3_id
                        [3] => image_4_id
                        [4] => image_5_id
                    )

            )
        [Cacheable] => Array
            (
                [enabled] =>
            )
        [2] => Limit
        [3] => Bindable
        [4] => Validator
        [5] => Transactional
    )
*/
$result = Set::normalize(Set::merge($a, $b));
/* $result now looks like:
    Array
    (
        [Tree] =>
        [CounterCache] =>
        [Upload] => Array
            (
                [folder] => products
                [fields] => Array
                    (
                        [0] => image_1_id
                        [1] => image_2_id
                        [2] => image_3_id
                        [3] => image_4_id
                        [4] => image_5_id
                    )

            )
        [Cacheable] => Array
            (
                [enabled] =>
            )
        [Limit] =>
        [Bindable] =>
        [Validator] =>
        [Transactional] =>
    )
*/

countDim

integer Set::countDim ($array = null, $all = false, $count = 0)

Counts the dimensions of an array. If $all is set to false (which is the default) it will only consider the dimension of the first element in the array.

$data = array('one', '2', 'three');
$result = Set::countDim($data);
// $result == 1

$data = array('1' => '1.1', '2', '3');
$result = Set::countDim($data);
// $result == 1

$data = array('1' => array('1.1' => '1.1.1'), '2', '3' => array('3.1' => '3.1.1'));
$result = Set::countDim($data);
// $result == 2

$data = array('1' => '1.1', '2', '3' => array('3.1' => '3.1.1'));
$result = Set::countDim($data);
// $result == 1

$data = array('1' => '1.1', '2', '3' => array('3.1' => '3.1.1'));
$result = Set::countDim($data, true);
// $result == 2

$data = array('1' => array('1.1' => '1.1.1'), '2', '3' => array('3.1' => array('3.1.1' => '3.1.1.1')));
$result = Set::countDim($data);
// $result == 2

$data = array('1' => array('1.1' => '1.1.1'), '2', '3' => array('3.1' => array('3.1.1' => '3.1.1.1')));
$result = Set::countDim($data, true);
// $result == 3

$data = array('1' => array('1.1' => '1.1.1'), array('2' => array('2.1' => array('2.1.1' => '2.1.1.1'))), '3' => array('3.1' => array('3.1.1' => '3.1.1.1')));
$result = Set::countDim($data, true);
// $result == 4

$data = array('1' => array('1.1' => '1.1.1'), array('2' => array('2.1' => array('2.1.1' => array('2.1.1.1')))), '3' => array('3.1' => array('3.1.1' => '3.1.1.1')));
$result = Set::countDim($data, true);
// $result == 5

$data = array('1' => array('1.1' => '1.1.1'), array('2' => array('2.1' => array('2.1.1' => array('2.1.1.1' => '2.1.1.1.1')))), '3' => array('3.1' => array('3.1.1' => '3.1.1.1')));
$result = Set::countDim($data, true);
// $result == 5

$set = array('1' => array('1.1' => '1.1.1'), array('2' => array('2.1' => array('2.1.1' => array('2.1.1.1' => '2.1.1.1.1')))), '3' => array('3.1' => array('3.1.1' => '3.1.1.1')));
$result = Set::countDim($set, false, 0);
// $result == 2

$result = Set::countDim($set, true);
// $result == 5

diff

array Set::diff ($val1, $val2 = null)

Computes the difference between a Set and an array, two Sets, or two arrays

$a = array(
    0 => array('name' => 'main'),
    1 => array('name' => 'about')
);
$b = array(
    0 => array('name' => 'main'),
    1 => array('name' => 'about'),
    2 => array('name' => 'contact')
);

$result = Set::diff($a, $b);
/* $result now looks like:
    Array
    (
        [2] => Array
            (
                [name] => contact
            )
    )
*/
$result = Set::diff($a, array());
/* $result now looks like:
    Array
    (
        [0] => Array
            (
                [name] => main
            )
        [1] => Array
            (
                [name] => about
            )
    )
*/
$result = Set::diff(array(), $b);
/* $result now looks like:
    Array
    (
        [0] => Array
            (
                [name] => main
            )
        [1] => Array
            (
                [name] => about
            )
        [2] => Array
            (
                [name] => contact
            )
    )
*/

$b = array(
    0 => array('name' => 'me'),
    1 => array('name' => 'about')
);

$result = Set::diff($a, $b);
/* $result now looks like:
    Array
    (
        [0] => Array
            (
                [name] => main
            )
    )
*/

check

boolean/array Set::check ($data, $path = null)

Checks if a particular path is set in an array. If $path is empty, $data will be returned instead of a boolean value.

$set = array(
    'My Index 1' => array('First' => 'The first item')
);
$result = Set::check($set, 'My Index 1.First');
// $result == True
$result = Set::check($set, 'My Index 1');
// $result == True
$result = Set::check($set, array());
// $result == array('My Index 1' => array('First' => 'The first item'))
$set = array(
    'My Index 1' => array('First' =>
        array('Second' =>
            array('Third' =>
                array('Fourth' => 'Heavy. Nesting.'))))
);
$result = Set::check($set, 'My Index 1.First.Second');
// $result == True
$result = Set::check($set, 'My Index 1.First.Second.Third');
// $result == True
$result = Set::check($set, 'My Index 1.First.Second.Third.Fourth');
// $result == True
$result = Set::check($set, 'My Index 1.First.Seconds.Third.Fourth');
// $result == False

remove

array Set::remove ($list, $path = null)

Removes an element from a Set or array as defined by $path.

$a = array(
    'pages'     => array('name' => 'page'),
    'files'     => array('name' => 'files')
);

$result = Set::remove($a, 'files');
/* $result now looks like:
    Array
    (
        [pages] => Array
            (
                [name] => page
            )

    )
*/

classicExtract

array Set::classicExtract ($data, $path = null)

Gets a value from an array or object that is contained in a given path using an array path syntax, i.e.:

  • „{n}.Person.{[a-z]+}“ - Where „{n}“ represents a numeric key, „Person“ represents a string literal

  • „{[a-z]+}“ (i.e. any string literal enclosed in brackets besides {n} and {s}) is interpreted as a regular expression.

Example 1

$a = array(
    array('Article' => array('id' => 1, 'title' => 'Article 1')),
    array('Article' => array('id' => 2, 'title' => 'Article 2')),
    array('Article' => array('id' => 3, 'title' => 'Article 3')));
$result = Set::classicExtract($a, '{n}.Article.id');
/* $result now looks like:
    Array
    (
        [0] => 1
        [1] => 2
        [2] => 3
    )
*/
$result = Set::classicExtract($a, '{n}.Article.title');
/* $result now looks like:
    Array
    (
        [0] => Article 1
        [1] => Article 2
        [2] => Article 3
    )
*/
$result = Set::classicExtract($a, '1.Article.title');
// $result == "Article 2"

$result = Set::classicExtract($a, '3.Article.title');
// $result == null

Example 2

$a = array(
    0 => array('pages' => array('name' => 'page')),
    1 => array('fruites'=> array('name' => 'fruit')),
    'test' => array(array('name' => 'jippi')),
    'dot.test' => array(array('name' => 'jippi'))
);

$result = Set::classicExtract($a, '{n}.{s}.name');
/* $result now looks like:
Array
    (
        [0] => Array
            (
                [0] => page
            )
        [1] => Array
            (
                [0] => fruit
            )
    )
*/
$result = Set::classicExtract($a, '{s}.{n}.name');
/* $result now looks like:
    Array
    (
        [0] => Array
            (
                [0] => jippi
            )
        [1] => Array
            (
                [0] => jippi
            )
    )
*/
$result = Set::classicExtract($a,'{\w+}.{\w+}.name');
/* $result now looks like:
    Array
    (
        [0] => Array
            (
                [pages] => page
            )
        [1] => Array
            (
                [fruites] => fruit
            )
        [test] => Array
            (
                [0] => jippi
            )
        [dot.test] => Array
            (
                [0] => jippi
            )
    )
*/
$result = Set::classicExtract($a,'{\d+}.{\w+}.name');
/* $result now looks like:
    Array
    (
        [0] => Array
            (
                [pages] => page
            )
        [1] => Array
            (
                [fruites] => fruit
            )
    )
*/
$result = Set::classicExtract($a,'{n}.{\w+}.name');
/* $result now looks like:
    Array
    (
        [0] => Array
            (
                [pages] => page
            )
        [1] => Array
            (
                [fruites] => fruit
            )
    )
*/
$result = Set::classicExtract($a,'{s}.{\d+}.name');
/* $result now looks like:
    Array
    (
        [0] => Array
            (
                [0] => jippi
            )
        [1] => Array
            (
                [0] => jippi
            )
    )
*/
$result = Set::classicExtract($a,'{s}');
/* $result now looks like:
    Array
    (

        [0] => Array
            (
                [0] => Array
                    (
                        [name] => jippi
                    )
            )
        [1] => Array
            (
                [0] => Array
                    (
                        [name] => jippi
                    )
            )
    )
*/
$result = Set::classicExtract($a,'{[a-z]}');
/* $result now looks like:
    Array
    (
        [test] => Array
            (
                [0] => Array
                    (
                        [name] => jippi
                    )
            )

        [dot.test] => Array
            (
                [0] => Array
                    (
                        [name] => jippi
                    )
            )
    )
*/
$result = Set::classicExtract($a, '{dot\.test}.{n}');
/* $result now looks like:
    Array
    (
        [dot.test] => Array
            (
                [0] => Array
                    (
                        [name] => jippi
                    )
            )
    )
*/

matches

boolean Set::matches ($conditions, $data=array(), $i = null, $length=null)

Set::matches can be used to see if a single item or a given xpath match certain conditions.

$a = array(
    array('Article' => array('id' => 1, 'title' => 'Article 1')),
    array('Article' => array('id' => 2, 'title' => 'Article 2')),
    array('Article' => array('id' => 3, 'title' => 'Article 3')));
$res=Set::matches(array('id>2'), $a[1]['Article']);
// returns false
$res=Set::matches(array('id>=2'), $a[1]['Article']);
// returns true
$res=Set::matches(array('id>=3'), $a[1]['Article']);
// returns false
$res=Set::matches(array('id<=2'), $a[1]['Article']);
// returns true
$res=Set::matches(array('id<2'), $a[1]['Article']);
// returns false
$res=Set::matches(array('id>1'), $a[1]['Article']);
// returns true
$res=Set::matches(array('id>1', 'id<3', 'id!=0'), $a[1]['Article']);
// returns true
$res=Set::matches(array('3'), null, 3);
// returns true
$res=Set::matches(array('5'), null, 5);
// returns true
$res=Set::matches(array('id'), $a[1]['Article']);
// returns true
$res=Set::matches(array('id', 'title'), $a[1]['Article']);
// returns true
$res=Set::matches(array('non-existant'), $a[1]['Article']);
// returns false
$res=Set::matches('/Article[id=2]', $a);
// returns true
$res=Set::matches('/Article[id=4]', $a);
// returns false
$res=Set::matches(array(), $a);
// returns true

extract

array Set::extract ($path, $data=null, $options=array())

Set::extract verwendet die Standard XPath 2.0 Syntax um Teilergebnisse von „find“ oder „find all“ Abfragen zurückzuliefern. Diese Funktion erlaubt den schnellen Zugriff auf Daten ohne mit Schleifen multidimensionale Arrays oder Baumstrukturen durchlaufen zu müssen.

Wenn $path ein Array ist oder $data leer, wird die Funktion an Set::classicExtract() weiterdeligiert.

// Übliche Verwendung:
$users = $this->User->find("all");
$results = Set::extract('/User/id', $users);
// results liefert:
// array(1,2,3,4,5,...);

Derzeit implementierte Selektoren:

Selektor

Bemerkung

/User/id

Gleichbedeutend mit {n}.User.id

/User[2]/name

Liefert den Namen des 2. Users

/User[id<2]

Liefert alle User mit einer id < 2

/User[id>2][<5]

Liefert alle User mit einer id > 2, aber < 5

/Post/Comment[author_name=john]/../name

Liefert den Namen aller Posts, die mindestens einen Kommentar von „john“ haben

/Posts[title]

Liefert alle Posts, die einen Schlüssel ‚title‘ besitzen

/Comment/.[1]

Liefert den Inhalt des ersten Kommentars

/Comment/.[:last]

Liefert den letzten Kommentar

/Comment/.[:first]

Liefert den ersten Kommentar

/Comment[text=/cakephp/i]

Liefert alle Kommentare, die einen Text beinhlaten, der auf den regulären Ausdruck /cakephp/i matcht.

/Comment/@*

Liefert die Schlüssel Bezeichner aller Kommentare

Derzeit werden nur absolute Pfade, die mit einem einzelnen ‚/ starten unterstützt. Bitte melde alle Bugs, die Du findest. Auch Vorschläge für Verbesserungen sind immer willkommen.

Um mehr über Set::extract() zu lernen schau Dir die Test Funktion testExtract() in /cake/tests/cases/libs/set.test.php an.

format

array Set::format ($data, $format, $keys)

Returns a series of values extracted from an array, formatted in a format string.

$data = array(
    array('Person' => array('first_name' => 'Nate', 'last_name' => 'Abele', 'city' => 'Boston', 'state' => 'MA', 'something' => '42')),
    array('Person' => array('first_name' => 'Larry', 'last_name' => 'Masters', 'city' => 'Boondock', 'state' => 'TN', 'something' => '{0}')),
    array('Person' => array('first_name' => 'Garrett', 'last_name' => 'Woodworth', 'city' => 'Venice Beach', 'state' => 'CA', 'something' => '{1}')));

$res = Set::format($data, '{1}, {0}', array('{n}.Person.first_name', '{n}.Person.last_name'));
/*
Array
(
    [0] => Abele, Nate
    [1] => Masters, Larry
    [2] => Woodworth, Garrett
)
*/

$res = Set::format($data, '{0}, {1}', array('{n}.Person.city', '{n}.Person.state'));
/*
Array
(
    [0] => Boston, MA
    [1] => Boondock, TN
    [2] => Venice Beach, CA
)
*/
$res = Set::format($data, '{{0}, {1}}', array('{n}.Person.city', '{n}.Person.state'));
/*
Array
(
    [0] => {Boston, MA}
    [1] => {Boondock, TN}
    [2] => {Venice Beach, CA}
)
*/
$res = Set::format($data, '{%2$d, %1$s}', array('{n}.Person.something', '{n}.Person.something'));
/*
Array
(
    [0] => {42, 42}
    [1] => {0, {0}}
    [2] => {0, {1}}
)
*/
$res = Set::format($data, '%2$d, %1$s', array('{n}.Person.first_name', '{n}.Person.something'));
/*
Array
(
    [0] => 42, Nate
    [1] => 0, Larry
    [2] => 0, Garrett
)
*/
$res = Set::format($data, '%1$s, %2$d', array('{n}.Person.first_name', '{n}.Person.something'));
/*
Array
(
    [0] => Nate, 42
    [1] => Larry, 0
    [2] => Garrett, 0
)
*/

enum

string Set::enum ($select, $list=null)

The enum method works well when using html select elements. It returns a value from an array list if the key exists.

If a comma separated $list is passed arrays are numeric with the key of the first being 0 $list = ‚no, yes‘ would translate to $list = array(0 => ‚no‘, 1 => ‚yes‘);

If an array is used, keys can be strings example: array(‚no‘ => 0, ‚yes‘ => 1);

$list defaults to 0 = no 1 = yes if param is not passed

$res = Set::enum(1, 'one, two');
// $res is 'two'

$res = Set::enum('no', array('no' => 0, 'yes' => 1));
// $res is 0

$res = Set::enum('first', array('first' => 'one', 'second' => 'two'));
// $res is 'one'

numeric

boolean Set::numeric ($array=null)

Checks to see if all the values in the array are numeric

$data = array('one');
$res = Set::numeric(array_keys($data));

// $res is true

$data = array(1 => 'one');
$res = Set::numeric($data);

// $res is false

$data = array('one');
$res = Set::numeric($data);

// $res is false

$data = array('one' => 'two');
$res = Set::numeric($data);

// $res is false

$data = array('one' => 1);
$res = Set::numeric($data);

// $res is true

$data = array(0);
$res = Set::numeric($data);

// $res is true

$data = array('one', 'two', 'three', 'four', 'five');
$res = Set::numeric(array_keys($data));

// $res is true

$data = array(1 => 'one', 2 => 'two', 3 => 'three', 4 => 'four', 5 => 'five');
$res = Set::numeric(array_keys($data));

// $res is true

$data = array('1' => 'one', 2 => 'two', 3 => 'three', 4 => 'four', 5 => 'five');
$res = Set::numeric(array_keys($data));

// $res is true

$data = array('one', 2 => 'two', 3 => 'three', 4 => 'four', 'a' => 'five');
$res = Set::numeric(array_keys($data));

// $res is false

map

object Set::map ($class = 'stdClass', $tmp = 'stdClass')

This method Maps the contents of the Set object to an object hierarchy while maintaining numeric keys as arrays of objects.

Basically, the map function turns array items into initialized class objects. By default it turns an array into a stdClass Object, however you can map values into any type of class. Example: Set::map($array_of_values, ‚nameOfYourClass‘);

$data = array(
    array(
        "IndexedPage" => array(
            "id" => 1,
            "url" => 'http://blah.com/',
            'hash' => '68a9f053b19526d08e36c6a9ad150737933816a5',
            'get_vars' => '',
            'redirect' => '',
            'created' => "1195055503",
            'updated' => "1195055503",
        )
    ),
    array(
        "IndexedPage" => array(
            "id" => 2,
            "url" => 'http://blah.com/',
            'hash' => '68a9f053b19526d08e36c6a9ad150737933816a5',
            'get_vars' => '',
            'redirect' => '',
            'created' => "1195055503",
            'updated' => "1195055503",
        ),
    )
);
$mapped = Set::map($data);

/* $mapped now looks like:

    Array
    (
        [0] => stdClass Object
            (
                [_name_] => IndexedPage
                [id] => 1
                [url] => http://blah.com/
                [hash] => 68a9f053b19526d08e36c6a9ad150737933816a5
                [get_vars] =>
                [redirect] =>
                [created] => 1195055503
                [updated] => 1195055503
            )

        [1] => stdClass Object
            (
                [_name_] => IndexedPage
                [id] => 2
                [url] => http://blah.com/
                [hash] => 68a9f053b19526d08e36c6a9ad150737933816a5
                [get_vars] =>
                [redirect] =>
                [created] => 1195055503
                [updated] => 1195055503
            )

    )

*/

Using Set::map() with a custom class for second parameter:

class MyClass {
    function sayHi() {
        echo 'Hi!';
    }
}

$mapped = Set::map($data, 'MyClass');
//Now you can access all the properties as in the example above,
//but also you can call MyClass's methods
$mapped->[0]->sayHi();

pushDiff

array Set::pushDiff ($array1, $array2)

This function merges two arrays and pushes the differences in array2 to the bottom of the resultant array.

Example 1

$array1 = array('ModelOne' => array('id'=>1001, 'field_one'=>'a1.m1.f1', 'field_two'=>'a1.m1.f2'));
$array2 = array('ModelOne' => array('id'=>1003, 'field_one'=>'a3.m1.f1', 'field_two'=>'a3.m1.f2', 'field_three'=>'a3.m1.f3'));
$res = Set::pushDiff($array1, $array2);

/* $res now looks like:
    Array
    (
        [ModelOne] => Array
            (
                [id] => 1001
                [field_one] => a1.m1.f1
                [field_two] => a1.m1.f2
                [field_three] => a3.m1.f3
            )
    )
*/

Example 2

$array1 = array("a"=>"b", 1 => 20938, "c"=>"string");
$array2 = array("b"=>"b", 3 => 238, "c"=>"string", array("extra_field"));
$res = Set::pushDiff($array1, $array2);
/* $res now looks like:
    Array
    (
        [a] => b
        [1] => 20938
        [c] => string
        [b] => b
        [3] => 238
        [4] => Array
            (
                [0] => extra_field
            )
    )
*/

filter

array Set::filter ($var, $isArray=null)

Filters empty elements out of a route array, excluding ‚0‘.

$res = Set::filter(array('0', false, true, 0, array('one thing', 'I can tell you', 'is you got to be', false)));

/* $res now looks like:
    Array (
        [0] => 0
        [2] => 1
        [3] => 0
        [4] => Array
            (
                [0] => one thing
                [1] => I can tell you
                [2] => is you got to be
                [3] =>
            )
    )
*/

merge

array Set::merge ($arr1, $arr2=null)

This function can be thought of as a hybrid between PHP’s array_merge and array_merge_recursive. The difference to the two is that if an array key contains another array then the function behaves recursive (unlike array_merge) but does not do if for keys containing strings (unlike array_merge_recursive). See the unit test for more information.

This function will work with an unlimited amount of arguments and typecasts non-array parameters into arrays.

$arry1 = array(
    array(
        'id' => '48c2570e-dfa8-4c32-a35e-0d71cbdd56cb',
        'name' => 'mysql raleigh-workshop-08 < 2008-09-05.sql ',
        'description' => 'Importing an sql dump'
    ),
    array(
        'id' => '48c257a8-cf7c-4af2-ac2f-114ecbdd56cb',
        'name' => 'pbpaste | grep -i Unpaid | pbcopy',
        'description' => 'Remove all lines that say "Unpaid".',
    )
);
$arry2 = 4;
$arry3 = array(0=>"test array", "cats"=>"dogs", "people" => 1267);
$arry4 = array("cats"=>"felines", "dog"=>"angry");
$res = Set::merge($arry1, $arry2, $arry3, $arry4);

/* $res now looks like:
Array
(
    [0] => Array
        (
            [id] => 48c2570e-dfa8-4c32-a35e-0d71cbdd56cb
            [name] => mysql raleigh-workshop-08 < 2008-09-05.sql
            [description] => Importing an sql dump
        )

    [1] => Array
        (
            [id] => 48c257a8-cf7c-4af2-ac2f-114ecbdd56cb
            [name] => pbpaste | grep -i Unpaid | pbcopy
            [description] => Remove all lines that say "Unpaid".
        )

    [2] => 4
    [3] => test array
    [cats] => felines
    [people] => 1267
    [dog] => angry
)
*/

contains

boolean Set::contains ($val1, $val2 = null)

Determines if one Set or array contains the exact keys and values of another.

$a = array(
    0 => array('name' => 'main'),
    1 => array('name' => 'about')
);
$b = array(
    0 => array('name' => 'main'),
    1 => array('name' => 'about'),
    2 => array('name' => 'contact'),
    'a' => 'b'
);

$result = Set::contains($a, $a);
// True
$result = Set::contains($a, $b);
// False
$result = Set::contains($b, $a);
// True