PHP code example of aimeos / map

1. Go to this page and download the library: Download aimeos/map library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

aimeos / map example snippets


$list = [['id' => 'one', 'value' => 'value1'], ['id' => 'two', 'value' => 'value2'], null];
$list[] = ['id' => 'three', 'value' => 'value3'];    // add element
unset( $list[0] );                                   // remove element
$list = array_filter( $list );                       // remove empty values
sort( $list );                                       // sort elements
$pairs = array_column( $list, 'value', 'id' );       // create ['three' => 'value3']
$value = reset( $pairs ) ?: null;                    // return first value


$list = [['id' => 'one', 'value' => 'value1'], ['id' => 'two', 'value' => 'value2'], null];
$value = map( $list )                                // create Map
    ->push( ['id' => 'three', 'value' => 'value3'] ) // add element
    ->remove( 0 )                                    // remove element
    ->filter()                                       // remove empty values
    ->sort()                                         // sort elements
    ->col( 'value', 'id' )                           // create ['three' => 'value3']
    ->first();                                       // return first value


$map[] = ['id' => 'three', 'value' => 'value3'];
$value = $map[0];
count( $map );
foreach( $map as $key => value );


$map->each( function( $val, $key ) {
	echo $key . ': ' . $val;
} );


// MyClass implements setStatus() (returning $this) and getCode() (initialized by constructor)

$map = Map::from( ['a' => new MyClass( 'x' ), 'b' => new MyClass( 'y' )] );
$map->setStatus( 1 )->getCode()->toArray();


['a' => MyClass(), 'b' => MyClass()]


['a' => 'x', 'b' => 'y']


function is_map( $var ) : bool


is_map( new Map() );
// true

is_map( [] );
// false


function map( $elements = [] ) : \Aimeos\Map


// array
map( [] );

// null
map( null );

// scalar
map( 'a' );

// object
map( new \stdClass() );

// map object
map( new Map() );

// iterable object
map( new ArrayObject() );

// closure evaluated lazily
map( function() {
    return [];
} );


public function __construct( $elements = [] )


// array
new Map( [] );

// null
new Map( null );

// scalar
new Map( 'a' );

// object
new Map( new \stdClass() );

// map object
new Map( new Map() );

// iterable object
new Map( new ArrayObject() );

// closure evaluated lazily
new Map( function() {
    return [];
} );


public function __call( string $name, array $params )


Map::method( 'case', function( $case = CASE_LOWER ) {
    return new self( array_change_key_case( $this->items, $case ) );
} );

Map::from( ['a' => 'bar'] )->case( CASE_UPPER );
// ['A' => 'bar']


$item = new MyClass(); // with method setStatus() (returning $this) and getCode() implemented
Map::from( [$item, $item] )->setStatus( 1 )->getCode()->toArray();


public static function __callStatic( string $name, array $params )


Map::method( 'foo', function( $arg1, $arg2 ) {} );
Map::foo( $arg1, $arg2 );


public function after( $value ) : self


Map::from( [0 => 'b', 1 => 'a'] )->after( 'b' );
// [1 => 'a']

Map::from( ['a' => 1, 'b' => 0] )->after( 1 );
// ['b' => 0]

Map::from( [0 => 'b', 1 => 'a'] )->after( 'c' );
// []

Map::from( ['a', 'c', 'b'] )->after( function( $item, $key ) {
    return $item >= 'c';
} );
// [2 => 'b']


public function all() : array


Map::from( ['a'] )->all();
// ['a']


public function arsort( int $options = SORT_REGULAR ) : self


Map::from( ['b' => 0, 'a' => 1] )->arsort();
// ['a' => 1, 'b' => 0]

Map::from( ['a', 'b'] )->arsort();
// ['b', 'a']

Map::from( [0 => 'C', 1 => 'b'] )->arsort();
// [1 => 'b', 0 => 'C']

Map::from( [0 => 'C', 1 => 'b'] )->arsort( SORT_STRING|SORT_FLAG_CASE );
// [0 => 'C', 1 => 'b'] because 'C' -> 'c' and 'c' > 'b'


public function asort( int $options = SORT_REGULAR ) : self


Map::from( ['a' => 1, 'b' => 0] )->asort();
// ['b' => 0, 'a' => 1]

Map::from( [0 => 'b', 1 => 'a'] )->asort();
// [1 => 'a', 0 => 'b']

Map::from( [0 => 'C', 1 => 'b'] )->asort();
// [0 => 'C', 1 => 'b'] because 'C' < 'b'

Map::from( [0 => 'C', 1 => 'b'] )->arsort( SORT_STRING|SORT_FLAG_CASE );
// [1 => 'b', 0 => 'C'] because 'C' -> 'c' and 'c' > 'b'


public function at( int $pos )


Map::from( [1, 3, 5] )->at( 0 );
// 1

Map::from( [1, 3, 5] )->at( 1 );
// 3

Map::from( [1, 3, 5] )->at( -1 );
// 5

Map::from( [1, 3, 5] )->at( 3 );
// NULL


public function avg( string $key = null ) : float


Map::from( [1, 3, 5] )->avg();
// 3

Map::from( [1, null, 5] )->avg();
// 2

Map::from( [1, 'sum', 5] )->avg();
// 2

Map::from( [['p' => 30], ['p' => 50], ['p' => 10]] )->avg( 'p' );
// 30

Map::from( [['i' => ['p' => 30]], ['i' => ['p' => 50]]] )->avg( 'i/p' );
// 40


public function before( $value ) : self


Map::from( ['a' => 1, 'b' => 0] )->before( 0 );
// ['a' => 1]

Map::from( [0 => 'b', 1 => 'a'] )->before( 'a' );
// [0 => 'b']

Map::from( [0 => 'b', 1 => 'a'] )->before( 'c' );
// []

Map::from( ['a', 'c', 'b'] )->before( function( $item, $key ) {
    return $key >= 1;
} );
// [0 => 'a']


public function bool( $key, $default = false ) : bool


Map::from( ['a' => true] )->bool( 'a' );
// true

Map::from( ['a' => '1'] )->bool( 'a' );
// true (casted to boolean)

Map::from( ['a' => 1.1] )->bool( 'a' );
// true (casted to boolean)

Map::from( ['a' => '10'] )->bool( 'a' );
// true (casted to boolean)

Map::from( ['a' => 'abc'] )->bool( 'a' );
// true (casted to boolean)

Map::from( ['a' => ['b' => ['c' => true]]] )->bool( 'a/b/c' );
// true

Map::from( [] )->bool( 'c', function() { return rand( 1, 2 ); } );
// true (value returned by closure is casted to boolean)

Map::from( [] )->bool( 'a', true );
// true (default value used)

Map::from( [] )->bool( 'a' );
// false

Map::from( ['b' => ''] )->bool( 'b' );
// false (casted to boolean)

Map::from( ['b' => null] )->bool( 'b' );
// false (null is not scalar)

Map::from( ['b' => [true]] )->bool( 'b' );
// false (arrays are not scalar)

Map::from( ['b' => '#resource'] )->bool( 'b' );
// false (resources are not scalar)

Map::from( ['b' => new \stdClass] )->bool( 'b' );
// false (objects are not scalar)

Map::from( [] )->bool( 'c', new \Exception( 'error' ) );
// throws exception


public function call( string $name, array $params = [] ) : self


$item = new MyClass( ['myprop' => 'val'] ); // implements methods get() and toArray()

Map::from( [$item, $item] )->call( 'get', ['myprop'] );
// ['val', 'val']

Map::from( [$item, $item] )->call( 'toArray' );
// [['myprop' => 'val'], ['myprop' => 'val']]


public function cast( string $type = 'string' ) : self


Map::from( [true, 1, 1.0, 'yes'] )->cast();
// ['1', '1', '1.0', 'yes']

Map::from( [true, 1, 1.0, 'yes'] )->cast( 'bool' );
// [true, true, true, true]

Map::from( [true, 1, 1.0, 'yes'] )->cast( 'int' );
// [1, 1, 1, 0]

Map::from( [true, 1, 1.0, 'yes'] )->cast( 'float' );
// [1.0, 1.0, 1.0, 0.0]

Map::from( [new stdClass, new stdClass] )->cast( 'array' );
// [[], []]

Map::from( [[], []] )->cast( 'object' );
// [new stdClass, new stdClass]


public function chunk( int $size, bool $preserve = false ) : self


Map::from( [0, 1, 2, 3, 4] )->chunk( 3 );
// [[0, 1, 2], [3, 4]]

Map::from( ['a' => 0, 'b' => 1, 'c' => 2] )->chunk( 2 );
// [['a' => 0, 'b' => 1], ['c' => 2]]


public function clear() : self


Map::from( [0, 1] )->clear();
// internal : []


public function clone() : self


Map::from( [new \stdClass, new \stdClass] )->clone();
// [new \stdClass, new \stdClass]


public function col( string $valuecol = null, string $indexcol = null ) : self


Map::from( [['id' => 'i1', 'val' => 'v1'], ['id' => 'i2', 'val' => 'v2']] )->col( 'val' );
// ['v1', 'v2']

Map::from( [['id' => 'i1', 'val' => 'v1'], ['id' => 'i2', 'val' => 'v2']] )->col( 'val', 'id' );
// ['i1' => 'v1', 'i2' => 'v2']

Map::from( [['id' => 'i1', 'val' => 'v1'], ['id' => 'i2', 'val' => 'v2']] )->col( null, 'id' );
// ['i1' => ['id' => 'i1', 'val' => 'v1'], 'i2' => ['id' => 'i2', 'val' => 'v2']]

Map::from( [['id' => 'ix', 'val' => 'v1'], ['id' => 'ix', 'val' => 'v2']] )->col( null, 'id' );
// ['ix' => ['id' => 'ix', 'val' => 'v2']]

Map::from( [['foo' => ['bar' => 'one', 'baz' => 'two']]] )->col( 'foo/baz', 'foo/bar' );
// ['one' => 'two']

Map::from( [['foo' => ['bar' => 'one']]] )->col( 'foo/baz', 'foo/bar' );
// ['one' => null]

Map::from( [['foo' => ['baz' => 'two']]] )->col( 'foo/baz', 'foo/bar' );
// ['two']


public function collapse( int $depth = null ) : self


Map::from( [0 => ['a' => 0, 'b' => 1], 1 => ['c' => 2, 'd' => 3]] )->collapse();
// ['a' => 0, 'b' => 1, 'c' => 2, 'd' => 3]

Map::from( [0 => ['a' => 0, 'b' => 1], 1 => ['a' => 2]] )->collapse();
// ['a' => 2, 'b' => 1]

Map::from( [0 => [0 => 0, 1 => 1], 1 => [0 => ['a' => 2, 0 => 3], 1 => 4]] )->collapse();
// [0 => 3, 1 => 4, 'a' => 2]

Map::from( [0 => [0 => 0, 'a' => 1], 1 => [0 => ['b' => 2, 0 => 3], 1 => 4]] )->collapse( 1 );
// [0 => ['b' => 2, 0 => 3], 1 => 4, 'a' => 1]

Map::from( [0 => [0 => 0, 'a' => 1], 1 => Map::from( [0 => ['b' => 2, 0 => 3], 1 => 4] )] )->collapse();
// [0 => 3, 'a' => 1, 'b' => 2, 1 => 4]


public function combine( iterable $values ) : self


Map::from( ['name', 'age'] )->combine( ['Tom', 29] );
// ['name' => 'Tom', 'age' => 29]


public function compare( string $value, bool $case = true ) : bool


Map::from( ['foo', 'bar'] )->compare( 'foo' );
// true

Map::from( ['foo', 'bar'] )->compare( 'Foo', false );
// true (case insensitive)

Map::from( [123, 12.3] )->compare( '12.3' );
// true

Map::from( [false, true] )->compare( '1' );
// true

Map::from( ['foo', 'bar'] )->compare( 'Foo' );
// false (case sensitive)

Map::from( ['foo', 'bar'] )->compare( 'baz' );
// false

Map::from( [new \stdClass(), 'bar'] )->compare( 'foo' );
// false


public function concat( iterable $elements ) : self


Map::from( ['foo'] )->concat( ['bar'] );
// ['foo', 'bar']

Map::from( ['foo'] )->concat( new Map( ['bar' => 'baz'] ) );
// ['foo', 'baz']


public function contains( $key, string $operator = null, $value = null ) : bool


Map::from( ['a', 'b'] )->contains( 'a' );
// true

Map::from( ['a', 'b'] )->contains( ['a', 'c'] );
// true

Map::from( ['a', 'b'] )->contains( function( $item, $key ) {
    return $item === 'a'
} );
// true

Map::from( [['type' => 'name']] )->contains( 'type', 'name' );
// true

Map::from( [['type' => 'name']] )->contains( 'type', '!=', 'name' );
// false


public function copy() : self


$m = Map::from( ['foo', 'bar'] );

$m2 = $m->copy();
// internal: ['foo', 'bar'] both two maps


public function count() : int


Map::from( ['foo', 'bar'] )->count();
// 2


public function countBy( callable $callback = null ) : self


Map::from( [1, 'foo', 2, 'foo', 1] )->countBy();
// [1 => 2, 'foo' => 2, 2 => 1]

Map::from( [1.11, 3.33, 3.33, 9.99] )->countBy();
// ['1.11' => 1, '3.33' => 2, '9.99' => 1]

Map::from( ['[email protected]', '[email protected]', '[email protected]'] )->countBy( function( $email ) {
    return substr( strrchr( $email, '@' ), 1 );
} );
// ['gmail.com' => 2, 'yahoo.com' => 1]


public function dd( callable $callback = null ) : void


Map::from( ['a' => 'foo', 'b' => 'bar'] )->sort()->dd()->first();
/*
Array
(
    [0] => bar
    [1] => foo
)
*/


public static function delimiter( ?string $char = null ) : string


Map::delimiter( '.' );
// '/'

Map::from( ['foo' => ['bar' => 'baz']] )->get( 'foo.bar' );
// 'baz'


public function diff( iterable $elements, callable $callback = null ) : self


Map::from( ['a' => 'foo', 'b' => 'bar'] )->diff( ['bar'] );
// ['a' => 'foo']


Map::from( [0 => 'a'] )->diff( [0 => 'A'], 'strcasecmp' );
// []

Map::from( ['b' => 'a'] )->diff( ['B' => 'A'], 'strcasecmp' );
// []

Map::from( ['b' => 'a'] )->diff( ['c' => 'A'], function( $valA, $valB ) {
    return strtolower( $valA ) <=> strtolower( $valB );
} );
// []


public function diffAssoc( iterable $elements, callable $callback = null ) : self


Map::from( ['a' => 'foo', 'b' => 'bar'] )->diffAssoc( new Map( ['foo', 'b' => 'bar'] ) );
// ['a' => 'foo']


Map::from( [0 => 'a'] )->diffAssoc( [0 => 'A'], 'strcasecmp' );
// []

Map::from( ['b' => 'a'] )->diffAssoc( ['B' => 'A'], 'strcasecmp' );
// []

Map::from( ['b' => 'a'] )->diffAssoc( ['c' => 'A'], function( $valA, $valB ) {
    return strtolower( $valA ) <=> strtolower( $valB );
} );
// ['b' => 'a']


public function diffKeys( iterable $elements, callable $callback = null ) : self


Map::from( ['a' => 'foo', 'b' => 'bar'] )->diffKeys( new Map( ['foo', 'b' => 'baz'] ) );
// ['a' => 'foo']


Map::from( [0 => 'a'] )->diffKeys( [0 => 'A'], 'strcasecmp' );
// []

Map::from( ['b' => 'a'] )->diffKeys( ['B' => 'X'], 'strcasecmp' );
// []

Map::from( ['b' => 'a'] )->diffKeys( ['c' => 'a'], function( $keyA, $keyB ) {
    return strtolower( $keyA ) <=> strtolower( $keyB );
} );
// ['b' => 'a']


public function dump( callable $callback = null ) : self


Map::from( ['a' => 'foo', 'b' => 'bar'] )->dump()->asort()->dump( 'var_dump' );
/*
Array
(
    [a] => foo
    [b] => bar
)

array(1) {
  ["b"]=>
  string(3) "bar"
  ["a"]=>
  string(3) "foo"
}
*/


public function duplicates( string $col = null ) : self


Map::from( [1, 2, '1', 3] )->duplicates()
// [2 => '1']

Map::from( [['p' => '1'], ['p' => 1], ['p' => 2]] )->duplicates( 'p' )
// [1 => ['p' => 1]]

Map::from( [['i' => ['p' => '1']], ['i' => ['p' => 1]]] )->duplicates( 'i/p' )
// [1 => ['i' => ['p' => '1']]]


public function each( \Closure $callback ) : self


$result = [];
Map::from( [0 => 'a', 1 => 'b'] )->each( function( $value, $key ) use ( &$result ) {
    $result[$key] = strtoupper( $value );
    return false;
} );
// $result = [0 => 'A']


public function empty() : bool


Map::from( [] )->empty();
// true

Map::from( ['a'] )->empty();
// false


public function equals( iterable $elements ) : bool


(string) $item1 === (string) $item2


Map::from( ['a'] )->equals( ['a', 'b'] );
// false

Map::from( ['a', 'b'] )->equals( ['b'] );
// false

Map::from( ['a', 'b'] )->equals( ['b', 'a'] );
// true


public function every( \Closure $callback ) : bool


Map::from( [0 => 'a', 1 => 'b'] )->every( function( $value, $key ) {
    return is_string( $value );
} );
// true

Map::from( [0 => 'a', 1 => 100] )->every( function( $value, $key ) {
    return is_string( $value );
} );
// false


public function except( $keys ) : self


Map::from( ['a' => 1, 'b' => 2, 'c' => 3] )->except( 'b' );
// ['a' => 1, 'c' => 3]

Map::from( [1 => 'a', 2 => 'b', 3 => 'c'] )->except( [1, 3] );
// [2 => 'b']


public static function explode( string $delimiter , string $string , int $limit = PHP_INT_MAX ) : self


Map::explode( ',', 'a,b,c' );
// ['a', 'b', 'c']

Map::explode( '<-->', 'a a<-->b b<-->c c' );
// ['a a', 'b b', 'c c']

Map::explode( '', 'string' );
// ['s', 't', 'r', 'i', 'n', 'g']

Map::explode( '|', 'a|b|c', 2 );
// ['a', 'b|c']

Map::explode( '', 'string', 2 );
// ['s', 't', 'ring']

Map::explode( '|', 'a|b|c|d', -2 );
// ['a', 'b']

Map::explode( '', 'string', -3 );
// ['s', 't', 'r']


public function filter( callable $callback = null ) : self


(bool) $value === false


Map::from( [null, 0, 1, '', '0', 'a'] )->filter();
// [1, 'a']

Map::from( [2 => 'a', 6 => 'b', 13 => 'm', 30 => 'z'] )->filter( function( $value, $key ) {
    return $key < 10 && $value < 'n';
} );
// ['a', 'b']


public function find( \Closure $callback, $default = null, bool $reverse = false )


Map::from( ['a', 'c', 'e'] )->find( function( $value, $key ) {
    return $value >= 'b';
} );
// 'c'

Map::from( ['a', 'c', 'e'] )->find( function( $value, $key ) {
    return $value >= 'b';
}, null, true );
// 'e' because $reverse = true

Map::from( [] )->find( function( $value, $key ) {
    return $value >= 'b';
}, 'none' );
// 'none'

Map::from( [] )->find( function( $value, $key ) {
    return $value >= 'b';
}, new \Exception( 'error' ) );
// throws \Exception


public function first( $default = null )


Map::from( ['a', 'b'] )->first();
// 'a'

Map::from( [] )->first( 'x' );
// 'x'

Map::from( [] )->first( new \Exception( 'error' ) );
// throws \Exception

Map::from( [] )->first( function() { return rand(); } );
// random integer


public function firstKey()

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public function flat( int $depth = null ) : self

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public function flip() : self

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public function float( $key, $default = 0.0 ) : float

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public static function from( $elements = [] ) : self

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public static function fromJson( string $json, int $options = JSON_BIGINT_AS_STRING ) : self

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JSON_BIGINT_AS_STRING|JSON_INVALID_UTF8_IGNORE

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public function get( $key, $default = null )

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public function getIterator() : \ArrayIterator

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foreach( Map::from( ['a', 'b'] ) as $value ) {
    // ...
}

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public function grep( string $pattern, int $flags = 0 ) : self

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public function groupBy( $key ) : self

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public function has( $key ) : bool

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public function if( $condition, \Closure $then, \Closure $else = null ) : self

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Map::from( ['a' => 1, 'b' => 0] )->if(
    'a' == 'b',
    function( Map $_ ) { echo "then"; }
);
// no output

Map::from( ['a' => 1, 'b' => 0] )->if(
    function( Map $map ) { return $map->has( 'a' ); },
    function( Map $_ ) { echo "then"; },
    function( Map $_ ) { echo "else"; }
);
// then

Map::from( ['a' => 1, 'b' => 0] )->if(
    fn( Map $map ) => $map->has( 'c' ),
    function( Map $_ ) { echo "then"; },
    function( Map $_ ) { echo "else"; }
);
// else

Map::from( ['a', 'b'] )->if( true, function( $map ) {
    return $map->push( 'c' );
} );
// ['a', 'b', 'c']

Map::from( ['a', 'b'] )->if( false, null, function( $map ) {
  return $map->pop();
} );
// ['b']

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public function ifAny( \Closure $then = null, \Closure $else = null ) : self

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public function ifEmpty( \Closure $then = null, \Closure $else = null ) : self

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public function index( $value ) : ?int

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public function insertAfter( $element, $value ) : self

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public function insertAt( int $pos, $element, $key = null ) : self

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public function insertBefore( $element, $value ) : self

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public function inString( $value, bool $case = true ) : bool

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public function int( $key, $default = 0 ) : int

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public function intersect( iterable $elements, callable $callback = null ) : self

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public function intersectAssoc( iterable $elements, callable $callback = null ) : self

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public function intersectKeys( iterable $elements, callable $callback = null ) : self

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public function isEmpty() : bool

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public function isObject() : bool

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public function isNumeric() : bool

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public function isScalar() : bool

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public function join( $glue = '' ) : string

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public function jsonSerialize()

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public function keys() : self

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public function krsort( int $options = SORT_REGULAR ) : self

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public function ksort( int $options = SORT_REGULAR ) : self

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public function last( $default = null )

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public function lastKey()

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public function ltrim( string $chars = " \n\r\t\v\x00" ) : self

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public function map( callable $callback ) : self

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Map::from( ['a' => 2, 'b' => 4] )->map( function( $value, $key ) {
    return $value * 2;
} );
// ['a' => 4, 'b' => 8]

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public function max( string $col = null )

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public function merge( iterable $elements, bool $recursive = false ) : self

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Map::method( 'foo', function( $arg1, $arg2 ) {
    return array_merge( $this->elements, [$arg1, $arg2] );
} );

Map::method( 'foo' );
// registered closure

Map::method( 'foo2' );
// NULL

Map::from( ['bar'] )->foo( 'foo', 'baz' );
// ['bar', 'foo', 'baz']



Map::foo( 'foo', 'baz' );
// error because `$this->elements` isn't available

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Map::method( 'bar', function( $arg1, $arg2 ) {
    return new static( [$arg1, $arg2] );
} );

Map::foo( 'foo', 'baz' );
// ['foo', 'baz']

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public function min( string $col = null )

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public function nth( int $step, int $offset = 0 ) : self

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public function offsetExists( $key )

php
$map = Map::from( ['a' => 1, 'b' => 3, 'c' => null] );

isset( $map['b'] );
// true

isset( $map['c'] );
// false

isset( $map['d'] );
// false