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<?php if (! function_exists('array_column')) { function array_column($array, $column_key, $idx=NULL) { $result = array(); foreach ($array as $i => $item) { $result[$idx ? $item[$idx]: $i] = $item[$column_key]; } return $result; } } echo implode(', ', array_column(array(range(0, 4), range(0, 6), range(0, 5)), 2)), "\n"; class Artist implements ArrayAccess { public $artist_name; function __construct($name) { $this->artist_name = $name; } function offsetGet($name) { return $this->$name; } function offsetExists($name) { return isset($this->$name); } function offsetSet($name, $value) { $this->$name = $value; } function offsetUnset($name) { unset($this->$name); } } $artists = array( new Artist('Dali'), new Artist('Picasso'), new Artist('Titian'), ); var_dump(array_column($artists, 'artist_name')); /*****/
Output for git.master, git.master_jit, rfc.property-hooks
2, 2, 2 Deprecated: Return type of Artist::offsetExists($name) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Ua1SU on line 22 Deprecated: Return type of Artist::offsetGet($name) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Ua1SU on line 19 Deprecated: Return type of Artist::offsetSet($name, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Ua1SU on line 25 Deprecated: Return type of Artist::offsetUnset($name) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Ua1SU on line 28 array(3) { [0]=> string(4) "Dali" [1]=> string(7) "Picasso" [2]=> string(6) "Titian" }

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