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<?php |
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namespace TRex\Collection; |
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trait CollectionFilterTrait |
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{ |
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/** |
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* @param callable|null $filter |
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* @param int $flag (only for php version >= 5.6) |
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* @return $this |
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*/ |
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public function filter(callable $filter = null, $flag = 0) |
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{ |
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if (defined('HHVM_VERSION')) { |
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if (version_compare(HHVM_VERSION, '3.8.1', '>=')) { |
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return new $this(array_filter((array)$this, $filter, $flag)); |
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} |
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} else { |
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if (version_compare(phpversion(), '5.6.0', '>=')) { |
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return new $this(array_filter((array)$this, $filter, $flag)); |
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} |
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} |
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return new $this(array_filter((array)$this, $filter)); |
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} |
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/** |
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* Executes the callback for every value. |
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* Returns a collection with the result of each callback call. |
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* If the callback returns nothing, the returned collection will contain same values as the original ones. |
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* |
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* @param callable $callback |
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* @param array $args |
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* @return $this |
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*/ |
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public function each(callable $callback, array $args = []) |
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{ |
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return new $this(array_map( |
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function ($value) use ($callback, $args) { |
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return call_user_func($callback, $value, $args) ?: $value; |
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}, |
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(array)$this |
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)); |
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} |
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/** |
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* Executes the callback for every value. |
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* Returns false if the callback returns once a falsy value. |
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* |
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* @param callable $callback |
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* @return bool |
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*/ |
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public function assert(callable $callback) |
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{ |
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foreach ($this as $key => $value) { |
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if (!call_user_func($callback, $value)) { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* Extracts the sequence of elements. |
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* Starts at index $startIndex and stop after $length keys. |
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* |
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* @param int $startIndex |
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* @param int $length |
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* @param bool $areKeysPreserved |
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* @return mixed |
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*/ |
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public function extract($startIndex, $length = 0, $areKeysPreserved = true) |
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{ |
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$collection = (array)$this; |
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$length = $length ?: count($collection); |
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return new $this(array_slice($collection, $startIndex, $length, $areKeysPreserved)); |
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} |
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/** |
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* @param int $length |
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* @return $this |
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*/ |
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public function rand($length = 1) |
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{ |
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$keys = (array)array_rand((array)$this, $length); |
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$result = new $this; |
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foreach ($this as $key => $value) { |
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if (in_array($key, $keys)) { |
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$result[$key] = $value; |
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} |
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} |
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return $result; |
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} |
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} |
Raphhh /
trex-collection
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This check compares the return type specified in the
@returnannotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch.