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<?php |
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/** |
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* Array helper |
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* |
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* @author Kachit |
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* @package Kachit\Helper |
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*/ |
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namespace Kachit\Helper; |
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class ArrayHelper |
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{ |
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const INSERT_TYPE_AFTER = 'after'; |
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const INSERT_TYPE_BEFORE = 'before'; |
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/** |
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* @var array |
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*/ |
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protected $insertTypes = [ |
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self::INSERT_TYPE_AFTER, |
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self::INSERT_TYPE_BEFORE, |
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]; |
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/** |
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* Fetch single dimensional array from multi dimensional array (array_column analog) |
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* |
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* @param array $array |
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* @param string $valueParam |
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* @param string $keyParam |
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* @return array |
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*/ |
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public function flatten(array $array, $valueParam, $keyParam = null) |
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{ |
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if (PHP_VERSION_ID >= 50500) { |
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return array_column($array, $valueParam, $keyParam); |
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} |
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$data = array(); |
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if(!empty($array)) { |
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foreach($array as $key => $value) { |
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if(empty($keyParam)) { |
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$data[$key] = $value[$valueParam]; |
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} else { |
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$data[$value[$keyParam]] = $value[$valueParam]; |
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} |
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} |
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} |
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return $data; |
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} |
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/** |
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* Check is assoc array |
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* |
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* @param array $array |
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* @return bool |
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*/ |
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public function isAssoc(array &$array) |
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{ |
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$keys = array_keys($array); |
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return array_keys($keys) !== $keys; |
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} |
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/** |
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* Check is array |
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* |
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* @param mixed $value value to check |
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* @return boolean |
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*/ |
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public function isArray($value) |
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{ |
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if (is_array($value)) { |
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return true; |
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} |
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return (is_object($value) && $value instanceof \ArrayAccess); |
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} |
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/** |
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* Check for key exists |
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* |
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* @param array $array |
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* @param mixed $key |
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* @return bool |
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*/ |
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public function has(array $array, $key) |
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{ |
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return array_key_exists($key, $array); |
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} |
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/** |
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* Delete element from array |
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* |
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* @param array $array |
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* @param $key |
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* @return bool |
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*/ |
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public function delete(array &$array, $key) |
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{ |
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$result = false; |
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if ($this->has($array, $key)) { |
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unset($array[$key]); |
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$result = true; |
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} |
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return $result; |
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} |
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/** |
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* Extract values list from array |
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* |
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* @param array $array |
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* @param array $keys |
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* @return array |
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*/ |
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public function extract(array $array, array $keys) |
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{ |
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$found = []; |
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if($array && $keys) { |
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foreach ($keys as $key) { |
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if ($this->has($array, $key)) { |
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$found[$key] = $array[$key]; |
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} |
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} |
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} |
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return $found; |
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} |
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/** |
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* Extract from array with exclude |
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* |
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* @param array $array |
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* @param array $keys |
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* @return array |
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*/ |
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public function exclude(array $array, array $keys) |
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{ |
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if($array && $keys) { |
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foreach ($keys as $key) { |
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$this->delete($array, $key); |
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} |
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} |
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return $array; |
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} |
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/** |
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* Check is multi dimensional array |
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* |
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* @param array $array |
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* @return bool |
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*/ |
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public function isMultiDimensional(array &$array) |
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{ |
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return (count($array) !== count($array, true)); |
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} |
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/** |
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* Get element from array |
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* |
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* @param array $array |
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* @param string $key |
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* @param string $default |
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* @return mixed |
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*/ |
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public function getElement(array &$array, $key, $default = null) |
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{ |
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return (array_key_exists($key, $array)) ? $array[$key] : $default; |
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} |
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/** |
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* Clear array by filter |
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* |
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* @param array $array |
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* @param array $filter |
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* @return array |
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*/ |
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public function clear(array $array, array $filter = ['', null]) |
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{ |
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return array_diff($array, $filter); |
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} |
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/** |
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* Insert after |
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* |
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* @param array $array |
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* @param array $insert |
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* @param mixed $key |
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* @param string $position |
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* @return array |
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*/ |
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public function insert(array $array, $key, array $insert, $position = self::INSERT_TYPE_AFTER) |
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{ |
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if (!in_array($position, $this->insertTypes)) { |
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return false; |
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} |
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$keyPosition = array_search($key, array_keys($array)); |
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if (self::INSERT_TYPE_AFTER == $position) { |
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$keyPosition++; |
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} |
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if (false !== $keyPosition ) { |
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$result = array_slice($array, 0, $keyPosition); |
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$result = array_merge($result, $insert); |
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$result = array_merge($result, array_slice($array, $keyPosition)); |
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} else { |
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$result = array_merge($array, $insert); |
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} |
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return $result; |
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} |
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/** |
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* Insert after |
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* |
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* @param array $array |
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* @param mixed $key |
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* @param array $insert |
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* @return array |
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*/ |
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public function insertAfter(array $array, $key, array $insert) |
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{ |
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return $this->insert($array, $key, $insert); |
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} |
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/** |
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* Insert before |
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* |
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* @param array $array |
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* @param mixed $key |
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* @param array $insert |
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* @return array |
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*/ |
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public function insertBefore(array $array, $key, array $insert) |
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{ |
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return $this->insert($array, $key, $insert, self::INSERT_TYPE_BEFORE); |
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} |
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} |
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.