How to delete specified key from Array array in PHP

Method: First use the array_search("key name",array_keys(array)) statement to obtain the corresponding key value in the array according to the specified key name; then use the "array_splice(array, key value, 1)" statement to delete Specify the key element.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

/**
 * php除数组指定的key值(直接删除key值实现)
 * @param unknown $data
 * @param unknown $key
 * @return unknown
 */
function array_remove($data, $key){
	if(!array_key_exists($key, $data)){
		return $data;
	}
	$keys = array_keys($data);
	$index = array_search($key, $keys);
	if($index !== FALSE){
		array_splice($data, $index, 1);
	}
	return $data;
}

Supplementary instructions:

array_search This function searches according to value and gets the position. If it cannot be found, it returns NULL or false; therefore, when searching for the position corresponding to the key by key, you need to find it in $keys. This is what calls array_keys. reason. Because the array_search function may return NULL or false, it must be used in absolute comparison.

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