ArrayLib

Inverses the first and second level keys of an associative array, keying the result by the second level, and combines all first level entries within them.

Before:

After:

Return an array where the keys are all equal to the values.

Flattens a multi-dimensional array to a one level array without preserving the keys

Filter an array by keys (useful for only allowing certain form-input to be saved).

Determines if an array is associative by checking for existing keys via array_key_exists().

Recursively searches an array $haystack for the value(s) $needle.

Assumes that all values in $needle (if $needle is an array) are at the SAME level, not spread across multiple dimensions of the $haystack.

Similar to array_map, but recurses when arrays are encountered.

Actually only one array argument is supported.

Recursively merges two or more arrays.

Behaves similar to array_merge_recursive(), however it only merges values when both are arrays rather than creating a new array with both values, as the PHP version does. The same behaviour also occurs with numeric keys, to match that of what PHP does to generate $_REQUEST.

Takes an multi dimension array and returns the flattened version.

Iterate list, but allowing for modifications to the underlying list.

Items in $list will only be iterated exactly once for each key, and supports items being removed or deleted. List must be associative.