Returns the key for needle if it is found in the array, false otherwise. If needle is found in haystack more than once, the first matching key is returned. To ...

Array_search · In_array · Array_values · Array_keys

Compares values only. Ignores indexes of array. Example: array_diff, array_intersect. [prefix] u - will do comparison with user defined function. Letter u can ...

Array_chunk · Is_array · Array_change_key_case · Array_is_list

Arrays ¶. An array in PHP is actually an ordered map. A map is a type that associates values to keys. This type is optimized for several different uses; ...

Notes ¶. Note: array() is a language construct used to represent literal arrays, and not a regular function.

The searched value. Note: If needle is a string, the comparison is done in a case-sensitive manner. haystack. The array.

Array_search · In_array · Key_exists

Arrays ¶ · Introduction · Installing/Configuring · Requirements · Installation · Runtime Configuration · Predefined Constants · Sorting Arrays · Array Functions.

There's a lot of multidimensional array_keys function out there, but each of them only merges all the keys in one flat array. Here's a way to find all the keys ...

array_key_exists() returns true if the given key is set in the array. key can be any value possible for an array index. Parameters ¶. key. Value to check.

Applies the user-defined callback function to each element of the array array. array_walk() is not affected by the internal array pointer of array . array_walk ...

Array_walk · Array_walk_recursive · Iterator_apply

array_map() returns an array containing the results of applying the callback to the corresponding value of array (and arrays if more arrays are provided) ...