PHP Reference.
PHP Array functions.
A (hopefully useful) list of some array functions, what they do, and an example usage.
| FUNCTION | DESCRIPTION | EXAMPLE |
|---|---|---|
| array() | Creates arrays and hashes. | $desserts = array("chocolate", "icecream"); $appliances = array("fridge" => "Kelvinator", "toaster" => "Sunbeam"); |
| sizeof() | Returns the number of array elements. | sizeof($desserts); // Returns 2 in this case. |
| is_array() | Test if a variable is an array. | is_array($desserts); // Returns true, since $desserts is an array. |
| range() | Automatically create an array containing a range of elements | $letters = range("b", "f"); // Returns: ("b", "c", "d", "e", "f") |
| array_values() | Returns an array of a hashes values. | $values = array_values($hash-array); |
| array_keys() | Returns an array of a hashes keys. | $keys = array_keys($hash-array); |
| array_search() | Find value in array, returns key or list number. | array_search("lookfor", $in); |
| in_array() | Returns true or false if an array contains a specific value. | in_array("lookfor", $in); |
| extract() | Extracts list items into matched variable/value pairs. | extract($deserts); // Returns variabes named as the hash keys. |
| list() | Assigns list values to variables. | list($a, $b) = $desserts; |
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