Array Functions

PHP Array Functions

Function	Description
`count($arr)`	Number of items
`array_push($arr,$val)`	Add to end
`array_pop($arr)`	Remove from end
`array_shift($arr)`	Remove from start
`array_unshift($arr,$val)`	Add to start
`in_array($val,$arr)`	Check exists
`array_search($val,$arr)`	Find key
`array_merge($a,$b)`	Merge arrays
`array_slice($arr,$start,$len)`	Slice
`array_unique($arr)`	Remove duplicates
`array_reverse($arr)`	Reverse
`array_keys($arr)`	Get keys
`array_values($arr)`	Get values

Example

<?php
$nums = [3, 1, 4, 1, 5, 9, 2, 6];
echo count($nums);                    // 8
echo in_array(5, $nums) ? "yes":"no"; // yes
sort($nums);                          // sort in place
$unique = array_unique($nums);        // remove dupes
$sliced = array_slice($nums, 0, 3);   // first 3
print_r($sliced);
?>

PHP

Full Editor

Related Resources

PHP Reference

Complete tag & property list

PHP How-To Guides

Step-by-step practical guides

PHP Exercises

Practice what you've learned