- var_dump: documentation ( source)
- array_flip: documentation ( source)
- in_array: documentation ( source)
<?php
$a = array('a','b','c','d','e');
function arrayFlip($a) {
$b = array_flip($a);
var_dump(isset($a['a']));
}
function inArray($a) {
var_dump(in_array(1,$a));
}
in_array($a);