The implementation code for removing elements from the php array

 
<?php 
$arr = array('a','b','c','d'); 
unset($arr[1]); 
print_r($arr); 
?> 

After print_r($arr), the result is not that, but Array ([0] = > a [2] = > c [3] = > d
So how do you get the missing elements to be filled in and the array to be re-indexed? The answer is array_splice () :

 
<?php 
$arr = array('a','b','c','d'); 
array_splice($arr,1,1); 
print_r($arr); // <span style="font-family: Simsun;font-size:16px; ">Array ( [0] => a [1] => c [2] => d )</span> 
?>