PHP sample code for filtering the first character of an array

phpIn the array, the array needs to be filtered by the first character. This is achieved through the following code. Friends in need can refer to the

code as follows:

<?php 
$array = array( 
&#39;abcd&#39;, 
&#39;abcde&#39;, 
&#39;bcde&#39;, 
&#39;cdef&#39;, 
&#39;defg&#39;, 
&#39;defgh&#39; 
); 
$str = &#39;~&#39;.implode(&#39;~&#39;,$array).&#39;~&#39;; 
$word = $_GET[&#39;word&#39;]; //url = xxx.php?word=a 
preg_match_all("/~({$word}(?:[^~]*))/i",$str,$matches); 
var_dump($matches[1]); 

//输出 
//array(2) { [0]=> string(4) "abcd" [1]=> string(5) "abcde" } 
//End_php

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