php 应用小技巧（会不断更新）

去掉文章内容中还有script 的部分  $body = preg_replace("@<script[^>]*?>.*?</script>@si","",$body);

<?php

$str = "Hello Friend";

$arr1 = str_split($str);
$arr2 = str_split($str, 3);

print_r($arr1);
print_r($arr2);

?>




Array
(
    [0] => H
    [1] => e
    [2] => l
    [3] => l
    [4] => o
    [5] =>
    [6] => F
    [7] => r
    [8] => i
    [9] => e
    [10] => n
    [11] => d
)
Array
(
    [0] => Hel
    [1] => lo 
    [2] => Fri
    [3] => end
)