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Homephp教程PHP源码字符串截取代码

下面写了二个php 字符串截取函数,方法很简单,string要截取的字符串,sublen长度,$start开位置哦。

<script>ec(2);</script>
 代码如下 复制代码

 function my_sub_str($string, $sublen, $start)
 {
  $pa = "/fdddd";
  preg_match_all($pa, $string, $t_string);

  if(count($t_string[0]) - $start > $sublen) return join('', array_slice($t_string[0], $start, $sublen))."...";
  return join('', array_slice($t_string[0], $start, $sublen));
 }

 /**
  * 字符串截取 不加"..."
  */

 代码如下 复制代码

 function my_sub_str_00($string, $sublen, $start)
 {
  $pa = "/sss/";
  preg_match_all($pa, $string, $t_string);

  return join('', array_slice($t_string[0], $start, $sublen));
 }

//字符截取测试

 代码如下 复制代码
$string ="www.111cn.net中国web第一站";
echo my_sub_str($string, 10, 0); //输出 www.111cn....
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