php截取指定字符串之间的字符串的类

一个php截取指定字符串之间的字符串的类

<?php

class get_c_str {

var $str;

var $start_str;

var $end_str;

var $start_pos;

var $end_pos;

var $c_str_l;

var $contents;

function get_str($str,$start_str,$end_str){

$this->str = $str;

$this->start_str = $start_str;

$this->end_str = $end_str;

$this->start_pos = strpos($this->str,$this->start_str)+strlen($this->start_str);

$this->end_pos = strpos($this->str,$this->end_str);

$this->c_str_l = $this->end_pos - $this->start_pos;

$this->contents = substr($this->str,$this->start_pos,$this->c_str_l);

return $this->contents;

}

}

?>

上述类的使用方法：

<?php

$get_c_str = new get_c_str;

echo $get_c_str -> get_str('a123456789b','a','b');

?>