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( 'a 123456789b ', 'a ', 'b '); ?>