PHP intercepts the string and retains the complete xml tag function code_PHP tutorial

Copy code The code is as follows:

    /**
     * author: goosman
     * blog: http://blog.csdn.net/lgg201
     * mail: lgg860911@yahoo.com.cn
     */ 

    $str    = '01234567890120123456789'; 
    function substr_remain_tag($s, $o, $l) { 
        $is_match   = preg_match_all(
    #该正则表达式解析xml标签, 标签属性内部支持转义符"\", 支持对"\"自身和对应引号的转义 
            (?:          #属性列表 
            \s+       #前置空格 
            \w+    #属性名
            \s*    #属性名后的空白(为了兼容) 
            =        #属性名值之间的等号 
            \s*       #属性值前的空白(为了兼容) 
            (?:         #属性值(引号处理) 
                "         #双引号的情况 
                (?: 
                    \\\\\\\\   #吃掉连续两个转义符(表示转义符自身) 

                    \\\\"          #吃掉转义符接着一个引号(表示转义的引号) 

                    [^"\\\\]*   #其他字符 
                )* 
                " 

                '       #单引号情况 
                (?: 
                    \\\\\\\\   #吃掉连续两个转义符(表示转义符自身) 

                    \\\\'   #吃掉转义符接着一个引号(表示转义的引号) 

                    [^'\\\\]*       #其他字符 
                )* 
                ' 
            ) 
        )* 
    > 
    .*?               #标签内容 
    (?1)>     #结束标签 
    ;x 
    heredoc 
    , $s, $matches, PREG_OFFSET_CAPTURE, $o); 
        if ( $is_match ) { 
            foreach ( $matches[0] as $match ) { 
                $o0 = $match[1]; 
                #标签左边界越过截取目标右边界, 退出 
if ( $o0 >= $o + $l ) break;
                                                                                    $o0 + $l0                                                                                                                                                                  ) .chr(10);





http://www.bkjia.com/PHPjc/326438.html

www.bkjia.com

true

http: //www.bkjia.com/PHPjc/326438.html

TechArticle

Copy the code as follows: ?php /*** author: goosman * blog: http://blog.csdn.net/lgg201 * mail: lgg860911@yahoo.com.cn*/ $str = '0123456789a012/a0123456789'; function substr_rem...