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

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Release: 2016-07-21 15:13:57
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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
<(\w+) #标签开始
(?: #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 
         #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 < $o + $l ) continue; >                                                                                                                                                                 ) .chr(10);





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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...

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