下面有一个简单的(BBCode)PHP代码,用于将代码插入注释/帖子中。
function highlight_code($str) {
$search = array(
'/'[code=(.*?),(.*?)'](((?R)|.)*?)'['/code']/is',
'/'[quickcode=(.*?)'](((?R)|.)*?)'['/quickcode']/is'
);
$replace = array(
'<pre title="$2" class="brush: $1;">$3</pre>',
'<pre class="brush: $1; gutter: false;">$2</pre>'
);
$str = preg_replace($search, $replace, $str);
return $str;
}
我想做的是在以下位置插入函数:
$replace = array(
'<pre title="$2" class="brush: $1;">'.myFunction('$3').'</pre>',
^here
'<pre class="brush: $1; gutter: false;">'.myFunction('$2').'</pre>'
^here
);
从我在SO上读到的内容来看,我可能需要使用preg_replace_callback()
或电子修改器,但我不知道如何做到这一点;我对regex的了解不是很好。非常感谢您的帮助!
您可以使用以下代码段(e-modifier):
function highlight_code($str) {
$search = array(
'/'[code=(.*?),(.*?)'](((?R)|.)*?)'['/code']/ise',
'/'[quickcode=(.*?)'](((?R)|.)*?)'['/quickcode']/ise'
);
// these replacements will be passed to eval and executed. Note the escaped
// single quotes to get a string literal within the eval'd code
$replace = array(
'''<pre title="$2" class="brush: $1;">''.myFunction(''$3'').''</pre>''',
'''<pre class="brush: $1; gutter: false;">''.myFunction(''$2'').''</pre>'''
);
$str = preg_replace($search, $replace, $str);
return $str;
}
或者这个(回调):
function highlight_code($str) {
$search = array(
'/'[code=(.*?),(.*?)'](((?R)|.)*?)'['/code']/is',
'/'[quickcode=(.*?)'](((?R)|.)*?)'['/quickcode']/is'
);
// Array of PHP 5.3 Closures
$replace = array(
function ($matches) {
return '<pre title="'.$matches[2].'" class="brush: '.$matches[1].';">'.myFunction($matches[3]).'</pre>';
},
function ($matches) {
return '<pre class="brush: '.$matches[1].'; gutter: false">'.myFunction($matches[2]).'</pre>';
}
);
// preg_replace_callback does not support array replacements.
foreach ($search as $key => $regex) {
$str = preg_replace_callback($search[$key], $replace[$key], $str);
}
return $str;
}