当我运行如下:PHP的正则表达式不编译
$MATH_REGEX = '/(?=(?<!\\)\$).(.+?)(?<!\\)\$/';
preg_replace_callback($MATH_REGEX, function ($match) {
$latex_code = $match[0];
return lx($latex_code); //lx is defined elsewhere
}, "Test string $a=b$ .");
我得到这个:
$ php test.php PHP Warning: preg_replace_callback(): Compilation failed: missing) at offset 26 in /home/sbird/public_html/faith/lib/view.php on line 26
什么是错的我正则表达式?
编辑:
$ php --version PHP 5.3.2-1ubuntu4.15 with Suhosin-Patch (cli) (built: May 4 2012 00:38:52) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
您可以添加原始(未转义)正则表达式在你的问题? – buckley
你有没有试过不使用匿名函数? –
@EdHeal匿名函数有什么问题? – wroniasty