preg_match("/(?).*?(?=)/", $html, $result);
报错
preg_match(): Compilation failed: lookbehind assertion is not fixed length at offset 24
是为啥呢?
就是\s*那里,php的正则不是这样写嘛?
preg_match("/(?).*?(?=)/", $html, $result);
报错
preg_match(): Compilation failed: lookbehind assertion is not fixed length at offset 24
是为啥呢?
就是\s*那里,php的正则不是这样写嘛?
后瞻断言的内容被严格限制为只能用于匹配定长字符串。
http://php.net/manual/zh/regexp.reference.assertions.php
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