编译失败:在偏移6处无需重复

Question

我不知道为什么这不会工作...在多个regex跳棋和测试人员中完美地工作.但是当它运行它PHP我得到这个错误:

Warning: `preg_match()` [function.preg-match]: 
Compilation failed: nothing to repeat at offset 6 in /home/splose/public_html/index/index.php on line 49

即时运行:

if(preg_match('[\\/^$.|?*+():<>]', $username)){}

Answer 1

也许你可以尝试划分你的模式？:

if(preg_match('/[\\/^$.|?*+():<>]/', $username)){}

直接取自PHP Docs:

Often used delimiters are forward slashes (/), hash signs (#) and tildes (~).