PHP正则表达式合集

1、匹配数字,/^d+$/,2、匹配字母,/^[azAZ]+$/,3、匹配汉字,/^[u4e00u9fa5]+$/,4、匹配邮箱,/^[azAZ09_]+@[azAZ09_]+(.[azAZ09_]+)+$/,5、匹配手机号,/^1[3456789]d{9}$/,1、匹配URL,/^(https?://)?([daz.]+).([az.]{2,6})([/w .]*)*/?$/,2、匹配IP地址,/((25[05]|2[04]d|[01]?dd?).){3}(25[05]|2[04]d|[01]?dd?)/,3、匹配日期（YYYYMMDD）,/^d{4}d{2}d{2}$/,4、匹配时间（HH:mm:ss）,/^d{2}:d{2}:d{2}$/,5、匹配身份证号码（18位）,/^d{6}(18|19|20)?d{2}(0[19]|1[02])(0[19]|[12][09]|3[01])d{3}[09Xx]$/,1、preg_match()：检查字符串是否匹配正则表达式，返回匹配次数。,preg_match($pattern, $subject, $matches);,2、preg_match_all()：检查字符串是否匹配正则表达式，返回所有匹配项。,preg_match_all($pattern, $subject, $matches);,3、preg_replace()：替换字符串中与正则表达式匹配的部分。,preg_replace($pattern, $replacement, $subject);,4、preg_replace_callback()：使用回调函数替换字符串中与正则表达式匹配的部分。,preg_replace_callback($pattern, $callback, $subject);,1、提取URL中的域名和路径,“`php,function getDomainAndPath($url) {,if (preg_match(‘/^(https?://)?([daz.]+).([az.]{2,6})([/w .]*)*/?$/’, $url, $matches)) {,return [,‘domain’ => $matches[2] . ‘.’ . $matches[3],,‘path’ => ‘/’ . ltrim($matches[5], ‘/’),,];,} else {,return [‘error’ => ‘Invalid URL’];,},},“`,2、验证密码强度（至少包含一个大写字母、一个小写字母、一个数字和一个特殊字符）,“`php,function validatePassword($password) {,if (preg_match(‘/^(?=.*[az])(?=.*[AZ])(?=.*d)(?=.*[@$!%*?&])[AZazd@$!%*?&]{8,}$/’, $password)) {,return true;,} else {,return false;,},},“`,
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