匹配是否含有特殊字符
if (preg_match("/[\'\/~`\!@#\$%\^&\*\(\)_\-\+=\{\}\[\]\|;:\"\<\>,\.\?\\\]/", '測試')) {
echo 'no';
}else{
echo 'yes';
}
匹配url
if (!preg_match("/^(https|http)?:\/\/([[:alnum:]]|[:#%&_=\(\)\.\? \+\-@\/\$])+$/ui", $val['content_source_url'])) {
echo '外鏈格式不正確';
}