Regex pattern - If email address is not valid / does not match | |||||||||||
| I want to check in PHP if email address, that is entered by user is not correct. To validate if email address is correct I used: preg_match("/^([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,6})$/", $email) Now I need to create a condition, to check if email address does not match the pattern. Do you have any suggestions ? | |||||||||||
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| Hi, To check if email address is not valid, you can use this: if ( preg_match("/^(?![a-zA-Z0-9\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,6}$).*/", $email) ) { echo "Email address is not valid"; } The ?! creates a negative lookahead in pattern. | |||||||||||
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