regex - filter email in php using preg -

is there email filter in php other filter_validate_email? want . , @ compulsory in user email.

is there built-in filter can me accomplish task?

filter_validate_email it.

without . :

<?php   $email = "user@emailcom"; if(filter_var($email, filter_validate_email)){      var_dump(filter_var($email, filter_validate_email));  }else{      var_dump(filter_var($email, filter_validate_email));     }   // returns false 

without @ :

<?php   $email = "useremail.com"; if(filter_var($email, filter_validate_email)){      var_dump(filter_var($email, filter_validate_email));  }else{      var_dump(filter_var($email, filter_validate_email));     }   // returns false 

with correct mail :

<?php   $email = "user@email.com"; if(filter_var($email, filter_validate_email)){      var_dump(filter_var($email, filter_validate_email));  }else{      var_dump(filter_var($email, filter_validate_email));     }   // returns user@email.com