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  1. <?php
  2.  
  3. $tests = ['name@mail.ru','@twitterUser','vas.pupkin@gmail.com.com'];
  4. foreach( $tests AS $i=>$e) {
  5.     if( preg_match( '/.+(?=@)/', $e, $matches)) {
  6.          echo $matches[0].PHP_EOL;
  7.     } else {
  8.          echo "no match\n";
  9.     }
  10. }
Success #stdin #stdout 0.03s 52480KB
comments (?)
stdin 
Standard input is empty
stdout 
name
no match
vas.pupkin
https://ideone.com/CigXeo
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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