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  1. <?php
  2. $string = "From: user1@somewhere.com This is just a test.. the original message was sent From: user2@abc.com";
  3.  
  4. $regExp = "/^From:\s*(\S+)/";
  5. $outputArray = array();
  6. if ( preg_match($regExp, $string, $outputArray) ) {
  7. print_r($outputArray[1]);
  8. }
Success #stdin #stdout 0.02s 24144KB
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Standard input is empty
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user1@somewhere.com
https://ideone.com/jCKHMu
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
secret

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