Finding Words Not Followed by Other Words : preg_match « String « PHP






  1. PHP
  2. String
  3. preg_match

Finding Words Not Followed by Other Words

 
<?php
  $regex = "/\bhello\b(?!\sworld\b)/";

  $valid = "hello";
  $invalid = "hello world!";

  if (preg_match($regex, $valid)) {
    echo "Found match:  '" . $valid . "'\n";
  } else {
    echo "No match:  '" . $valid . "'\n";
  }

  if (preg_match($regex, $invalid)) {
    echo "Found match:  '" . $invalid . "'\n";
  } else {
    echo "No match:  '" . $invalid . "'\n";
  }

?>








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