Greedy versus nongreedy matching : Regular Expressions « String « PHP






  1. PHP
  2. String
  3. Regular Expressions

Greedy versus nongreedy matching

 
<?php
$html = '<em>love</em> you <em>.</em>';
// Greedy
$matchCount = preg_match_all('@<em>.+</em>@', $html, $matches);
print "Greedy count: " . $matchCount . "\n";
// Nongreedy
$matchCount = preg_match_all('@<em>.+?</em>@', $html, $matches);
print "First non-greedy count: " . $matchCount . "\n";
// Nongreedy
$matchCount = preg_match_all('@<em>.+</em>@U', $html, $matches);
print "Second non-greedy count: " . $matchCount . "\n";
?>








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