@ 2014-05-27T18:07:41Z <?php
$str = 'foo the moo cow not the moo cow is the cow the moo cow is the cow not the moo cow bar';
print $str;
print preg_replace('/(\b.*\b)\1/', '', $str);
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Output for 4.3.0 - 4.3.11 , 4.4.0 - 4.4.9 , 5.0.0 - 5.0.5 , 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 , 5.4.0 - 5.4.45 , 5.5.0 - 5.5.38 , 5.6.0 - 5.6.40 , 7.0.0 - 7.0.33 , 7.1.0 - 7.1.33 , 7.2.0 - 7.2.33 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 foo the moo cow not the moo cow is the cow the moo cow is the cow not the moo cow barfoo the moo cow not not the moo cow bar preferences:dark mode live preview
316.54 ms | 406 KiB | 460 Q