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@ 2013-03-15T09:16:56Z

<?php
$test = 'GB82WEST12345698765432';
$test2 = chunk_split ( $test, 4, ' ');
echo $test .' ---> ' .$test2."\n";

Output
Performance
VLD
References
Branches

chunk_split: documentation ( source)

preferences:dark modelive preview

42.51 ms | 402 KiB | 5 Q