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@ 2013-12-01T10:21:19Z

<?php
    $keywords = 'keyword1 keyword2 keyword3';
    $keywords = explode(" ", $keywords);
    echo "'". implode("', '", $keywords) . "'";

Output
Performance
VLD
References
Branches

implode: documentation ( source)
explode: documentation ( source)

preferences:dark modelive preview

28.93 ms | 402 KiB | 5 Q