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@ 2013-12-15T22:56:59Z

<?php





echo strtolower(preg_replace('/([a-zA-Z])\s*=\s*([a-zA-Z])\s*(AND|OR)\s*/i', '$1_$2', 'algo     =    algo   anD otro = oTro AND'));

Output
Performance
VLD
References
Branches

preg_replace: documentation ( source)
strtolower: documentation ( source)

preferences:dark modelive preview

61.46 ms | 402 KiB | 5 Q