18.1.8 Pre-increment where possibleThis is NOT the latest copy of this book; click here for the latest version.
Take advantage of the fact that PHP allows you to post-increment ($i++) and pre-increment (++$i). The meaning is the same as long as you are not writing anything like $j = $i++, however pre-incrementing is almost 10% faster, which means that you should switch from post- to pre-incrementing when you have the opportunity, especially in tight loops. Note that both the Zend Optimizer and IonCube PHP Accelerator will implement this optimisation for you.
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