increment() increments value of the item by value. Consider the following example.

<?php
$num = 8;
echo "<br /> " . $num++;
echo "<br /> " . ++$num;
// Output:
// 8
// 10
?>

Pre-Increment ++$a
Increments $a by one, then returns $a.

Post-Increment $a++
Returns $a, then increments $a by one.

PHP Increment Operator is a post from: PHP Magic Book - Free PHP Scripts, Tutorials and Downloads

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