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Check if a number is odd or even |
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Using PHP's bitwise And operator (&), we can check to see if the
1-bit is on or off. If it's on, we have an odd number, otherwise, an
even number. We can also accomplish the task by using the modulus
operator.
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<?php
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$number = 35;
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if($number & 1) {
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echo "$number is odd"; // sure enough
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} else {
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}
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// or... you can do it another way:
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// Per micro5033's comment, the modulous operator (%) returns the remainder of a division.
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// The remainder of any even integer that is divided by two will always be zero. PHP
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// will conveniently interpret 0 as false and any non-zero as true, so...
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if($number % 2) {
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} else {
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}
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?>
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