Revision: 2721
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at April 4, 2007 09:25 by tiaonlab
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$number & 1;
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http://www.tiaon.com/wordpress/2007/03/27/the-quicker-way-to/
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In PHP & or AND is a bitwise operator. When used it performs bitwise operation between two numbers. In the following example, the operator will test if the last bit of $number is 1. Thus successfully tests if $number is even or odd.
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Test if a number is odd or even using bitwise operator
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PHP