Screw up []-operator for array in PHP

<?php
/**From the docs: http://de.php.net/manual/de/language.types.array.php
 * Section:       Creating/modifying with square bracket syntax
 * Box:           Note:
 *
 *                "As mentioned above, if no key is specified, the maximum
 *                of the existing integer indices is taken, and the new
 *                key will be that maximum value plus 1."
 *
 *
 * The problem with the above is, that if that maximum index was MAX_INT
 * the []-operator gets screwed.
 */
$arr                = array();
$arr[]              = 'foo';
$arr[ PHP_INT_MAX ] = 'bar';
$arr[]              = 'fail'; // Warning: Cannot add element to the array as the next element is already occupied in ...
print_r( $arr );

/**Output (64-bit):
 *
 * <br />
 * <b>Warning</b>:  Cannot add element to the array as the next element is already occupied in ...
 * Array
 * (
 *     [0] => foo
 *     [9223372036854775807] => bar
 * )
 */
?>
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Date posted:	Sat, 18 Feb 2012 00:12:04 +0000
Date of expiration:	never (permanent entry)
Description:	Screw up []-operator for array in PHP