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General: Ensure wp_rand()
returns 0
when $min
and $max
values are equal to 0
.
This changeset ensures `wp_rand()` returns zero instead of a random number when both `$min` and `$max` values are equal to zero. Fixes #55194. Built from https://develop.svn.wordpress.org/trunk@53473 git-svn-id: http://core.svn.wordpress.org/trunk@53062 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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@ -2596,20 +2596,31 @@ if ( ! function_exists( 'wp_rand' ) ) :
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*
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* @since 2.6.2
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* @since 4.4.0 Uses PHP7 random_int() or the random_compat library if available.
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* @since 6.1.0 Returns zero instead of a random number if both `$min` and `$max` are zero.
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*
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* @global string $rnd_value
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*
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* @param int $min Lower limit for the generated number.
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* @param int $max Upper limit for the generated number.
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* @param int $min Optional. Lower limit for the generated number.
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* Accepts positive integers or zero. Defaults to 0.
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* @param int $max Optional. Upper limit for the generated number.
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* Accepts positive integers. Defaults to 4294967295.
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* @return int A random number between min and max.
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*/
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function wp_rand( $min = 0, $max = 0 ) {
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function wp_rand( $min = null, $max = null ) {
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global $rnd_value;
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// Some misconfigured 32-bit environments (Entropy PHP, for example)
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// truncate integers larger than PHP_INT_MAX to PHP_INT_MAX rather than overflowing them to floats.
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$max_random_number = 3000000000 === 2147483647 ? (float) '4294967295' : 4294967295; // 4294967295 = 0xffffffff
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if ( null === $min ) {
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$min = 0;
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}
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if ( null === $max ) {
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$max = $max_random_number;
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}
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// We only handle ints, floats are truncated to their integer value.
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$min = (int) $min;
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$max = (int) $max;
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@ -2618,10 +2629,9 @@ if ( ! function_exists( 'wp_rand' ) ) :
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static $use_random_int_functionality = true;
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if ( $use_random_int_functionality ) {
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try {
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$_max = ( 0 != $max ) ? $max : $max_random_number;
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// wp_rand() can accept arguments in either order, PHP cannot.
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$_max = max( $min, $_max );
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$_min = min( $min, $_max );
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$_max = max( $min, $max );
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$_min = min( $min, $max );
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$val = random_int( $_min, $_max );
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if ( false !== $val ) {
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return absint( $val );
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@ -2661,9 +2671,7 @@ if ( ! function_exists( 'wp_rand' ) ) :
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$value = abs( hexdec( $value ) );
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// Reduce the value to be within the min - max range.
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if ( 0 != $max ) {
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$value = $min + ( $max - $min + 1 ) * $value / ( $max_random_number + 1 );
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}
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$value = $min + ( $max - $min + 1 ) * $value / ( $max_random_number + 1 );
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return abs( (int) $value );
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}
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@ -16,7 +16,7 @@
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*
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* @global string $wp_version
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*/
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$wp_version = '6.1-alpha-53472';
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$wp_version = '6.1-alpha-53473';
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/**
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* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
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