Generating a float random value in PHP is little bit tricky. Both rand() and mt_rand() will return Integer value. But sometimes you need to generate random float value, for currency or math case for examples. So i would like to share my little script to generate a Float random value.
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 | /** * Generate Float Random Number * * @param float $Min Minimal value * @param float $Max Maximal value * @param int $round The optional number of decimal digits to round to. default 0 means not round * @return float Random float value */function float_rand($Min, $Max, $round=0){ //validate input if ($min>$Max) { $min=$Max; $max=$Min; } else { $min=$Min; $max=$Max; } $randomfloat = $min + mt_rand() / mt_getrandmax() * ($max - $min); if($round>0) $randomfloat = round($randomfloat,$round); return $randomfloat;} |
Usage:
1 2 | float_rand(0.01,5.00); //Generate float value with no roundedfloat_rand(0.01,5.00,2); //Generate float value with rounded to 2 decimals |
This code is free to use in any php application you like. If you like please leave me any comments, i really appreciate it.
should be if ($Min>$Max), not if ($min>$Max)…