Online PHP editor | perf for i2p74

<?php <?php /** * Base62: A class to convert a number from any base between 2-62 to any other base between 2-62 * It doesn't use BC Math functions so works without the use of BC Math library. * It uses the native base_convert functions when the base is below 36 for faster execution. * The output number is backward compatible with the native base_convert function. * * Author : Lalit Patel * Website: http://www.lalit.org/lab/base62-php-convert-number-to-base-62-for-short-urls * License: Apache License 2.0 * http://www.apache.org/licenses/LICENSE-2.0 * Version: 0.1 (08 December 2011) * * Usage: * $converted_num = Base62::convert($number, $from_base, $to_base); */ class Base62 { /** * Converts a number/string from any base between 2-62 to any other base from 2-62 * @param mixed $number * @param integer $from_base * @param integer $to_base * @return $conveted_number. */ public static function convert($number, $from_base=10, $to_base=62) { if($to_base > 62 || $to_base < 2) { trigger_error("Invalid base (".he($to_base)."). Max base can be 62. Min base can be 2.", E_USER_ERROR); } //OPTIMIZATION: no need to convert 0 if("{$number}" === '0') { return 0; } //OPTIMIZATION: if to and from base are same. if($from_base == $to_base){ return $number; } //OPTIMIZATION: if base is lower than 36, use PHP internal function if($from_base <= 36 && $to_base <= 36) { // for lower base, use the default PHP function for faster results return base_convert($number, $from_base, $to_base); } // char list starts from 0-9 and then small alphabets and then capital alphabets // to make it compatible with eixisting base_convert function $charlist = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; if($from_base < $to_base) { // if converstion is from lower base to higher base // first get the number into decimal and then convert it to higher base from decimal; if($from_base != 10){ $decimal = self::convert($number, $from_base, 10); } else { $decimal = intval($number); } //get the list of valid characters $charlist = substr($charlist, 0, $to_base); if($number == 0) { return 0; } $converted = ''; while($number > 0) { $converted = $charlist{($number % $to_base)} . $converted; $number = floor($number / $to_base); } return $converted; } else { // if conversion is from higher base to lower base; // first convert it into decimal and the convert it to lower base with help of same function. $number = "{$number}"; $length = strlen($number); $decimal = 0; $i = 0; while($length > 0) { $char = $number{$length-1}; $pos = strpos($charlist, $char); if($pos === false){ trigger_error("Invalid character in the input number: ".($char), E_USER_ERROR); } $decimal += $pos * pow($from_base, $i); $length --; $i++; } return self::convert($decimal, 10, $to_base); } } } echo Base62::convert('53c15ee0c1899bd6478b459c', 16, 56); ?>

Version	System time (s)	User time (s)	Memory (MiB)
5.4.30	0.008	0.039	12.50
5.4.29	0.009	0.039	12.50
5.4.28	0.008	0.040	12.39
5.4.27	0.004	0.040	12.39
5.4.26	0.006	0.040	12.39
5.4.25	0.007	0.042	12.39
5.4.24	0.006	0.039	12.39
5.4.23	0.012	0.036	12.38
5.4.22	0.006	0.041	12.38
5.4.21	0.014	0.034	12.38
5.4.20	0.010	0.040	12.38
5.4.19	0.008	0.040	12.38
5.4.18	0.006	0.042	12.38
5.4.17	0.007	0.040	12.38
5.4.16	0.010	0.038	12.38
5.4.15	0.013	0.046	12.38
5.4.14	0.008	0.039	12.07
5.4.13	0.008	0.044	12.05
5.4.12	0.006	0.041	12.02
5.4.11	0.005	0.039	12.01
5.4.10	0.008	0.036	12.01
5.4.9	0.006	0.038	12.01
5.4.8	0.005	0.039	12.01
5.4.7	0.007	0.034	12.00
5.4.6	0.006	0.035	12.01
5.4.5	0.004	0.038	12.01
5.4.4	0.004	0.038	12.00
5.4.3	0.004	0.040	11.99
5.4.2	0.007	0.035	11.99
5.4.1	0.012	0.043	11.99
5.4.0	0.007	0.040	11.48
5.3.28	0.004	0.044	12.71
5.3.27	0.006	0.042	12.72
5.3.26	0.011	0.036	12.72
5.3.25	0.007	0.044	12.72
5.3.24	0.007	0.039	12.72
5.3.23	0.008	0.042	12.71
5.3.22	0.005	0.042	12.68
5.3.21	0.011	0.040	12.68
5.3.20	0.007	0.042	12.68
5.3.19	0.008	0.043	12.68
5.3.18	0.005	0.045	12.67
5.3.17	0.005	0.042	12.66
5.3.16	0.007	0.039	12.68
5.3.15	0.013	0.049	12.68
5.3.14	0.008	0.038	12.66
5.3.13	0.004	0.043	12.66
5.3.12	0.006	0.042	12.66
5.3.11	0.010	0.038	12.65
5.3.10	0.010	0.038	12.12
5.3.9	0.011	0.048	12.09
5.3.8	0.006	0.040	12.07
5.3.7	0.010	0.049	12.07
5.3.6	0.008	0.039	12.06
5.3.5	0.007	0.039	12.00
5.3.4	0.011	0.037	12.00
5.3.3	0.012	0.045	11.95
5.3.2	0.008	0.048	11.73
5.3.1	0.011	0.045	11.70
5.3.0	0.007	0.050	11.68