1 <?php

     1 <?php

     2 /**

     2 /**

     4  * for using the new PHP 7 random_* API in PHP 5 projects

     4  * for using the new PHP 7 random_* API in PHP 5 projects

     6  * The MIT License (MIT)

     6  * The MIT License (MIT)

     7  *

     7  *

    10  * Permission is hereby granted, free of charge, to any person obtaining a copy

    10  * Permission is hereby granted, free of charge, to any person obtaining a copy

    11  * of this software and associated documentation files (the "Software"), to deal

    11  * of this software and associated documentation files (the "Software"), to deal

    12  * in the Software without restriction, including without limitation the rights

    12  * in the Software without restriction, including without limitation the rights

    13  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

    13  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

    14  * copies of the Software, and to permit persons to whom the Software is

    14  * copies of the Software, and to permit persons to whom the Software is

    15  * furnished to do so, subject to the following conditions:

    15  * furnished to do so, subject to the following conditions:

    17  * The above copyright notice and this permission notice shall be included in

    17  * The above copyright notice and this permission notice shall be included in

    18  * all copies or substantial portions of the Software.

    18  * all copies or substantial portions of the Software.

    20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

    20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

    21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

    21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

    22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

    22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

    23  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

    23  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

    24  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

    24  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

    40      * @return string

    40      * @return string

    41      */

    41      */

    42     function random_bytes($bytes)

    42     function random_bytes($bytes)

    43     {

    43     {

    44         try {

    44         try {

    45             $bytes = RandomCompat_intval($bytes);

    46             $bytes = RandomCompat_intval($bytes);

    46         } catch (TypeError $ex) {

    47         } catch (TypeError $ex) {

    47             throw new TypeError(

    48             throw new TypeError(

    48                 'random_bytes(): $bytes must be an integer'

    49                 'random_bytes(): $bytes must be an integer'

    49             );

    50             );

    53             throw new Error(

    54             throw new Error(

    54                 'Length must be greater than 0'

    55                 'Length must be greater than 0'

    55             );

    56             );

    56         }

    57         }

    57 

    58 

    59         if (

    61         if (

    62             RandomCompat_strlen($buf) === $bytes

    64             RandomCompat_strlen($buf) === $bytes

    63         ) {

    65         ) {

    64             /**

    66             /**

    65              * Return our random entropy buffer here:

    67              * Return our random entropy buffer here:

    66              */

    68              */