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You can view the full source code for imagecolorallocatefromstring.php below.
imagecolorallocatefromstring.php
<?php
/**
* Imagecolorallocatefromstring v2.0.0
*
* Copyright (c) 2018-2026 Andrew G. Johnson <andrew@andrewgjohnson.com>
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
* documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
* Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* PHP version 8
*
* As of v2.0.0 imagecolorallocatefromstring is part of AgjGd (https://agjgd.org). The implementation now lives in the
* \AndrewGJohnson\AgjGd class provided by the andrewgjohnson/agjgd package, and the global
* imagecolorallocatefromstring() function below is a thin reverse-compatibility wrapper that forwards to it.
*
* Please use \AndrewGJohnson\AgjGd::imagecolorallocatefromstring() rather than imagecolorallocatefromstring().
*
* This file deliberately does not declare strict_types so that loosely-typed calls written against the standalone
* function keep coercing their arguments the way they always did.
*
* @category Andrewgjohnson
* @package Imagecolorallocatefromstring
* @author Andrew G. Johnson <andrew@andrewgjohnson.com>
* @copyright 2018-2026 Andrew G. Johnson <andrew@andrewgjohnson.com>
* @license https://opensource.org/licenses/mit/ The MIT License
* @link https://github.com/andrewgjohnson/imagecolorallocatefromstring
*/
use AndrewGJohnson\AgjGd;
if (!function_exists('imagecolorallocatefromstring')) {
/**
* This function exists to support reverse compatibility.
*
* @deprecated 2.0.0 Use \AndrewGJohnson\AgjGd::imagecolorallocatefromstring() instead.
*
* @param \GdImage $image A GdImage object.
* @param string $string A string describing the color.
* @param ?int $alpha A value between 0 and 127.
*
* @throws \InvalidArgumentException If the $string or $alpha parameter is invalid.
*
* @return int|false Returns a color identifier or FALSE if the allocation failed.
*/
function imagecolorallocatefromstring(
$image,
$string,
$alpha = 0
) {
return AgjGd::imagecolorallocatefromstring(
$image,
$string,
$alpha ?? 0
);
}
}