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<?php |
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/** |
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* Class Base64 |
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* @link https://www.icy2003.com/ |
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* @author icy2003 <[email protected]> |
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* @copyright Copyright (c) 2017, icy2003 |
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*/ |
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namespace icy2003\php\ihelpers; |
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use icy2003\php\icomponents\file\LocalFile; |
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/** |
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* Base64 相关 |
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*/ |
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class Base64 |
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{ |
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/** |
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* 判断字符串是否是 base64 字符串 |
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* |
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* @param string $string |
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* |
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* @return boolean |
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* |
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* @test icy2003\php\tests\ihelpers\Base64Test::testIsBase64 |
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*/ |
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public static function isBase64($string) |
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{ |
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return $string == base64_encode(base64_decode($string)); |
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} |
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/** |
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* base64 编码 |
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* |
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* @param string $string 字符串 |
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* |
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* @return string |
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*/ |
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public static function encode($string) |
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{ |
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return base64_encode($string); |
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} |
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/** |
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* base64 解码 |
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* |
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* - 如果给的不是 base64 字符串，则返回 false |
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* |
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* @param string $string base64 字符串 |
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* |
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* @return string|boolean |
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*/ |
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public static function decode($string) |
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{ |
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return self::isBase64($string) ? base64_decode($string) : false; |
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} |
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/** |
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* 文件转成 base64 字符串 |
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* |
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* @param string $file 文件路径 |
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* |
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* @return string|boolean |
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* |
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* @test icy2003\php\tests\ihelpers\Base64Test::testFromFile |
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*/ |
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public static function fromFile($file) |
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{ |
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$base64 = false; |
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$local = new LocalFile(); |
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$local->isFile($file) && $base64 = base64_encode($local->getFileContent($file)); |
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return $base64; |
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} |
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/** |
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* base64 字符串转成文件 |
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* |
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* @param string $string base64 字符串 |
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* @param string $file 文件路径 |
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* |
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* @return boolean |
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* |
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* @test icy2003\php\tests\ihelpers\Base64Test::testToFile |
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*/ |
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public static function toFile($string, $file = null) |
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{ |
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null === $file && $file = './Base64_toFile_' . date('YmdHis') . '.txt'; |
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return (bool) file_put_contents($file, base64_decode($string)); |
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} |
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} |
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icy2003 /
php
