Sample code for basic use of PHP extended hash module
php extensionhashSample code for basic module usage
<?php echo '<pre class="brush:php;toolbar:false">'; $algos = hash_algos(); //列出所有支持的hash算法 // print_r($algos); // ------------------------------------------------------ // 字符串hash $data = 'The quick brown fox jumped over the lazy dog.'; echo hash('md5', $data); //md5 哈希 $key = 'md5-key'; echo hash_hmac('md5', $data, $key); //使用 HMAC 方法生成带有密钥的哈希值 // ------------------------------------------------------ // 文件hash $file = 'hmac.txt'; echo hash_file('md5', $file); echo hash_hmac_file('md5', $file, $key); // ------------------------------------------------------ /** * @param $algo hash算法 * @param $data string|array 字符串或者字符串数组 * @param $options 进行哈希运算的可选设置,目前仅支持:HASH_HMAC。当指定此选项时,必须指定 key 参数 * @param $key 当 options 参数为 HASH_HMAC 时,使用此参数传入进行 HMAC 哈希运算时的共享密钥 */ function my_hash_data($algo, $data, $options = 0, $key = NULL) { // resource hash_init ( string $algo [, int $options = 0 [, string $key = NULL ]] ) $ctx = hash_init($algo, $options, $key); if(is_string($data)) { hash_update($ctx, $data); } else if(is_array($data)) { foreach($data as $s) { hash_update($ctx, $s); //填充数据, 可以多次调用, 和拼接字符串效果一样 } } return hash_final($ctx); //输出最后的数据 } // test code echo my_hash_data('md5', $data); // ------------------------------------------------------ /** * 文件类型 hash */ function my_hash_file($algo, $filename, $options = 0, $key = NULL) { $ctx = hash_init($algo, $options, $key); /* 两个函数的不同之处: 1. hash_update_stream 第二个参数是一个打开的文件句柄 2. hash_update_file 第二个参数是一个文件名 */ hash_update_file($ctx, $filename); return hash_final($ctx); } // test code echo my_hash_file('sha1', $file);
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