PHP md5 encryption function reference detailed explanation_PHP tutorial

Many PHP developers will use this md() encryption function, but some friends may not know the reference. Today we will take a look at the parameters of the md5() function.

Grammar
md5(string,raw)

md5() function calculates the MD5 hash of a string

string required. Specifies the string to be calculated

charlist

Optional. Specify hexadecimal or binary output format:
TRUE - raw 16 character binary format
FALSE - Default. 32 character hexadecimal number
Note: This parameter was added in PHP 5.0.

The code is as follows

代码如下	复制代码
$str ="123456"; echo 'md5 16位'.md5($str,true); //输出乱码 //如果你想得到php5中md5( "abc ",   true)这样的返回值，那么可以： function   bin_md5($val)   {     return   pack( "H32 ",md5($val)); }   echo ' md5 32位'.md5($str); //10adc3949ba59abbe56e057f20f883e ?>

Copy code

$str ="123456";

echo 'md5 16-bit'.md5($str,true);

//Output garbled characters //If you want to get the return value of md5("abc", true) in php5, then you can: function bin_md5($val) { Return pack( "H32 ",md5($val)); } echo '
md5 32-bit'.md5($str); //10adc3949ba59abbe56e057f20f883e

?>

http://www.bkjia.com/PHPjc/629695.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629695.htmlTechArticleMany PHP developers will use this md() encryption function, but some friends may not know the reference. Today Let's take a look at the parameters of the md5() function. Syntax md5(string,raw) md5() function...