The md5_file() function is an inbuilt function in PHP which is used to generate the md5 hash value of a given file. This function returns a string on success otherwise it returns FALSE.
Syntax:
md5_file( $file, $raw )
Parameters: This function accepts two parameters as mentioned above and described below.
- $file: It is a mandatory parameter which specifies the file for SHA1 hash.
- $raw: It is an optional parameter which specifies boolean values.
- TRUE – Raw 16 character binary format
- FALSE – By Default. 32 character long hex number.
Return Value: This function returns a string of MD5 hash on success and returns FALSE otherwise.
Supposed there is a file named “gfg.txt” which has below content:
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Below programs illustrate the md5_file() function:
Program 1:
<?php // PHP program to illustrate // md5_file() function $gfg = md5_file("gfg.txt"); echo $gfg; ?> |
Output:
1d4e50ae1992ad8adf2f7bb6ee4dd0cd
Program 2: With optional parameter $raw with different values TRUE and FALSE.
<?php // PHP program to illustrate // md5_file() function // Without optional parameter echo md5_file("gfg.txt") . "\n"; // with optional parameter $raw = FALSE (by default) // no changes in result echo md5_file("gfg.txt", FALSE) . "\n"; // with optional parameter $raw = TRUE // result changed echo md5_file("gfg.txt", TRUE) . "\n"; ?> |
Output:
1d4e50ae1992ad8adf2f7bb6ee4dd0cd
1d4e50ae1992ad8adf2f7bb6ee4dd0cd ????/{??M??
Reference: http://php.net/manual/en/function.md5-file.php
