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Summery Summery
Calculates and compares the MD5 of a file to its expected value.
Syntax Syntax
Parameters Parameters
- $filename
-
(Required) The filename to check the MD5 of.
- $expected_md5
-
(Required) The expected MD5 of the file, either a base64-encoded raw md5, or a hex-encoded md5.
Return Return
(bool|WP_Error) True on success, false when the MD5 format is unknown/unexpected, WP_Error on failure.
Source Source
File: wp-admin/includes/file.php
function verify_file_md5( $filename, $expected_md5 ) {
if ( 32 == strlen( $expected_md5 ) ) {
$expected_raw_md5 = pack( 'H*', $expected_md5 );
} elseif ( 24 == strlen( $expected_md5 ) ) {
$expected_raw_md5 = base64_decode( $expected_md5 );
} else {
return false; // Unknown format.
}
$file_md5 = md5_file( $filename, true );
if ( $file_md5 === $expected_raw_md5 ) {
return true;
}
return new WP_Error(
'md5_mismatch',
sprintf(
/* translators: 1: File checksum, 2: Expected checksum value. */
__( 'The checksum of the file (%1$s) does not match the expected checksum value (%2$s).' ),
bin2hex( $file_md5 ),
bin2hex( $expected_raw_md5 )
)
);
}
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Changelog Changelog
| Version | Description |
|---|---|
| 3.7.0 | Introduced. |