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WPDB: Check that `AUTH_SALT` is not empty, Fix a PHP notice when `AUTH_SALT` is undefined. 

Props jsonfry, mkomar, pento.
Merges [42119] and [42120] to the 4.5 branch.
Fixes #42431 and #42401 for 4.5.

Built from https://develop.svn.wordpress.org/branches/4.5@42233


git-svn-id: http://core.svn.wordpress.org/branches/4.5@42062 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Dion Hulse 2017-11-27 01:10:32 +00:00
parent 53e10c441b
commit 4d65d6de5b
1 changed files with 1 additions and 1 deletions
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wp-includes/wp-db.php
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@ -1898,7 +1898,7 @@ class wpdb {
// If ext/hash is not present, compat.php's hash_hmac() does not support sha256.
$algo = function_exists( 'hash' ) ? 'sha256' : 'sha1';
// Old WP installs may not have AUTH_SALT defined.
$salt = defined( 'AUTH_SALT' ) ? AUTH_SALT : rand();
$salt = defined( 'AUTH_SALT' ) && AUTH_SALT ? AUTH_SALT : (string) rand();
$placeholder = '{' . hash_hmac( $algo, uniqid( $salt, true ), $salt ) . '}';
}