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Database: Hardening to bring wpdb::prepare() inline with documentation.

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`wpdb::prepare()` supports %s, %d, and %F as placeholders in the query string. Any other non-escaped % will be escaped.

Merges [41496] to 3.9 branch.


Built from https://develop.svn.wordpress.org/branches/3.9@41506


git-svn-id: http://core.svn.wordpress.org/branches/3.9@41339 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Aaron Campbell 2017-09-19 18:43:15 +00:00
parent 30570f494f
commit f6afa94bef
1 changed files with 1 additions and 0 deletions
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wp-includes/wp-db.php
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@ -1216,6 +1216,7 @@ class wpdb {
$query = str_replace( '"%s"', '%s', $query ); // doublequote unquoting
$query = preg_replace( '|(?<!%)%f|' , '%F', $query ); // Force floats to be locale unaware
$query = preg_replace( '|(?<!%)%s|', "'%s'", $query ); // quote the strings, avoiding escaped strings like %%s
$query = preg_replace( '/%(?:%|$|([^dsF]))/', '%%\\1', $query ); // escape any unescaped percents
array_walk( $args, array( $this, 'escape_by_ref' ) );
return @vsprintf( $query, $args );
}