Function Reference/sanitize sql orderby

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1 Description
2 Usage
3 Parameters
4 Return Values
5 Examples
6 Notes
7 Change Log
8 Source File
9 Related
- 9.1 Functions
- 9.2 Filters

Description

Ensures a string is a valid SQL order by clause.

Accepts one or more columns, with or without ASC/DESC, and also accepts RAND().

Usage

<?php sanitize_sql_orderby( $orderby ); ?>

Parameters

$orderby

(string) (required) Order by string to be checked.

Default: None

Return Values

(string | boolean): Returns the order by clause if it is a match, false otherwise.

Examples

<?php

/* These will return the same string as passed in, because they pass sanitization */
sanitize_sql_orderby( "title" );
sanitize_sql_orderby( "title ASC" );
sanitize_sql_orderby( "title DESC" );
sanitize_sql_orderby( "title DESC, slug ASC" );
sanitize_sql_orderby( "`title` DESC, `slug` ASC" );

/* This will return false: */
sanitize_sql_orderby( "WHERE 1=1" );

Notes

Change Log

Since: 2.5.1

Source File

sanitize_sql_orderby() is located in /wp-includes/formatting.php.

Functions

sanitize_sql_orderby() is in a class of functions that help you sanitize potentially unsafe data which allow you to pass an arbitrary variable and receive the clean version based on data type. Others include:

Codex