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@andrewmclagan
Forked from matzeeable/is_rest.php
Created September 5, 2019 11:05
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Checks if the current request is a WP REST API request.
<?php
if ( !function_exists( 'is_rest' ) ) {
/**
* Checks if the current request is a WP REST API request.
*
* Case #1: After WP_REST_Request initialisation
* Case #2: Support "plain" permalink settings
* Case #3: It can happen that WP_Rewrite is not yet initialized,
* so do this (wp-settings.php)
* Case #4: URL Path begins with wp-json/ (your REST prefix)
* Also supports WP installations in subfolders
*
* @returns boolean
* @author matzeeable
*/
function is_rest() {
$prefix = rest_get_url_prefix( );
if (defined('REST_REQUEST') && REST_REQUEST // (#1)
|| isset($_GET['rest_route']) // (#2)
&& strpos( trim( $_GET['rest_route'], '\\/' ), $prefix , 0 ) === 0)
return true;
// (#3)
global $wp_rewrite;
if ($wp_rewrite === null) $wp_rewrite = new WP_Rewrite();
// (#4)
$rest_url = wp_parse_url( trailingslashit( rest_url( ) ) );
$current_url = wp_parse_url( add_query_arg( array( ) ) );
return strpos( $current_url['path'], $rest_url['path'], 0 ) === 0;
}
}
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