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wp_ajax_wp_link_ajax()

Ajax handler for internal linking.

Source

File: wp-admin/includes/ajax-actions.php 

function wp_ajax_wp_link_ajax() {
	check_ajax_referer( 'internal-linking', '_ajax_linking_nonce' );

	$args = array();

	if ( isset( $_POST['search'] ) ) {
		$args['s'] = wp_unslash( $_POST['search'] );
	}

	if ( isset( $_POST['term'] ) ) {
		$args['s'] = wp_unslash( $_POST['term'] );
	}

	$args['pagenum'] = ! empty( $_POST['page'] ) ? absint( $_POST['page'] ) : 1;

	if ( ! class_exists( '_WP_Editors', false ) ) {
		require ABSPATH . WPINC . '/class-wp-editor.php';
	}

	$results = _WP_Editors::wp_link_query( $args );

	if ( ! isset( $results ) ) {
		wp_die( 0 );
	}

	echo wp_json_encode( $results );
	echo "\n";

	wp_die();
}

Uses

Uses Description
wp-includes/functions.php: wp_json_encode()

Encode a variable into JSON, with some sanity checks.
wp-includes/formatting.php: wp_unslash()

Remove slashes from a string or array of strings.
wp-includes/pluggable.php: check_ajax_referer()

Verifies the Ajax request to prevent processing requests external of the blog.
wp-includes/functions.php: absint()

Convert a value to non-negative integer.
wp-includes/functions.php: wp_die()

Kills WordPress execution and displays HTML page with an error message.
wp-includes/class-wp-editor.php: _WP_Editors::wp_link_query()

Performs post queries for internal linking.

Changelog

Version Description
3.1.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_ajax_wp_link_ajax