wp_ajax_wp_link_ajax() WordPress Function

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	Description
wp-includes/functions.php:wp_json_encode()	Encode a variable into JSON, with some sanity checks.
wp-includes/formatting.php:wp_unslash()	Removes slashes from a string or recursively removes slashes from strings within an array.
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.