rest_output_link_wp_head() WP 1.0

Outputs the REST API link tag into page header.

No Hooks.

Return

Nothing (null).

Usage

rest_output_link_wp_head();

Code of rest output link wp head: wp-includes/rest-api.php ^{WP 5.2.2}

<?php
function rest_output_link_wp_head() {
	$api_root = get_rest_url();

	if ( empty( $api_root ) ) {
		return;
	}

	echo "<link rel='https://api.w.org/' href='" . esc_url( $api_root ) . "' />\n";
}

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From tag: REST API