WordPress at a glance
function is not described

_print_emoji_detection_script() WP 4.6.0

Prints inline Emoji detection script.

This is an internal function for using it by WP core itself. It's not recommended to use this function in your code.

Return

null. Nothing.

Usage

_print_emoji_detection_script();

Changelog

Since 4.6.0 Introduced.

Code of _print_emoji_detection_script() WP 5.7.2

<?php
function _print_emoji_detection_script() {
	$settings = array(
		/**
		 * Filters the URL where emoji png images are hosted.
		 *
		 * @since 4.2.0
		 *
		 * @param string $url The emoji base URL for png images.
		 */
		'baseUrl' => apply_filters( 'emoji_url', 'https://s.w.org/images/core/emoji/13.0.1/72x72/' ),

		/**
		 * Filters the extension of the emoji png files.
		 *
		 * @since 4.2.0
		 *
		 * @param string $extension The emoji extension for png files. Default .png.
		 */
		'ext'     => apply_filters( 'emoji_ext', '.png' ),

		/**
		 * Filters the URL where emoji SVG images are hosted.
		 *
		 * @since 4.6.0
		 *
		 * @param string $url The emoji base URL for svg images.
		 */
		'svgUrl'  => apply_filters( 'emoji_svg_url', 'https://s.w.org/images/core/emoji/13.0.1/svg/' ),

		/**
		 * Filters the extension of the emoji SVG files.
		 *
		 * @since 4.6.0
		 *
		 * @param string $extension The emoji extension for svg files. Default .svg.
		 */
		'svgExt'  => apply_filters( 'emoji_svg_ext', '.svg' ),
	);

	$version   = 'ver=' . get_bloginfo( 'version' );
	$type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/javascript"';

	if ( SCRIPT_DEBUG ) {
		$settings['source'] = array(
			/** This filter is documented in wp-includes/class.wp-scripts.php */
			'wpemoji' => apply_filters( 'script_loader_src', includes_url( "js/wp-emoji.js?$version" ), 'wpemoji' ),
			/** This filter is documented in wp-includes/class.wp-scripts.php */
			'twemoji' => apply_filters( 'script_loader_src', includes_url( "js/twemoji.js?$version" ), 'twemoji' ),
		);

		?>
		<script<?php echo $type_attr; ?>>
			window._wpemojiSettings = <?php echo wp_json_encode( $settings ); ?>;
			<?php readfile( ABSPATH . WPINC . '/js/wp-emoji-loader.js' ); ?>
		</script>
		<?php
	} else {
		$settings['source'] = array(
			/** This filter is documented in wp-includes/class.wp-scripts.php */
			'concatemoji' => apply_filters( 'script_loader_src', includes_url( "js/wp-emoji-release.min.js?$version" ), 'concatemoji' ),
		);

		/*
		 * If you're looking at a src version of this file, you'll see an "include"
		 * statement below. This is used by the `npm run build` process to directly
		 * include a minified version of wp-emoji-loader.js, instead of using the
		 * readfile() method from above.
		 *
		 * If you're looking at a build version of this file, you'll see a string of
		 * minified JavaScript. If you need to debug it, please turn on SCRIPT_DEBUG
		 * and edit wp-emoji-loader.js directly.
		 */
		?>
		<script<?php echo $type_attr; ?>>
			window._wpemojiSettings = <?php echo wp_json_encode( $settings ); ?>;
			!function(e,a,t){var n,r,o,i=a.createElement("canvas"),p=i.getContext&&i.getContext("2d");function s(e,t){var a=String.fromCharCode;p.clearRect(0,0,i.width,i.height),p.fillText(a.apply(this,e),0,0);e=i.toDataURL();return p.clearRect(0,0,i.width,i.height),p.fillText(a.apply(this,t),0,0),e===i.toDataURL()}function c(e){var t=a.createElement("script");t.src=e,t.defer=t.type="text/javascript",a.getElementsByTagName("head")[0].appendChild(t)}for(o=Array("flag","emoji"),t.supports={everything:!0,everythingExceptFlag:!0},r=0;r<o.length;r++)t.supports[o[r]]=function(e){if(!p||!p.fillText)return!1;switch(p.textBaseline="top",p.font="600 32px Arial",e){case"flag":return s([127987,65039,8205,9895,65039],[127987,65039,8203,9895,65039])?!1:!s([55356,56826,55356,56819],[55356,56826,8203,55356,56819])&&!s([55356,57332,56128,56423,56128,56418,56128,56421,56128,56430,56128,56423,56128,56447],[55356,57332,8203,56128,56423,8203,56128,56418,8203,56128,56421,8203,56128,56430,8203,56128,56423,8203,56128,56447]);case"emoji":return!s([55357,56424,8205,55356,57212],[55357,56424,8203,55356,57212])}return!1}(o[r]),t.supports.everything=t.supports.everything&&t.supports[o[r]],"flag"!==o[r]&&(t.supports.everythingExceptFlag=t.supports.everythingExceptFlag&&t.supports[o[r]]);t.supports.everythingExceptFlag=t.supports.everythingExceptFlag&&!t.supports.flag,t.DOMReady=!1,t.readyCallback=function(){t.DOMReady=!0},t.supports.everything||(n=function(){t.readyCallback()},a.addEventListener?(a.addEventListener("DOMContentLoaded",n,!1),e.addEventListener("load",n,!1)):(e.attachEvent("onload",n),a.attachEvent("onreadystatechange",function(){"complete"===a.readyState&&t.readyCallback()})),(n=t.source||{}).concatemoji?c(n.concatemoji):n.wpemoji&&n.twemoji&&(c(n.twemoji),c(n.wpemoji)))}(window,document,window._wpemojiSettings);
		</script>
		<?php
	}
}