compression_test

Source code

function compression_test() {

?>

	<script type="text/javascript">

	/* <![CDATA[ */

	var testCompression = {

		get : function(test) {

			var x;

			if ( window.XMLHttpRequest ) {

				x = new XMLHttpRequest();

			} else {

				try{x=new ActiveXObject('Msxml2.XMLHTTP');}catch(e){try{x=new ActiveXObject('Microsoft.XMLHTTP');}catch(e){};}

			}



			if (x) {

				x.onreadystatechange = function() {

					var r, h;

					if ( x.readyState == 4 ) {

						r = x.responseText.substr(0, 18);

						h = x.getResponseHeader('Content-Encoding');

						testCompression.check(r, h, test);

					}

				}



				x.open('GET', ajaxurl + '?action=wp-compression-test&test='+test+'&'+(new Date()).getTime(), true);

				x.send('');

			}

		},



		check : function(r, h, test) {

			if ( ! r && ! test )

				this.get(1);



			if ( 1 == test ) {

				if ( h && ( h.match(/deflate/i) || h.match(/gzip/i) ) )

					this.get('no');

				else

					this.get(2);



				return;

			}



			if ( 2 == test ) {

				if ( '"wpCompressionTest' == r )

					this.get('yes');

				else

					this.get('no');

			}

		}

	};

	testCompression.check();

	/* ]]> */

	</script>

<?php

}