failed to update order

I moved the code to a newer version of php
and data is gettting added
but I keep on getting dialog box
'failed to update order'

is there a point of having this dialog box

<script>
			$("form#searchorderf").submit(function(){
			 	var inputs = [];
				$(\':input\', this).each(function() {
					inputs.push(this.name + \'=\' + escape(this.value));
				})
				// now if I join our inputs using \'&\' we\'ll have a query string
				jQuery.ajax({
					data: inputs.join(\'&\'),
					url: this.action,
					type: "POST",
					dataType: "html",
					timeout: 2000,
					error: function() {
					alert("Failed to update order");
					},
					success: function(r) {
						$("#ordersearcharea").empty();
						$("#ordersearcharea").append(r);
					}
				})
				return false;
			});
			</script>

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