sizeof bug

sizeof cannot be used to test existance.

Fixes: Got error 'PHP message: PHP Warning:  sizeof(): Parameter must be
an array or an object that implements Countable in
/.../include/items.php on line 66\n':  1 Time(s)

PHP 7.2.5 / Ubuntu 17.04 LTS

include/items.php

@@ -29,7 +29,7 @@ function add_page_info_data($data, $no_photos = false) {
 	// It maybe is a rich content, but if it does have everything that a link has,
 	// then treat it that way
 	if (($data["type"] == "rich") && is_string($data["title"]) &&
-		is_string($data["text"]) && (sizeof($data["images"]) > 0)) {
+		is_string($data["text"]) && !empty($data["images"])) {
 		$data["type"] = "link";
 	}
 
@@ -63,7 +63,7 @@ function add_page_info_data($data, $no_photos = false) {
 		$text .= " title='".$data["title"]."'";
 	}
 
-	if (sizeof($data["images"]) > 0) {
+	if (!empty($data["images"])) {
 		$preview = str_replace(["[", "]"], ["[", "]"], htmlentities($data["images"][0]["src"], ENT_QUOTES, 'UTF-8', false));
 		// if the preview picture is larger than 500 pixels then show it in a larger mode
 		// But only, if the picture isn't higher than large (To prevent huge posts)