1 files changed, 29 insertions, 0 deletions
diff --git a/src/web/helpers/ie.php b/src/web/helpers/ie.php
new file mode 100644
index 0000000..75e4015
--- /dev/null
+++ b/src/web/helpers/ie.php
@@ -0,0 +1,29 @@
+<?php /* Copyright (c) 2024 Freya Murphy */
+
+/// IE 5 though 8 support IE conditional comments
+/// IE 4 does not (need to fall back to user agent)
+
+$__ie_ver = FALSE;
+
+if (preg_match('/MSIE\s(?P<v>\d+)/i', @$_SERVER['HTTP_USER_AGENT'], $B)) {
+	$__ie_ver = $B['v'];
+}
+if ($__ie_ver == FALSE || $__ie_ver > 4) {
+	// ADD COND COMMENTS
+	define('IE_START', "<!--[if lt IE 8 ]>");
+	define('IE_END', "<![endif]-->");
+} else {
+	// IE4 DETECTED, DO NOT ADD COMMENTS
+	define('IE_START', '');
+	define('IE_END', '');
+}
+
+function ie(string $inner) {
+	return IE_START . $inner . IE_END;
+}
+
+function ie_ua(string $inner, int $ver) {
+	if ($GLOBALS['__ie_ver'] == $ver)
+		return $inner;
+	return '';
+}