diff --git a/ext/intl/tests/bug62070_3.phpt b/ext/intl/tests/bug62070_3.phpt
index 08c1bbf45f8b..60e0593acfd3 100644
--- a/ext/intl/tests/bug62070_3.phpt
+++ b/ext/intl/tests/bug62070_3.phpt
@@ -4,6 +4,7 @@ Bug #62070: Collator::getSortKey() returns garbage
 intl
 --SKIPIF--
 <?php if (version_compare(INTL_ICU_VERSION, '62.1') < 0) die('skip for ICU >= 62.1'); ?>
+<?php if (version_compare(INTL_ICU_VERSION, '76.1') >=  0) die('skip for ICU < 76.1'); ?>
 --FILE--
 <?php
 $s1 = 'Hello';
diff --git a/ext/intl/tests/bug62070_icu76_1.phpt b/ext/intl/tests/bug62070_icu76_1.phpt
new file mode 100644
index 000000000000..6071679b6b31
--- /dev/null
+++ b/ext/intl/tests/bug62070_icu76_1.phpt
@@ -0,0 +1,17 @@
+--TEST--
+Bug #62070: Collator::getSortKey() returns garbage
+--EXTENSIONS--
+intl
+--SKIPIF--
+<?php if (version_compare(INTL_ICU_VERSION, '76.1') < 0) die('skip for ICU >= 76.1'); ?>
+--FILE--
+<?php
+$s1 = 'Hello';
+
+$coll = collator_create('en_US');
+$res = collator_get_sort_key($coll, $s1);
+
+echo urlencode($res);
+?>
+--EXPECT--
+93AAG%01%09%01%DC%08
diff --git a/ext/intl/tests/collator_get_sort_key_variant7.phpt b/ext/intl/tests/collator_get_sort_key_variant7.phpt
index 44be0bea3fd6..f342a413be5c 100644
--- a/ext/intl/tests/collator_get_sort_key_variant7.phpt
+++ b/ext/intl/tests/collator_get_sort_key_variant7.phpt
@@ -4,6 +4,7 @@ collator_get_sort_key() icu >= 62.1
 intl
 --SKIPIF--
 <?php if (version_compare(INTL_ICU_VERSION, '62.1') < 0) die('skip for ICU >= 62.1'); ?>
+<?php if (version_compare(INTL_ICU_VERSION, '76.1') >=  0) die('skip for ICU < 76.1'); ?>
 --FILE--
 <?php
 
diff --git a/ext/intl/tests/collator_get_sort_key_variant_icu76_1.phpt b/ext/intl/tests/collator_get_sort_key_variant_icu76_1.phpt
new file mode 100644
index 000000000000..8c000c309403
--- /dev/null
+++ b/ext/intl/tests/collator_get_sort_key_variant_icu76_1.phpt
@@ -0,0 +1,97 @@
+--TEST--
+collator_get_sort_key() icu >= 62.1
+--EXTENSIONS--
+intl
+--SKIPIF--
+<?php if (version_compare(INTL_ICU_VERSION, '76.1') < 0) die('skip for ICU >= 76.1'); ?>
+--FILE--
+<?php
+
+/*
+ * Get sort keys using various locales
+ */
+function sort_arrays( $locale, $data )
+{
+    $res_str = '';
+
+    $coll = ut_coll_create( $locale );
+
+    foreach($data as $value) {
+        $res_val = ut_coll_get_sort_key( $coll, $value );
+        $res_str .= "source: ".$value."\n".
+                    "key: ".bin2hex($res_val)."\n";
+    }
+
+    return $res_str;
+}
+
+
+function ut_main()
+{
+    $res_str = '';
+
+    // Regular strings keys
+    $test_params = array(
+        'abc', 'abd', 'aaa',
+        'аа', 'а', 'z',
+        '', '3',
+        'y'  , 'i'  , 'k'
+    );
+
+    $res_str .= sort_arrays( 'en_US', $test_params );
+
+    // Sort a non-ASCII array using ru_RU locale.
+    $test_params = array(
+        'абг', 'абв', 'жжж', 'эюя'
+    );
+
+    $res_str .= sort_arrays( 'ru_RU', $test_params );
+
+    // Sort an array using Lithuanian locale.
+    $res_str .= sort_arrays( 'lt_LT', $test_params );
+
+    return $res_str . "\n";
+}
+
+include_once( 'ut_common.inc' );
+ut_run();
+?>
+--EXPECT--
+source: abc
+key: 2b2d2f01070107
+source: abd
+key: 2b2d3101070107
+source: aaa
+key: 2b2b2b01070107
+source: аа
+key: 62060601060106
+source: а
+key: 620601050105
+source: z
+key: 5d01050105
+source: 
+key: 0101
+source: 3
+key: 1801050105
+source: y
+key: 5b01050105
+source: i
+key: 3b01050105
+source: k
+key: 3f01050105
+source: абг
+key: 28060c1001070107
+source: абв
+key: 28060c0e01070107
+source: жжж
+key: 282c2c2c01070107
+source: эюя
+key: 28eef0f401070107
+source: абг
+key: 62060c1001070107
+source: абв
+key: 62060c0e01070107
+source: жжж
+key: 622c2c2c01070107
+source: эюя
+key: 62eef0f401070107
diff --git a/ext/intl/tests/locale_get_display_name8.phpt b/ext/intl/tests/locale_get_display_name8.phpt
index b6b855c6d8ec..e8c1ed958ac1 100644
--- a/ext/intl/tests/locale_get_display_name8.phpt
+++ b/ext/intl/tests/locale_get_display_name8.phpt
@@ -317,14 +317,14 @@ disp_locale=fr :  display_name=anglais #États-Unis, attribute=islamcal#
 disp_locale=de :  display_name=Englisch #Vereinigte Staaten, attribute=islamcal#
 -----------------
 locale='zh-CN-a-myExt-x-private'
-disp_locale=en :  display_name=Chinese #China, a=myext, Private-Use=private#
-disp_locale=fr :  display_name=chinois #Chine, a=myext, usage privé=private#
-disp_locale=de :  display_name=Chinesisch #China, a=myext, Privatnutzung=private#
+disp_locale=en :  display_name=Chinese #China(, A_MYEXT_X_PRIVATE)?, a=myext, Private-Use=private#
+disp_locale=fr :  display_name=chinois #Chine(, A_MYEXT_X_PRIVATE)?, a=myext, usage privé=private#
+disp_locale=de :  display_name=Chinesisch #China(, A_MYEXT_X_PRIVATE)?, a=myext, Privatnutzung=private#
 -----------------
 locale='en-a-myExt-b-another'
-disp_locale=en :  display_name=English #a=myext, b=another#
-disp_locale=fr :  display_name=anglais #a=myext, b=another#
-disp_locale=de :  display_name=Englisch #a=myext, b=another#
+disp_locale=en :  display_name=English #(A_MYEXT_B_ANOTHER, )?a=myext, b=another#
+disp_locale=fr :  display_name=anglais #(A_MYEXT_B_ANOTHER, )?a=myext, b=another#
+disp_locale=de :  display_name=Englisch #(A_MYEXT_B_ANOTHER, )?a=myext, b=another#
 -----------------
 locale='de-419-DE'
 disp_locale=en :  display_name=German #Latin America, DE#
@@ -337,7 +337,7 @@ disp_locale=fr :  display_name=a #Allemagne#
 disp_locale=de :  display_name=a #Deutschland#
 -----------------
 locale='ar-a-aaa-b-bbb-a-ccc'
-disp_locale=en :  display_name=Arabic #a=aaa, b=bbb#
-disp_locale=fr :  display_name=arabe #a=aaa, b=bbb#
-disp_locale=de :  display_name=Arabisch #a=aaa, b=bbb#
+disp_locale=en :  display_name=Arabic #(A_AAA_B_BBB_A_CCC, )?a=aaa, b=bbb#
+disp_locale=fr :  display_name=arabe #(A_AAA_B_BBB_A_CCC, )?a=aaa, b=bbb#
+disp_locale=de :  display_name=Arabisch #(A_AAA_B_BBB_A_CCC, )?a=aaa, b=bbb#
 -----------------
diff --git a/ext/intl/tests/locale_get_display_variant2.phpt b/ext/intl/tests/locale_get_display_variant2.phpt
index a743ed5ea3b8..e56154902dde 100644
--- a/ext/intl/tests/locale_get_display_variant2.phpt
+++ b/ext/intl/tests/locale_get_display_variant2.phpt
@@ -248,14 +248,14 @@ disp_locale=fr :  display_variant=
 disp_locale=de :  display_variant=
 -----------------
 locale='zh-CN-a-myExt-x-private'
-disp_locale=en :  display_variant=
-disp_locale=fr :  display_variant=
-disp_locale=de :  display_variant=
+disp_locale=en :  display_variant=(A_MYEXT_X_PRIVATE)?
+disp_locale=fr :  display_variant=(A_MYEXT_X_PRIVATE)?
+disp_locale=de :  display_variant=(A_MYEXT_X_PRIVATE)?
 -----------------
 locale='en-a-myExt-b-another'
-disp_locale=en :  display_variant=(MYEXT_B_ANOTHER)?
-disp_locale=fr :  display_variant=(MYEXT_B_ANOTHER)?
-disp_locale=de :  display_variant=(MYEXT_B_ANOTHER)?
+disp_locale=en :  display_variant=((A_)?MYEXT_B_ANOTHER)?
+disp_locale=fr :  display_variant=((A_)?MYEXT_B_ANOTHER)?
+disp_locale=de :  display_variant=((A_)?MYEXT_B_ANOTHER)?
 -----------------
 locale='de-419-DE'
 disp_locale=en :  display_variant=DE
@@ -268,7 +268,7 @@ disp_locale=fr :  display_variant=
 disp_locale=de :  display_variant=
 -----------------
 locale='ar-a-aaa-b-bbb-a-ccc'
-disp_locale=en :  display_variant=(AAA_B_BBB_A_CCC)?
-disp_locale=fr :  display_variant=(AAA_B_BBB_A_CCC)?
-disp_locale=de :  display_variant=(AAA_B_BBB_A_CCC)?
+disp_locale=en :  display_variant=((A_)?AAA_B_BBB_A_CCC)?
+disp_locale=fr :  display_variant=((A_)?AAA_B_BBB_A_CCC)?
+disp_locale=de :  display_variant=((A_)?AAA_B_BBB_A_CCC)?
 -----------------
diff --git a/ext/intl/tests/timezone_IDforWindowsID_basic2.phpt b/ext/intl/tests/timezone_IDforWindowsID_basic2.phpt
index aeb9b1689915..60e6f73e3797 100644
--- a/ext/intl/tests/timezone_IDforWindowsID_basic2.phpt
+++ b/ext/intl/tests/timezone_IDforWindowsID_basic2.phpt
@@ -4,6 +4,7 @@ IntlTimeZone::getIDForWindowsID basic test
 intl
 --SKIPIF--
 <?php if (version_compare(INTL_ICU_VERSION, '58.1') < 0) die('skip for ICU >= 58.1'); ?>
+<?php if (version_compare(INTL_ICU_VERSION, '76.1') >= 0) die('skip for ICU <= 76.1'); ?>
 --FILE--
 <?php
 
diff --git a/ext/intl/tests/timezone_IDforWindowsID_basic_icu76_1.phpt b/ext/intl/tests/timezone_IDforWindowsID_basic_icu76_1.phpt
new file mode 100644
index 000000000000..96de341974b1
--- /dev/null
+++ b/ext/intl/tests/timezone_IDforWindowsID_basic_icu76_1.phpt
@@ -0,0 +1,44 @@
+--TEST--
+IntlTimeZone::getIDForWindowsID basic test
+--EXTENSIONS--
+intl
+--SKIPIF--
+<?php if (version_compare(INTL_ICU_VERSION, '76.1') < 0) die('skip for ICU >= 76.1'); ?>
+--FILE--
+<?php
+
+$tzs = array(
+  'Gnomeregan' => array(NULL),
+  'India Standard Time' => array(NULL),
+  'Pacific Standard Time' => array('001', 'CA', 'MX', 'US', 'ZZ'),
+  'Romance Standard Time' => array('001', 'BE', 'DK', 'ES', 'FR'),
+);
+
+foreach ($tzs as $tz => $regions) {
+  echo "** $tz\n";
+  foreach ($regions as $region) {
+    var_dump(IntlTimeZone::getIDForWindowsID($tz, $region));
+    if (intl_get_error_code() != U_ZERO_ERROR) {
+      echo "Error: ", intl_get_error_message(), "\n";
+    }
+  }
+}
+?>
+--EXPECTF--
+** Gnomeregan
+bool(false)
+Error: %snknown windows timezone: U_ILLEGAL_ARGUMENT_ERROR
+** India Standard Time
+string(13) "Asia/Calcutta"
+** Pacific Standard Time
+string(19) "America/Los_Angeles"
+string(17) "America/Vancouver"
+string(19) "America/Los_Angeles"
+string(19) "America/Los_Angeles"
+string(19) "America/Los_Angeles"
+** Romance Standard Time
+string(12) "Europe/Paris"
+string(15) "Europe/Brussels"
+string(17) "Europe/Copenhagen"
+string(13) "Europe/Madrid"
+string(12) "Europe/Paris"