Make setlocale skipifs musl-compatible

Author: nikic

ext/standard/tests/strings/setlocale_skipif.inc

@@ -0,0 +1,10 @@
+<?php
+function require_locale(int $category, ...$locales) {
+    if (setlocale($category, "This locale definitely does not exist")) {
+        die("skip Cannot determine available locales");
+    }
+    if (!setlocale($category, ...$locales)) {
+        $localesStr = implode(", ", $locales);
+        die("skip Locales not available: $localesStr");
+    }
+}

ext/standard/tests/strings/setlocale_variation1.phpt

@@ -5,9 +5,8 @@ Test setlocale() function : usage variations - passing multiple valid/invalid lo
 if (substr(PHP_OS, 0, 3) == 'WIN') {
     die('skip Not valid for windows');
 }
-if (setlocale(LC_ALL, "en_US.utf8", "Ko_KR.utf8", "zh_CN.utf8") === false) {
-    die('skip en_US.utf8/Ko_KR.utf8/zh_CN.utf8 locales not available');
-}
+require __DIR__ . '/setlocale_skipif.inc';
+require_locale(LC_ALL, "en_US.utf8", "Ko_KR.utf8", "zh_CN.utf8");
 ?>
 --FILE--
 <?php

ext/standard/tests/strings/setlocale_variation3.phpt

@@ -5,9 +5,8 @@ Test setlocale() function : usage variations - setting system locale = 0
 if (substr(PHP_OS, 0, 3) == 'WIN') {
     die('skip Not valid for windows');
 }
-if (setlocale(LC_ALL,'en_US.utf8') === false) {
-    die('skip en_US.utf8 locale not available');
-}
+require __DIR__ . '/setlocale_skipif.inc';
+require_locale(LC_ALL, 'en_US.utf8');
 ?>
 --FILE--
 <?php

ext/standard/tests/strings/strtoupper.phpt

@@ -2,9 +2,8 @@
 Test strtoupper on non-ASCII characters
 --SKIPIF--
 <?php
-if (!setlocale(LC_CTYPE, "de_DE", "de", "german", "ge", "de_DE.ISO8859-1", "ISO8859-1")) {
-        die("skip locale needed for this test is not supported on this platform");
-}
+require __DIR__ . '/setlocale_skipif.inc';
+require_locale(LC_CTYPE, "de_DE", "de", "german", "ge", "de_DE.ISO8859-1", "ISO8859-1");
 ?>
 --FILE--
 <?php