Updated installation, added links to troubleshooting

system/extensions/core.php

@@ -66,8 +66,6 @@ class YellowCore {
         $this->system->setDefault("coreSystemFile", "system.ini");
         $this->system->setDefault("coreTextFile", "text.ini");
         $this->system->setDefault("coreLogFile", "yellow.log");
-        $troubleshooting = "<a href=\"https://datenstrom.se/yellow/help/troubleshooting\">See troubleshooting</a>.";
-        extension_loaded("mbstring") || die("Datenstrom Yellow requires PHP mbstring extension! $troubleshooting");
     }
     
     public function __destruct() {
@@ -76,6 +74,9 @@ class YellowCore {
     
     // Handle initialisation
     public function load() {
+        $troubleshooting = "<a href=\"https://datenstrom.se/yellow/help/troubleshooting\">See troubleshooting</a>.";
+        extension_loaded("mbstring") || die("Datenstrom Yellow requires PHP mbstring extension! $troubleshooting");
+        version_compare(PHP_VERSION, "5.6", ">=") || die("Datenstrom Yellow requires PHP 5.6 or higher! $troubleshooting");
         if (defined("DEBUG") && DEBUG>=3) {
             $serverVersion = $this->toolbox->getServerVersion();
             echo "YellowCore::load Datenstrom Yellow ".YellowCore::VERSION.", PHP ".PHP_VERSION.", $serverVersion<br/>\n";

system/extensions/install.php

@@ -4,7 +4,7 @@
 // This file may be used and distributed under the terms of the public license.
 
 class YellowInstall {
-    const VERSION = "0.8.15";
+    const VERSION = "0.8.16";
     const TYPE = "feature";
     const PRIORITY = "1";
     public $yellow;                 //access to API
@@ -12,6 +12,9 @@ class YellowInstall {
     // Handle initialisation
     public function onLoad($yellow) {
         $this->yellow = $yellow;
+        $troubleshooting = "<a href=\"https://datenstrom.se/yellow/help/troubleshooting\">See troubleshooting</a>.";
+        extension_loaded("curl") || die("Datenstrom Yellow requires PHP cURL extension! $troubleshooting");
+        extension_loaded("zip") || die("Datenstrom Yellow requires PHP zip extension! $troubleshooting");
     }
     
     // Handle request
@@ -22,7 +25,7 @@ class YellowInstall {
             $troubleshooting = "<a href=\"https://datenstrom.se/yellow/help/troubleshooting\">See troubleshooting</a>.";
             $this->checkServerConfiguration($server) || die("Datenstrom Yellow requires $server configuration file! $troubleshooting");
             $this->checkServerRewrite($scheme, $address, $base, $location, $fileName) || die("Datenstrom Yellow requires $server rewrite module! $troubleshooting");
-            $this->checkServerAccess() || die("Datenstrom Yellow requires $server read/write access! $troubleshooting");
+            $this->checkServerAccess() || die("Datenstrom Yellow requires $server write access! $troubleshooting");
             $statusCode = $this->processRequestInstall($scheme, $address, $base, $location, $fileName);
         }
         return $statusCode;
@@ -290,7 +293,7 @@ class YellowInstall {
         return !empty($rawData) && $statusCode==200;
     }
     
-    // Check web server read/write access
+    // Check web server write access
     public function checkServerAccess() {
         $fileName = $this->yellow->system->get("coreSettingDir").$this->yellow->system->get("coreSystemFile");
         return $this->yellow->system->save($fileName, array());

yellow.php

@@ -3,7 +3,6 @@
 // Copyright (c) 2013-2020 Datenstrom, https://datenstrom.se
 // This file may be used and distributed under the terms of the public license.
 
-version_compare(PHP_VERSION, "5.6", ">=") || die("Datenstrom Yellow requires PHP 5.6 or higher!");
 require_once("system/extensions/core.php");
 
 if (PHP_SAPI!="cli") {