Drop support for PHP < 5.6

.travis.yml

@@ -3,8 +3,6 @@ dist: trusty
 sudo: false
 
 php:
-  - '5.4'
-  - '5.5'
   - '5.6'
   - '7.0'
   - '7.1'

doc/02-Installation.md

@@ -14,9 +14,7 @@ chapter.
 
 * [Icinga 2](https://www.icinga.com/products/icinga-2/) with the IDO database backend (MySQL or PostgreSQL)
 * A web server, e.g. Apache or Nginx
-* PHP version >= 5.6.0. Though Icinga Web 2 version 2.5.x is compatible with PHP version >= 5.3.2 there are modules
-  which require a higher PHP version. Also, future versions of Icinga Web 2 will drop support for outdated PHP versions.
-  Packages for Icinga Web 2 already require PHP >= 5.6.0
+* PHP version >= 5.6.0
 * The following PHP modules must be installed: cURL, gettext, intl, mbstring, OpenSSL and xml
 * Default time zone configured for PHP in the php.ini file
 * LDAP PHP library when using Active Directory or LDAP for authentication

library/Icinga/Util/Json.php

@@ -54,11 +54,7 @@ class Json
      */
     protected static function encodeAndSanitize($value, $options, $depth, $autoSanitize)
     {
-        if (version_compare(phpversion(), '5.5.0', '<')) {
-            $encoded = json_encode($value, $options);
-        } else {
-            $encoded = json_encode($value, $options, $depth);
-        }
+        $encoded = json_encode($value, $options, $depth);
 
         switch (json_last_error()) {
             case JSON_ERROR_NONE:
@@ -72,7 +68,7 @@ class Json
                 // Fallthrough
 
             default:
-                throw new JsonEncodeException('%s: %s', static::lastErrorMsg(), var_export($value, true));
+                throw new JsonEncodeException('%s: %s', json_last_error_msg(), var_export($value, true));
         }
     }
 
@@ -92,39 +88,11 @@ class Json
         $decoded = json_decode($json, $assoc, $depth, $options);
 
         if (json_last_error() !== JSON_ERROR_NONE) {
-            throw new JsonDecodeException('%s: %s', static::lastErrorMsg(), var_export($json, true));
+            throw new JsonDecodeException('%s: %s', json_last_error_msg(), var_export($json, true));
         }
         return $decoded;
     }
 
-    /**
-     * {@link json_last_error_msg()} replacement for PHP < 5.5.0
-     *
-     * @return string
-     */
-    protected static function lastErrorMsg()
-    {
-        if (version_compare(PHP_VERSION, '5.5.0', '>=')) {
-            return json_last_error_msg();
-        }
-
-        // All possible error codes before PHP 5.5.0 (except JSON_ERROR_NONE)
-        switch (json_last_error()) {
-            case JSON_ERROR_DEPTH:
-                return 'Maximum stack depth exceeded';
-            case JSON_ERROR_STATE_MISMATCH:
-                return 'State mismatch (invalid or malformed JSON)';
-            case JSON_ERROR_CTRL_CHAR:
-                return 'Control character error, possibly incorrectly encoded';
-            case JSON_ERROR_SYNTAX:
-                return 'Syntax error';
-            case JSON_ERROR_UTF8:
-                return 'Malformed UTF-8 characters, possibly incorrectly encoded';
-            default:
-                return 'Unknown error';
-        }
-    }
-
     /**
      * Replace bad byte sequences in UTF-8 strings inside the given JSON-encodable structure with question marks
      *

modules/setup/application/locale/de_DE/LC_MESSAGES/setup.po

@@ -884,9 +884,9 @@ msgstr "Root DN"
 
 #: ../../../../modules/setup/library/Setup/WebWizard.php:556
 msgid ""
-"Running Icinga Web 2 requires PHP version 5.4."
+"Running Icinga Web 2 requires PHP version 5.6."
 msgstr ""
-"Der Betrieb von Icinga Web 2 erfordert die PHP-Version 5.4."
+"Der Betrieb von Icinga Web 2 erfordert die PHP-Version 5.6."
 
 #: ../../../../modules/setup/library/Setup/Steps/ResourceStep.php:104
 msgid "SSL Cert"

modules/setup/application/locale/it_IT/LC_MESSAGES/setup.po

@@ -862,9 +862,9 @@ msgstr "Root DN"
 
 #: /usr/share/icingaweb2/modules/setup/library/Setup/WebWizard.php:552
 msgid ""
-"Running Icinga Web 2 requires PHP version 5.4."
+"Running Icinga Web 2 requires PHP version 5.6."
 msgstr ""
-"Icinga Web 2 richiede PHP 5.4."
+"Icinga Web 2 richiede PHP 5.6."
 
 #: /usr/share/icingaweb2/modules/setup/library/Setup/WebWizard.php:356
 msgid "Setup Icinga Web 2"

modules/setup/library/Setup/WebWizard.php

@@ -568,10 +568,10 @@ class WebWizard extends Wizard implements SetupWizard
         $set = new RequirementSet();
 
         $set->add(new PhpVersionRequirement(array(
-            'condition'     => array('>=', '5.4'),
+            'condition'     => array('>=', '5.6'),
             'description'   => mt(
                 'setup',
-                'Running Icinga Web 2 requires PHP version 5.4.'
+                'Running Icinga Web 2 requires PHP version 5.6.'
             )
         )));
 

test/setup_vendor.sh

@@ -3,16 +3,10 @@
 set -ex
 
 ICINGAWEB_HOME=${ICINGAWEB_HOME:="$(dirname "$(readlink -f $(dirname "$0"))")"}
-PHP_VERSION="$(php -r 'echo phpversion();')"
 PHPCS_VERSION=${PHPCS_VERSION:=3.0.2}
 MOCKERY_VERSION=${MOCKERY_VERSION:=0.9.9}
 HAMCREST_VERSION=${HAMCREST_VERSION:=2.0.0}
-
-if [ "$PHP_VERSION" '<' 5.6.0 ]; then
-  PHPUNIT_VERSION=${PHPUNIT_VERSION:=4.8}
-else
-  PHPUNIT_VERSION=${PHPUNIT_VERSION:=5.7}
-fi
+PHPUNIT_VERSION=${PHPUNIT_VERSION:=5.7}
 
 cd ${ICINGAWEB_HOME}