Lift PHP requirement up from 5.4 to 5.5

documentation/changelog.html

@@ -69,6 +69,7 @@
     </ul>
     <h3>Possibly breaking changes</h3>
       <ul>
+        <li>Dropped support for PHP 5.4 and inferior (now REQUIRES PHP 5.5 or more)</li>
         <li>As Chamilo becomes more popular, we are facing new security-based challenges that come as consequences of the simplicity
             that we offer our users. As such, in this version of Chamilo, the administrator *must* enable a configuration setting as follows
             in order <b>to authorize teachers and students to use iframes</b> (embedding things from outside) inside the online text areas in their courses and personal spaces.

documentation/dependencies.html

@@ -71,7 +71,7 @@ We recommend using HTML5-compatible technology.
 <h2>Dependencies - server-side</h2>
 <ul>
   <li>Apache 2+</li>
-  <li> PHP 5.4 or higher with MySQL bindings (mysqlnd is recommended) and php-gd extension to allow Chamilo to resize pictures. Now also supports PHP 7.0</li>
+  <li> PHP 5.5 or higher with MySQL bindings (mysqlnd is recommended) and php-gd extension to allow Chamilo to resize pictures. Now also supports PHP 7.0</li>
   <li>MySQL 5.1+ or any version of MariaDB database server</li>
   <li>php5-intl package (for international behaviour support)</li>
   <li>php5-mbstring package (for international behaviour support)</li>

documentation/installation_guide.html

@@ -78,7 +78,7 @@ Chamilo is mainly a LMS running (the so called <span style="font-weight: bold;">
 <ul>
 <li><span style="font-weight: bold;">Apache 2.2+</span></li>
 <li><span style="font-weight: bold;">MySQL 5.1+ or MariaDB 5+</span></li>
-<li><span style="font-weight: bold;">PHP 5.4+ (5.6 recommended for greater efficiency) (support for PHP7 seems OK but not evaluated on high load setups just yet)</span></li>
+<li><span style="font-weight: bold;">PHP 5.5+ (5.6 recommended for greater efficiency) (support for PHP7 seems OK but not evaluated on high load setups just yet)</span></li>
 </ul>
 <br />
 All these pieces of software are free software and freely available. <br /><br />

documentation/installation_guide_es_ES.html

@@ -86,7 +86,7 @@
 Chamilo puede ser instalado indiferentemente en servidores Windows, Linux, Mac OS X y UNIX. Sin embargo, nosotros recomendamos el uso de un servidor Linux para una óptima flexibilidad, control remoto y escalabilidad.
 </p>
 <p>
-Chamilo es fundamentalmente un LMS que se ejecuta con Apache (2.2+), MySQL 5.1+ (o MariaDB) y PHP 5.4+ (trilogía también llamada AMP).
+Chamilo es fundamentalmente un LMS que se ejecuta con Apache (2.2+), MySQL 5.1+ (o MariaDB) y PHP 5.5+ (trilogía también llamada AMP).
 </p>
 <p>
 Todo este software es software de código abierto y está disponible libremente.

documentation/installation_guide_fr_FR.html

@@ -80,7 +80,7 @@
 
             Chamilo est un système de gestion de l'apprentissage (LMS) qui fonctionne
             principallement sur base d'un <span style="font-weight: bold;">serveur web (Apache 2.2+)</span>, de <span style="font-weight: bold;">MySQL 5.1+ ou de MariaDB 5+
-                (5 ou 10)</span> et de <span style="font-weight: bold;">PHP 5.4+</span> (le support de PHP 7 n'a pas été pleinement testé). <br />
+                (5 ou 10)</span> et de <span style="font-weight: bold;">PHP 5.5+</span> (le support de PHP 7 n'a pas été pleinement testé). <br />
 
 
             <br />

documentation/installation_guide_it_IT.html

@@ -73,7 +73,7 @@
 <p class="p8"><span class="s1"></span><br></p>
 <p class="p2"><span class="s1"><b>Chamilo</b> può essere installato indifferentemente su server Windows, Linux, Mac OS X e Unix. Tuttavia raccomandiamo l’utilizzo di server Linux per sfruttarne al meglio le caratteristiche di flessibilità, controllo remoto e scalabilità.</span></p>
 <p class="p3"><span class="s1"></span><br></p>
-<p class="p2"><span class="s1"><b>Chamilo</b> è principalmente un <b>LMS (Learning Management System)</b> che gira sulla piattaforma composta da <b>Apache (1.3,2.0 or 2.2)</b>, <b>MySQL 5.1 (o MariaDB</b>) e <b>PHP 5.4, 5.5 o 5.6</b>, meglio nota come piattaforma <b>AMP</b>.</span></p>
+<p class="p2"><span class="s1"><b>Chamilo</b> è principalmente un <b>LMS (Learning Management System)</b> che gira sulla piattaforma composta da <b>Apache (1.3,2.0 or 2.2)</b>, <b>MySQL 5.1 (o MariaDB</b>) e <b>PHP 5.5 o 5.6</b>, meglio nota come piattaforma <b>AMP</b>.</span></p>
 <p class="p3"><span class="s1"></span><br></p>
 <p class="p2"><span class="s1">Tutti questi software sono gratuiti e liberamente scaricabili.</span></p>
 <p class="p3"><span class="s1"></span><br></p>