Cp7 m510 centreon awie (fixes) (#6313)

* fix(global): PHP 7 compatability, deprecated function, PHP notices

replace using of deprecated each() function with foreach(),
fix several PHP notices related with undefined index
fix PHP notices related to undefined index and fix CentreonObject::add compatibility with child objects
set NULL in lower case

Resolves CP7M-51

www/class/centreon-clapi/centreonObject.class.php

@@ -267,9 +267,10 @@ protected function checkParameters()
     /**
      * Add Action
      *
+     * @param mixed $parameters
      * @return int
      */
-    public function add()
+    public function add($parameters = NULL)
     {
         $id = $this->object->insert($this->params);
         $this->addAuditLog(
@@ -347,9 +348,10 @@ public function setparam($objectId, $params = array())
      * Shows list
      *
      * @param array $params
+     * @param array $filters
      * @return void
      */
-    public function show($params = array(), $filters = array())
+    public function show(array $params = null, array $filters = null)
     {
         echo str_replace("_", " ", implode($this->delim, $params)) . "\n";
         $elements = $this->object->getList($params, -1, 0, null, null, $filters);

www/class/centreon-clapi/centreonServiceTemplate.class.php

@@ -505,6 +505,9 @@ public function setmacro($parameters)
         if (count($params) < 3) {
             throw new CentreonClapiException(self::MISSINGPARAMETER);
         }
+
+        $params[3] = isset($params[3]) ? $params[3] : null;
+
         $elements = $this->object->getList(
             "service_id",
             -1,