[svn r18575] Minor - Fixed warning when you export an exercise - see FS#3679

main/exercice/export/qti2/qti2_classes.php

@@ -90,7 +90,7 @@ class ImsAnswerMultipleChoice extends Answer
 		$this->answerList = $this->getAnswersList();
         $out  = '    <choiceInteraction responseIdentifier="' . $questionIdent . '" >' . "\n";
         $out .= '      <prompt> ' . $questionStatment . ' </prompt>'. "\n";
-
+		if (is_array($this->answerList)) {
 	        foreach ($this->answerList as $current_answer)
 	        {
 	            $out .= '      <simpleChoice identifier="answer_' . $current_answer['id'] . '" fixed="false">' . $current_answer['answer'];
@@ -100,7 +100,7 @@ class ImsAnswerMultipleChoice extends Answer
 	            }
 	            $out .= '</simpleChoice>'. "\n";
 	        }
-
+		}
         $out .= '    </choiceInteraction>'. "\n"; 
         return $out;
     }
@@ -120,7 +120,7 @@ class ImsAnswerMultipleChoice extends Answer
         //Match the correct answers
 
         $out .= '    <correctResponse>'. "\n";
-
+		if (is_array($this->answerList)) {
 	        foreach($this->answerList as $current_answer)
 	        {
 	            if ($current_answer['correct'])
@@ -128,12 +128,13 @@ class ImsAnswerMultipleChoice extends Answer
 	                $out .= '      <value>answer_'. $current_answer['id'] .'</value>'. "\n";
 	            }
 	        }
+		}
         $out .= '    </correctResponse>'. "\n";
 
         //Add the grading
 
         $out .= '    <mapping>'. "\n";
-
+		if (is_array($this->answerList)) {
 	        foreach($this->answerList as $current_answer)
 	        {
 	            if (isset($current_answer['grade']))
@@ -141,6 +142,7 @@ class ImsAnswerMultipleChoice extends Answer
 	                $out .= '      <mapEntry mapKey="answer_'. $current_answer['id'] .'" mappedValue="'.$current_answer['grade'].'" />'. "\n";
 	            }
 	        }
+		}
         $out .= '    </mapping>'. "\n";
 
         $out .= '  </responseDeclaration>'. "\n";
@@ -167,7 +169,7 @@ class ImsAnswerFillInBlanks extends Answer
         //    {
         		$text = '';
                 $text .= $this->answerText;
-
+				if (is_array($this->answerList)) {
 	                foreach ($this->answerList as $key=>$answer)
 	                {
 	                	$key = $answer['id'];
@@ -175,6 +177,7 @@ class ImsAnswerFillInBlanks extends Answer
 	                	$len = strlen($answer);
 	                    $text = str_replace('['.$answer.']','<textEntryInteraction responseIdentifier="fill_'.$key.'" expectedLength="'.strlen($answer).'"/>', $text);
 	                }
+				}
                 $out = $text;
         //    }
         //    break;
@@ -234,7 +237,7 @@ class ImsAnswerFillInBlanks extends Answer
 		$this->answerList = $this->getAnswersList();
 		$this->gradeList = $this->getGradesList();
         $out = '';
-
+		if (is_array($this->answerList)) {
 	        foreach ($this->answerList as $answerKey=>$answer)
 	        {
 	        	$answerKey = $answer['id'];
@@ -271,6 +274,7 @@ class ImsAnswerFillInBlanks extends Answer
 	
 	            $out .= '  </responseDeclaration>'. "\n";
 	        }
+		}
 
        return $out;
     }
@@ -294,11 +298,12 @@ class ImsAnswerMatching extends Answer
         //add left column
 
         $out .= '  <simpleMatchSet>'. "\n";
-
+		if (is_array($this->leftList)) {
 	        foreach ($this->leftList as $leftKey=>$leftElement)
 	        {
 	            $out .= '    <simpleAssociableChoice identifier="left_'.$leftKey.'" >'. $leftElement['answer'] .'</simpleAssociableChoice>'. "\n";
 	        }
+    	}
         
         $out .= '  </simpleMatchSet>'. "\n";
 
@@ -308,12 +313,13 @@ class ImsAnswerMatching extends Answer
 
         $i = 0;
 
+		if (is_array($this->rightList)) {
 	        foreach($this->rightList as $rightKey=>$rightElement)
 	        {
 	            $out .= '    <simpleAssociableChoice identifier="right_'.$i.'" >'. $rightElement['answer'] .'</simpleAssociableChoice>'. "\n";
 	            $i++;
 	        }
-
+		}
         $out .= '  </simpleMatchSet>'. "\n";
 
         $out .= '</matchInteraction>'. "\n";
@@ -331,7 +337,7 @@ class ImsAnswerMatching extends Answer
         $out .= '    <correctResponse>' . "\n";
 
         $gradeArray = array();
-
+		if (is_array($this->leftList)) {
 	        foreach ($this->leftList as $leftKey=>$leftElement)
 	        {
 	            $i=0;
@@ -346,12 +352,15 @@ class ImsAnswerMatching extends Answer
 	                $i++;
 	            }
 	        }
+		}
         $out .= '    </correctResponse>'. "\n";
         $out .= '    <mapping>' . "\n";
+        if (is_array($gradeArray)) {
 	        foreach ($gradeArray as $gradeKey=>$grade)
 	        {
 	            $out .= '          <mapEntry mapKey="'.$gradeKey.'" mappedValue="'.$grade.'"/>' . "\n";
 	        }
+        }
         $out .= '    </mapping>' . "\n";
         $out .= '  </responseDeclaration>'. "\n";
 
@@ -380,6 +389,7 @@ class ImsAnswerHotspot extends Answer
 		$text .= '      <graphicOrderInteraction responseIdentifier="hotspot_'.$questionIdent.'">'."\n";
 		$text .= '        <prompt>'.$questionDesc.'</prompt>'."\n";
 		$text .= '        <object type="'.$mimetype.'" width="250" height="230" data="'.$questionMedia.'">-</object>'."\n";
+        if (is_array($this->answerList)) {
 	        foreach ($this->answerList as $key=>$answer)
 	        {
 	        	$key = $answer['id'];
@@ -412,6 +422,7 @@ class ImsAnswerHotspot extends Answer
 	        	}
 	            $text .= '        <hotspotChoice shape="'.$type.'" coords="'.$coords.'" identifier="'.$key.'"/>'."\n";
 	        }
+        }
         $text .= '      </graphicOrderInteraction>'."\n";
         $out = $text;
 
@@ -432,6 +443,7 @@ class ImsAnswerHotspot extends Answer
         $out .= '  <responseDeclaration identifier="hotspot_'.$questionIdent.'" cardinality="ordered" baseType="identifier">' . "\n";
         $out .= '    <correctResponse>'. "\n";
 		
+		if (is_array($this->answerList)) {
 	        foreach ($this->answerList as $answerKey=>$answer)
 	        {
 	        	$answerKey = $answer['id'];
@@ -439,6 +451,7 @@ class ImsAnswerHotspot extends Answer
 	            $out .= '      <value>'.$answerKey.'</value>'. "\n";
 	
 	        }
+		}
         $out .= '    </correctResponse>'. "\n";
         $out .= '  </responseDeclaration>'. "\n";