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--- en:create:functions:reference [24.01.2015 12:43] – [Example 2] alexander.ritter
+++ en:create:functions:reference [25.03.2022 22:06] (current) – admin
@@ Line 26: / Line 26: @@
 ===== Example 2 =====
-The use of the reference can be useful if other information is encoded within it. In the following example, social scientists would have "Axxx" as a reference (e.g. A100, A201, A991), and natural scientists get a "BXXX" reference (e.g. B100, B201, B990) in the URL.
+The use of the reference can be useful if other information is encoded within it. In the following example, social scientists would have "Axxx" as a reference (e.g. A100, A201, A991), and natural scientists would have a "BXXX" reference (e.g. B100, B201, B990) in the URL.
-Depending on the reference, question "AB01" or "AB02" will now be displayed. The first character has to first be extracted from the reference in order to so by  using ''{0}''. PHP's own function ''[[http://php.net/manual/en/function.strtoupper.php|strtoupper()]]'' ensures that potential lower case letters are converted into upper case.
+Depending on the reference, question "AB01" or "AB02" will now be displayed. In order to do so, the first character of the reference has to be extracted by using ''[0]''. PHP's own function ''[[http://php.net/manual/en/function.strtoupper.php|strtoupper()]]'' ensures potential lower case letters are converted into upper case.
 <code php>
@@ Line 35: / Line 35: @@
   // No reference submitted (less than 1 character)
   goToPage('next');
-} elseif ($ref{0} == 'A') {
+} elseif ($ref[0] == 'A') {
   question('AB01');  // question for social scientists
-} elseif ($ref{0} == 'B') {
+} elseif ($ref[0] == 'B') {
   question('AB02');  // question for natural scientists
 } else {