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diff --git a/ext/date/tests/idate_variation4.phpt b/ext/date/tests/idate_variation4.phpt
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+++ b/ext/date/tests/idate_variation4.phpt
@@ -0,0 +1,66 @@
+--TEST--
+Test idate() function : usage variation - Passing supported Date format characters to format argument.
+--FILE--
+<?php
+/* Prototype  : int idate(string format [, int timestamp])
+ * Description: Format a local time/date as integer 
+ * Source code: ext/date/php_date.c
+ * Alias to functions: 
+ */
+
+echo "*** Testing idate() : usage variation ***\n";
+
+// Initialise function arguments not being substituted (if any)
+date_default_timezone_set("Asia/Calcutta");
+
+//array of values to iterate over
+$inputs = array(
+
+	  'Day of the month' => 'd',
+	  'Leap Year' =>'L',
+	  'Month number' => 'm',
+	  'Days in the month' => 't',
+	  'Day of the week' => 'w',
+	  'ISO-8601 week number' => 'W',
+	  'Year (1 or 2 digits)' => 'y',
+	  'Year 4 digits' => 'Y',
+	  'Day of the year' => 'z',
+);
+
+// loop through each element of the array for timestamp
+foreach($inputs as $key =>$value) {
+      echo "\n--$key--\n";
+      var_dump( idate($value) );
+};
+?>
+===DONE===
+--EXPECTF--
+*** Testing idate() : usage variation ***
+
+--Day of the month--
+int(%d)
+
+--Leap Year--
+int(%d)
+
+--Month number--
+int(%d)
+
+--Days in the month--
+int(%d)
+
+--Day of the week--
+int(%d)
+
+--ISO-8601 week number--
+int(%d)
+
+--Year (1 or 2 digits)--
+int(%d)
+
+--Year 4 digits--
+int(%d)
+
+--Day of the year--
+int(%d)
+===DONE===