1 files changed, 56 insertions, 0 deletions
diff --git a/ext/standard/tests/array/usort_error2.phpt b/ext/standard/tests/array/usort_error2.phpt
new file mode 100644
index 0000000..308199f
--- /dev/null
+++ b/ext/standard/tests/array/usort_error2.phpt
@@ -0,0 +1,56 @@
+--TEST--
+Test usort() function : error conditions - Pass unknown 'cmp_function'
+--FILE--
+<?php
+/* Prototype  : bool usort(array $array_arg, string $cmp_function)
+ * Description: Sort an array by values using a user-defined comparison function 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Pass an unknown comparison function to usort() to test behaviour.
+ * Pass incorrect number of arguments and an unknown function to test which error
+ * is generated.
+ */
+
+echo "*** Testing usort() : error conditions ***\n";
+
+function cmp($value1, $value2)
+{
+  if($value1 == $value2) {
+    return 0;
+  }
+  else if($value1 > $value2) {
+    return 1;
+  }
+  else {
+    return -1;
+  }
+}
+
+// Initialize 'array_arg' 
+$array_arg = array(0 => 1, 1 => 10, 2 => 'string', 3 => 3, 4 => 2, 5 => 100, 6 => 25);
+$extra_arg = 10;
+
+// With non existent comparison function
+echo "\n-- Testing usort() function with non-existent compare function --\n";
+var_dump( usort($array_arg, 'non_existent') );
+
+// With non existent comparison function and extra arguemnt
+echo "\n-- Testing usort() function with non-existent compare function and extra argument --\n";
+var_dump( usort($array_arg, 'non_existent', $extra_arg) );
+?>
+===DONE===
+--EXPECTF--
+*** Testing usort() : error conditions ***
+
+-- Testing usort() function with non-existent compare function --
+
+Warning: usort() expects parameter 2 to be a valid callback, function 'non_existent' not found or invalid function name in %s on line %d
+NULL
+
+-- Testing usort() function with non-existent compare function and extra argument --
+
+Warning: usort() expects exactly 2 parameters, 3 given in %s on line %d
+NULL
+===DONE===
+\ No newline at end of file