Parameter skipping in function calls

Zend/tests/default_params01.phpt

@@ -0,0 +1,72 @@
+--TEST--
+Default parameters - 1
+--FILE--
+<?php
+function test($a=1, $b=2, $c=3) {
+	var_dump($a, $b, $c);
+	var_dump(func_get_args());
+}
+echo "7\n";
+test(7);
+echo "default,4,5\n";
+test(default,4,5);
+echo "default,default,8\n";
+test(default,default,8);
+echo "3,default,5\n";
+test(3,default,5);
+echo "3,default,7,default,6\n";
+test(3,default,7,default,6);
+var_dump(default,default,1);
+echo "Done\n";
+?>
+--EXPECTF--	
+7
+int(7)
+int(2)
+int(3)
+array(1) {
+  [0]=>
+  int(7)
+}
+default,4,5
+int(1)
+int(4)
+int(5)
+array(2) {
+  [1]=>
+  int(4)
+  [2]=>
+  int(5)
+}
+default,default,8
+int(1)
+int(2)
+int(8)
+array(1) {
+  [2]=>
+  int(8)
+}
+3,default,5
+int(3)
+int(2)
+int(5)
+array(2) {
+  [0]=>
+  int(3)
+  [2]=>
+  int(5)
+}
+3,default,7,default,6
+int(3)
+int(2)
+int(7)
+array(3) {
+  [0]=>
+  int(3)
+  [2]=>
+  int(7)
+  [4]=>
+  int(6)
+}
+int(1)
+Done

Zend/tests/default_params02.phpt

@@ -0,0 +1,59 @@
+--TEST--
+Default parameters - 2
+--FILE--
+<?php
+function foo($a, $b=1, $c=2, $d = 3) {
+	var_dump($a, $b, $c, $d);
+	var_dump(func_num_args());
+	var_dump(func_get_args());
+}
+
+foo(1,2,3);
+foo(1,default,3);
+foo(default,2,3);
+var_dump(42,default,42);
+echo "Done\n";
+?>
+--EXPECTF--	
+int(1)
+int(2)
+int(3)
+int(3)
+int(3)
+array(3) {
+  [0]=>
+  int(1)
+  [1]=>
+  int(2)
+  [2]=>
+  int(3)
+}
+int(1)
+int(1)
+int(3)
+int(3)
+int(3)
+array(2) {
+  [0]=>
+  int(1)
+  [2]=>
+  int(3)
+}
+
+Warning: Missing argument 1 for foo(), called in %s on line %d and defined in %s on line %d
+
+Notice: Undefined variable: a in %s on line %d
+NULL
+int(2)
+int(3)
+int(3)
+int(3)
+array(2) {
+  [1]=>
+  int(2)
+  [2]=>
+  int(3)
+}
+int(42)
+int(42)
+Done

Zend/tests/default_params03.phpt

@@ -0,0 +1,19 @@
+--TEST--
+Default parameters - 3
+--FILE--
+<?php
+function test($a=1, $b=2, $c=3) {
+	var_dump(func_get_args());
+	var_dump(func_get_arg(1));
+}
+
+test(7,default);
+echo "Done\n";
+?>
+--EXPECTF--	
+array(1) {
+  [0]=>
+  int(7)
+}
+bool(false)
+Done

Zend/tests/default_params04.phpt

@@ -0,0 +1,45 @@
+--TEST--
+Default parameters - 4
+--FILE--
+<?php
+function foo($a, $b=1, $c=2, $d = 3) {
+	var_dump($a, $b, $c, $d);
+	var_dump(func_num_args());
+	var_dump(func_get_args());
+	echo "==\n";
+}
+
+call_user_func('foo', 1,default,2,3);
+call_user_func_array('foo', array(42, 2=>43, 4=>44));
+echo "Done\n";
+?>
+--EXPECTF--	
+int(1)
+int(2)
+int(3)
+int(3)
+int(3)
+array(3) {
+  [0]=>
+  int(1)
+  [1]=>
+  int(2)
+  [2]=>
+  int(3)
+}
+==
+int(42)
+int(1)
+int(43)
+int(3)
+int(5)
+array(3) {
+  [0]=>
+  int(42)
+  [2]=>
+  int(43)
+  [4]=>
+  int(44)
+}
+==
+Done

Zend/tests/default_params05.phpt

@@ -0,0 +1,22 @@
+--TEST--
+Default parameters - 5
+--FILE--
+<?php
+function test($a=1, $b=2, $c=3) {
+	debug_print_backtrace();
+}
+
+test(7);
+test(default,4,5);
+test(default,default,8);
+test(3,default,5);
+test(3,default,7,default,6);
+echo "Done\n";
+?>
+--EXPECTF--	
+#0  test(7) called at [%s:%d]
+#0  test(, 4, 5) called at [%s.php:%d]
+#0  test(, , 8) called at [%s:%d]
+#0  test(3, , 5) called at [%s:%d]
+#0  test(3, , 7, , 6) called at [%s:%d]
+Done

Zend/tests/default_params06.phpt

@@ -0,0 +1,15 @@
+--TEST--
+Default parameters - 6, by-refs
+--FILE--
+<?php
+function test($a=1, &$b=2) {
+	var_dump($a, $b);
+	$b = 10;
+}
+
+test(7);
+test(7, default);
+echo "Done\n";
+?>
+--EXPECTF--	
+Fatal error: Cannot pass parameter 2 by reference in %s on line %d

Zend/tests/default_params07.phpt

@@ -0,0 +1,19 @@
+--TEST--
+Default parameters - 7, by-refs
+--FILE--
+<?php
+
+test(7);
+test(7, default);
+echo "Done\n";
+function test($a=1, &$b=2) {
+	var_dump($a, $b);
+	$b = 10;
+}
+?>
+--EXPECTF--	
+int(7)
+int(2)
+
+Fatal error: Cannot pass parameter 2 by reference in %s on line %d
+

Zend/tests/default_params08.phpt

@@ -0,0 +1,11 @@
+--TEST--
+Default parameters - 8, by-refs
+--FILE--
+<?php
+
+var_dump(is_callable("is_callable", default, default));
+echo "Done\n";
+?>
+--EXPECTF--	
+Fatal error: Cannot pass parameter 3 by reference in %s on line %d
+

Zend/tests/default_params09.phpt

@@ -0,0 +1,21 @@
+--TEST--
+Default parameters - 9, varargs with +
+--FILE--
+<?php
+$foo = $bar = "test";
+var_dump(compact("foo", default, "bar"));
+var_dump(compact(default, default));
+echo "Done\n";
+?>
+--EXPECTF--	
+array(2) {
+  ["foo"]=>
+  string(4) "test"
+  ["bar"]=>
+  string(4) "test"
+}
+
+Warning: compact() expects at least 1 parameter, 0 given in %s on line %d
+NULL
+Done
+