Add optional argument to debug_backtrace() and debug_print_backtrace() to limit the amount of stack frames returned.

1 files changed, 133 insertions, 0 deletions

diff --git a/Zend/tests/debug_backtrace_limit.phpt b/Zend/tests/debug_backtrace_limit.phpt
new file mode 100644
index 0000000000..59e04019bc
--- /dev/null
+++ b/Zend/tests/debug_backtrace_limit.phpt
@@ -0,0 +1,133 @@
+--TEST--
+debug_backtrace limit
+--FILE--
+<?php
+function a() {
+    b();
+}
+
+function b() {
+    c();
+}
+
+function c() {
+    print_r(debug_backtrace(0, 1));
+    print_r(debug_backtrace(0, 2));
+    print_r(debug_backtrace(0, 0));
+    print_r(debug_backtrace(0, 4));
+}
+
+a();
+?>
+--EXPECTF--
+Array
+(
+    [0] => Array
+        (
+            [file] => %s/debug_backtrace_limit.php
+            [line] => 7
+            [function] => c
+            [args] => Array
+                (
+                )
+
+        )
+
+)
+Array
+(
+    [0] => Array
+        (
+            [file] => %s/debug_backtrace_limit.php
+            [line] => 7
+            [function] => c
+            [args] => Array
+                (
+                )
+
+        )
+
+    [1] => Array
+        (
+            [file] => %s/debug_backtrace_limit.php
+            [line] => 3
+            [function] => b
+            [args] => Array
+                (
+                )
+
+        )
+
+)
+Array
+(
+    [0] => Array
+        (
+            [file] => %s/debug_backtrace_limit.php
+            [line] => 7
+            [function] => c
+            [args] => Array
+                (
+                )
+
+        )
+
+    [1] => Array
+        (
+            [file] => %s/debug_backtrace_limit.php
+            [line] => 3
+            [function] => b
+            [args] => Array
+                (
+                )
+
+        )
+
+    [2] => Array
+        (
+            [file] => %s/debug_backtrace_limit.php
+            [line] => 17
+            [function] => a
+            [args] => Array
+                (
+                )
+
+        )
+
+)
+Array
+(
+    [0] => Array
+        (
+            [file] => %s/debug_backtrace_limit.php
+            [line] => 7
+            [function] => c
+            [args] => Array
+                (
+                )
+
+        )
+
+    [1] => Array
+        (
+            [file] => %s/debug_backtrace_limit.php
+            [line] => 3
+            [function] => b
+            [args] => Array
+                (
+                )
+
+        )
+
+    [2] => Array
+        (
+            [file] => %s/debug_backtrace_limit.php
+            [line] => 17
+            [function] => a
+            [args] => Array
+                (
+                )
+
+        )
+
+)