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-rw-r--r--ext/standard/tests/strings/unpack.phpt11
1 files changed, 11 insertions, 0 deletions
diff --git a/ext/standard/tests/strings/unpack.phpt b/ext/standard/tests/strings/unpack.phpt
new file mode 100644
index 0000000000..f843dab878
--- /dev/null
+++ b/ext/standard/tests/strings/unpack.phpt
@@ -0,0 +1,11 @@
+--TEST--
+Invalid format type validation
+--FILE--
+<?php
+ var_dump(unpack("-2222", 1));
+ echo "Done\n";
+?>
+--EXPECTF--
+Warning: unpack(): Invalid format type - in %s/unpack.php on line %d
+bool(false)
+Done \ No newline at end of file