1 files changed, 58 insertions, 0 deletions
diff --git a/ext/standard/tests/file/fseek_variation3.phpt b/ext/standard/tests/file/fseek_variation3.phpt
new file mode 100644
index 0000000000..57dad36775
--- /dev/null
+++ b/ext/standard/tests/file/fseek_variation3.phpt
@@ -0,0 +1,58 @@
+--TEST--
+Test fseek() function : variation functionality beyond file boundaries 
+--CREDITS--
+Dave Kelsey <d_kelsey@uk.ibm.com>
+--FILE--
+<?php
+/* Prototype  : proto int fseek(resource fp, int offset [, int whence])
+ * Description: Seek on a file pointer 
+ * Source code: ext/standard/file.c
+ * Alias to functions: gzseek
+ */
+
+/*
+ * add a comment here to say what the test is supposed to do
+ */
+
+echo "*** Testing fseek() : variation - beyond file boundaries ***\n";
+
+$outputfile = __FILE__.".tmp";
+
+$h = fopen($outputfile, "wb+");
+for ($i = 1; $i < 10; $i++) {
+   fwrite($h, chr(0x30 + $i));
+}
+
+echo "--- fseek beyond start of file ---\n";
+var_dump(fseek($h, -4, SEEK_SET));
+echo "after -4 seek: ".bin2hex(fread($h,1))."\n";
+var_dump(fseek($h, -1, SEEK_CUR));
+echo "after seek back 1: ".bin2hex(fread($h,1))."\n";
+var_dump(fseek($h, -20, SEEK_CUR));
+echo "after seek back 20: ".bin2hex(fread($h,1))."\n";
+
+echo "--- fseek beyond end of file ---\n";
+var_dump(fseek($h, 16, SEEK_SET));
+fwrite($h, b"end");
+fseek($h ,0, SEEK_SET);
+$data = fread($h, 4096);
+echo bin2hex($data)."\n";
+
+fclose($h);
+unlink($outputfile);
+
+echo "Done";
+?>
+--EXPECTF--
+*** Testing fseek() : variation - beyond file boundaries ***
+--- fseek beyond start of file ---
+int(-1)
+after -4 seek: 
+int(0)
+after seek back 1: 39
+int(-1)
+after seek back 20: 
+--- fseek beyond end of file ---
+int(0)
+31323334353637383900000000000000656e64
+Done