Address some comments

Author: Girgias

Zend/tests/zend_ini_parse_quantity.phpt renamed to Zend/tests/zend_ini/zend_ini_parse_quantity.phpt

@@ -13,6 +13,10 @@ $tests = [
     '1X',    # Unknown multiplier.
     '1.0K',  # Non integral digits.
 
+    '0X',    # Valid prefix with no value
+    '0Z',    # Invalid prefix
+    '0XK',   # Valid prefix with no value and multiplier
+
     # Null bytes
     " 123\x00K",
     "\x00 123K",
@@ -48,6 +52,21 @@ int(1)
 Warning: Invalid quantity "1.0K", interpreting as "1K" for backwards compatibility in %s%ezend_ini_parse_quantity_error.php on line %d
 int(1024)
 
+# "0X"
+
+Warning: Invalid quantity: no digits after base prefix, interpreting as "0" for backwards compatibility in %s%ezend_ini_parse_quantity_error.php on line %d
+int(0)
+
+# "0Z"
+
+Warning: Invalid prefix "0Z", interpreting as "0" for backwards compatibility in %s%ezend_ini_parse_quantity_error.php on line %d
+int(0)
+
+# "0XK"
+
+Warning: Invalid quantity "0XK": no valid leading digits, interpreting as "0" for backwards compatibility in %s%ezend_ini_parse_quantity_error.php on line %d
+int(0)
+
 # " 123\000K"
 
 Warning: Invalid quantity " 123\x00K", interpreting as " 123K" for backwards compatibility in %s on line %d

Zend/tests/zend_ini_parse_quantity_binary_prefixes.phpt renamed to Zend/tests/zend_ini/zend_ini_parse_quantity_binary_prefixes.phpt

@@ -0,0 +1,71 @@
+--TEST--
+Test parsing of valid 0 quantities
+--EXTENSIONS--
+zend_test
+--FILE--
+<?php
+
+$tests = [
+    '0',
+    '0K',
+    '0k',
+    '0M',
+    '0m',
+    '0G',
+    '0g',
+    '-0',
+    '-0K',
+    '-0k',
+    '-0M',
+    '-0m',
+    '-0G',
+    '-0g',
+];
+
+foreach ($tests as $setting) {
+    printf("# \"%s\"\n", addcslashes($setting, "\0..\37!@\177..\377"));
+    var_dump(zend_test_zend_ini_parse_quantity($setting));
+    print "\n";
+}
+--EXPECT--
+# "0"
+int(0)
+
+# "0K"
+int(0)
+
+# "0k"
+int(0)
+
+# "0M"
+int(0)
+
+# "0m"
+int(0)
+
+# "0G"
+int(0)
+
+# "0g"
+int(0)
+
+# "-0"
+int(0)
+
+# "-0K"
+int(0)
+
+# "-0k"
+int(0)
+
+# "-0M"
+int(0)
+
+# "-0m"
+int(0)
+
+# "-0G"
+int(0)
+
+# "-0g"
+int(0)