Prevent from being affected by local php.ini

ext/json/tests/bug42785.phpt

@@ -1,5 +1,7 @@
 --TEST--
 Bug #42785 (Incorrect formatting of double values with non-english locales)
+--INI--
+serialize_precision=-1
 --SKIPIF--
 <?php
 if (!extension_loaded('json')) die('skip');

ext/json/tests/bug50224.phpt

@@ -1,5 +1,7 @@
 --TEST--
 bug #50224 (json_encode() does not always encode a float as a float)
+--INI--
+serialize_precision=-1
 --SKIPIF--
 <?php if (!extension_loaded("json")) print "skip"; ?>
 --FILE--
@@ -57,4 +59,4 @@ array(2) {
   float(12)
   ["integer"]=>
   int(12)
-}
+}

ext/json/tests/json_encode_numeric.phpt

@@ -1,5 +1,7 @@
 --TEST--
 Test json_encode() function with numeric flag
+--INI--
+serialize_precision=-1
 --SKIPIF--
 <?php if (!extension_loaded("json")) print "skip"; ?>
 --FILE--

ext/json/tests/pass001.1_64bit.phpt

@@ -2,6 +2,7 @@
 JSON (http://www.crockford.com/JSON/JSON_checker/test/pass1.json)
 --INI--
 precision=14
+serialize_precision=-1
 --SKIPIF--
 <?php
 if (!extension_loaded('json')) die('skip');

ext/json/tests/pass001.phpt

@@ -2,6 +2,7 @@
 JSON (http://www.crockford.com/JSON/JSON_checker/test/pass1.json)
 --INI--
 precision=14
+serialize_precision=-1
 --SKIPIF--
 <?php
 if (!extension_loaded('json')) die('skip');

ext/json/tests/serialize.phpt

@@ -1,5 +1,7 @@
 --TEST--
 json_encode() Serialization tests
+--INI--
+serialize_precision=-1
 --SKIPIF--
 <?php if (!extension_loaded("json")) print "skip"; ?>
 --FILE--