Added support for JSON_NUMERIC_CHECK option in json_encode() that converts

numeric strings to integers.

Author: Ilia Alshanetsky

NEWS

@@ -37,6 +37,8 @@
 - Added iterator support in MySQLi. mysqli_result implements Traversable.
   (Andrey, Johannes)
 - Added scalar typehinting. (Ilia, Derick)
+- Added support for JSON_NUMERIC_CHECK option in json_encode() that converts 
+  numeric strings to integers. (Ilia)
 
 - default_charset if not specified is now UTF-8 instead of ISO-8859-1. (Rasmus)
 

ext/json/json.c

@@ -40,15 +40,6 @@ static const char digits[] = "0123456789abcdef";
 
 zend_class_entry *php_json_serializable_ce;
 
-#define PHP_JSON_HEX_TAG	(1<<0)
-#define PHP_JSON_HEX_AMP	(1<<1)
-#define PHP_JSON_HEX_APOS	(1<<2)
-#define PHP_JSON_HEX_QUOT	(1<<3)
-#define PHP_JSON_FORCE_OBJECT	(1<<4)
-
-#define PHP_JSON_OUTPUT_ARRAY 0
-#define PHP_JSON_OUTPUT_OBJECT 1
-
 ZEND_DECLARE_MODULE_GLOBALS(json)
 
 /* {{{ arginfo */
@@ -99,6 +90,7 @@ static PHP_MINIT_FUNCTION(json)
 	REGISTER_LONG_CONSTANT("JSON_HEX_APOS", PHP_JSON_HEX_APOS, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("JSON_HEX_QUOT", PHP_JSON_HEX_QUOT, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("JSON_FORCE_OBJECT", PHP_JSON_FORCE_OBJECT, CONST_CS | CONST_PERSISTENT);
+	REGISTER_LONG_CONSTANT("JSON_NUMERIC_CHECK", PHP_JSON_NUMERIC_CHECK, CONST_CS | CONST_PERSISTENT);
 
 	REGISTER_LONG_CONSTANT("JSON_ERROR_NONE", PHP_JSON_ERROR_NONE, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("JSON_ERROR_DEPTH", PHP_JSON_ERROR_DEPTH, CONST_CS | CONST_PERSISTENT);
@@ -312,6 +304,30 @@ static void json_escape_string(smart_str *buf, char *s, int len, int options TSR
 		return;
 	}
 
+	if (options & PHP_JSON_NUMERIC_CHECK) {
+		double d;
+		int type;
+		long p;
+
+		if ((type = is_numeric_string(s, len, &p, &d, 0)) != 0) {
+			if (type == IS_LONG) {
+				smart_str_append_long(buf, p);
+			} else if (type == IS_DOUBLE) {
+				if (!zend_isinf(d) && !zend_isnan(d)) {
+					char *tmp;
+					int l = spprintf(&tmp, 0, "%.*k", (int) EG(precision), d);
+					smart_str_appendl(buf, tmp, l);
+					efree(tmp);
+				} else {
+					php_error_docref(NULL TSRMLS_CC, E_WARNING, "double %.9g does not conform to the JSON spec, encoded as 0", d);
+					smart_str_appendc(buf, '0');
+				}
+			}
+			return;
+		}
+		
+	}
+
 	utf16 = (unsigned short *) safe_emalloc(len, sizeof(unsigned short), 0);
 
 	len = utf8_to_utf16(utf16, s, len);
@@ -496,7 +512,7 @@ PHP_JSON_API void php_json_encode(smart_str *buf, zval *val, int options TSRMLS_
 					smart_str_appendl(buf, d, len);
 					efree(d);
 				} else {
-					zend_error(E_WARNING, "[json] (php_json_encode) double %.9g does not conform to the JSON spec, encoded as 0", dbl);
+					php_error_docref(NULL TSRMLS_CC, E_WARNING, "double %.9g does not conform to the JSON spec, encoded as 0", dbl);
 					smart_str_appendc(buf, '0');
 				}
 			}
@@ -517,7 +533,7 @@ PHP_JSON_API void php_json_encode(smart_str *buf, zval *val, int options TSRMLS_
 			break;
 
 		default:
-			zend_error(E_WARNING, "[json] (php_json_encode) type is unsupported, encoded as null");
+			php_error_docref(NULL TSRMLS_CC, E_WARNING, "type is unsupported, encoded as null");
 			smart_str_appendl(buf, "null", 4);
 			break;
 	}

ext/json/php_json.h

@@ -51,6 +51,16 @@ PHP_JSON_API void php_json_encode(smart_str *buf, zval *val, int options TSRMLS_
 PHP_JSON_API void php_json_decode(zval *return_value, char *str, int str_len, zend_bool assoc, long depth TSRMLS_DC);
 extern zend_class_entry *php_json_serializable_ce;
 
+#define PHP_JSON_HEX_TAG	(1<<0)
+#define PHP_JSON_HEX_AMP	(1<<1)
+#define PHP_JSON_HEX_APOS	(1<<2)
+#define PHP_JSON_HEX_QUOT	(1<<3)
+#define PHP_JSON_FORCE_OBJECT	(1<<4)
+#define PHP_JSON_NUMERIC_CHECK	(1<<5)
+
+#define PHP_JSON_OUTPUT_ARRAY 0
+#define PHP_JSON_OUTPUT_OBJECT 1
+
 #endif  /* PHP_JSON_H */
 
 /*

ext/json/tests/json_encode_basic.phpt

@@ -151,7 +151,7 @@ string(4) "null"
 string(4) "null"
 -- Iteration 26 --
 
-Warning: [json] (php_json_encode) type is unsupported, encoded as null in %s on line %d
+Warning: json_encode(): type is unsupported, encoded as null in %s on line %d
 string(4) "null"
 -- Iteration 27 --
 string(82) "{"MyInt":99,"MyFloat":123.45,"MyBool":true,"MyNull":null,"MyString":"Hello World"}"

ext/json/tests/json_encode_numeric.phpt

@@ -0,0 +1,26 @@
+--TEST--
+Test json_encode() function with numeric flag
+--SKIPIF--
+<?php
+if (!extension_loaded("json")) {
+	die('skip JSON extension not available in this build');
+}	 
+?>
+--FILE--
+<?php
+var_dump(
+	json_encode("1", JSON_NUMERIC_CHECK),
+	json_encode("9.4324", JSON_NUMERIC_CHECK),
+	json_encode(array("122321", "3232595.33423"), JSON_NUMERIC_CHECK),
+	json_encode("1"),
+	json_encode("9.4324"),
+	json_encode(array("122321", "3232595.33423"))
+);
+?>
+--EXPECT--
+string(1) "1"
+string(6) "9.4324"
+string(22) "[122321,3232595.33423]"
+string(3) ""1""
+string(8) ""9.4324""
+string(26) "["122321","3232595.33423"]"