Fix bug #64695 (JSON_NUMERIC_CHECK has issues with strings that are numbers plus the letter e)

NEWS

@@ -630,6 +630,8 @@ PHP                                                                        NEWS
 - JSON:
   . Fixed bug #66021 (Blank line inside empty array/object when
     JSON_PRETTY_PRINT is set). (Kevin Israel)
+  . Fixed bug #64695 (JSON_NUMERIC_CHECK has issues with strings that are 
+    numbers plus the letter e). (Jakub Zelenka)
 
 - LDAP:
   . Fixed issue with null bytes in LDAP bindings. (Matthew Daley)

ext/json/json.c

@@ -418,18 +418,14 @@ static void json_escape_string(smart_str *buf, char *s, int len, int options TSR
 		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 {
-					JSON_G(error_code) = PHP_JSON_ERROR_INF_OR_NAN;
-					smart_str_appendc(buf, '0');
-				}
+				return;
+			} else if (type == IS_DOUBLE && !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);
+				return;
 			}
-			return;
 		}
 
 	}

ext/json/tests/bug64695.phpt

@@ -0,0 +1,14 @@
+--TEST--
+Bug #64695 JSON_NUMERIC_CHECK has issues with strings that are numbers plus the letter e
+--SKIPIF--
+<?php if (!extension_loaded("json")) print "skip"; ?>
+--FILE--
+<?php
+$t = array('test' => '123343e871700');
+var_dump(json_encode($t, JSON_NUMERIC_CHECK));
+
+echo "Done\n";
+?>
+--EXPECT--
+string(24) "{"test":"123343e871700"}"
+Done