updated php tests

Author: badnikhil

lib/codegen/php/curl.dart

@@ -37,7 +37,14 @@ $request_body = '{{body}}';
 $queryParams = [
 {{params}}
 ];
-$uri .= '?' . http_build_query($queryParams, '', '&');
+$queryParts = [];
+foreach ($queryParams as $key => $values) {
+    foreach ((array) $values as $value) {
+        $queryParts[] = urlencode($key) . '=' . urlencode($value);
+    }
+}
+$queryString = implode('&', $queryParts);
+$uri .= '?' . $queryString;
 
 
 ''';

lib/codegen/php/guzzle.dart

@@ -24,7 +24,14 @@ String kTemplateParams = """
 \$queryParams = [
 {{params}}
 ];
-\$queryParamsStr = '?' . http_build_query(\$queryParams, '','&');
+\$queryParts = [];
+foreach (\$queryParams as \$key => \$values) {
+    foreach ((array)\$values as \$value) {
+        \$queryParts[] = urlencode(\$key) . '=' . urlencode(\$value);
+    }
+}
+\$queryParamsStr = '?' . implode('&', \$queryParts);
+
 """;
 
 

lib/codegen/php/http_plug.dart

@@ -22,7 +22,11 @@ use Http\\Discovery\\Psr18ClientDiscovery;
   \$queryParams = [
   {{params}}
   ];
-  \$uri .= '?' . http_build_query(\$queryParams,'','&');
+  \$queryString = http_build_query(\$queryParams, '', '&', PHP_QUERY_RFC3986);
+  \$queryString = preg_replace('/%5B[0-9]+%5D/', '', \$queryString);
+
+  \$uri .= '?'.\$queryString;
+
 
   """;