Fixed bug #25758 (var_export does not escape ' & \ inside array keys)

ext/standard/tests/array/bug25758.phpt

@@ -0,0 +1,14 @@
+--TEST--
+Bug #25758 (var_export does not escape ' & \ inside array keys)
+--FILE--
+<?php
+	$a = array ("quote'" => array("quote'"));
+	echo var_export($a, true);
+?>
+--EXPECT--
+array (
+  'quote\'' => 
+  array (
+    0 => 'quote\'',
+  ),
+)

ext/standard/var.c

@@ -271,7 +271,11 @@ static int php_array_element_export(zval **zv, int num_args, va_list args, zend_
 	if (hash_key->nKeyLength==0) { /* numeric key */
 		php_printf("%*c%ld => ", level + 1, ' ', hash_key->h);
 	} else { /* string key */
-		php_printf("%*c'%s' => ", level + 1, ' ', hash_key->arKey);
+		char *key;
+		int key_len;
+		key = php_addcslashes(hash_key->arKey, strlen(hash_key->arKey), &key_len, 0, "'\\", 2 TSRMLS_CC);
+		php_printf("%*c'%s' => ", level + 1, ' ', key);
+		efree(key);
 	}
 	php_var_export(zv, level + 2 TSRMLS_CC);
 	PUTS (",\n");