Merge branch 'PHP-7.4'

* PHP-7.4:
  Fix leak on assign concat of array and empty string

diff --cc Zend/tests/assign_concat_array_empty_string.phpt
index 0000000000000000000000000000000000000000,fcacb606755e6b35e250c27ffb8128ac3776f697..6e551d90397c70cf96210bdb40413ccb98229c27
mode 000000,100644..100644
--- /dev/null
--- 2/Zend/tests/assign_concat_array_empty_string.phpt
+++ b/Zend/tests/assign_concat_array_empty_string.phpt
@@@ -1,0 -1,13 +1,13 @@@
 -Notice: Array to string conversion in %s on line %d
+ --TEST--
+ Assign concat of array and empty string
+ --FILE--
+ <?php
+ 
+ $a = [0];
+ $a .= '';
+ var_dump($a);
+ 
+ ?>
+ --EXPECTF--
++Warning: Array to string conversion in %s on line %d
+ string(5) "Array"

diff --cc Zend/zend_operators.c
Simple merge