Merge branch 'PHP-7.0' into PHP-7.1

diff --cc NEWS
index f62cd734ff5251138b289b8f845d8a3d8d9cb5e4,4eb5a7d531682673c1c59f99ac96e757c31f5e28..e68a2e8244846deeab330594cdc3aedb02719791
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -24,6 -34,12 +24,9 @@@ PH
      images). (cmb)
    . Fixed bug #68716 (possible resource leaks in _php_image_convert()). (cmb)
  
 -- IMAP:
 -  . Fixed bug #72852 (imap_mail null dereference). (Anatol)
 -
+ - iconv:
+   . Fixed bug #72320 (iconv_substr returns false for empty strings). (cmb)
+ 
  - Intl:
    . Fixed bug #65732 (grapheme_*() is not Unicode compliant on CR LF
      sequence). (cmb)

diff --cc ext/iconv/iconv.c
Simple merge