Changed functions
PHP Core
-
debug_zval_dump() now prints "int" instead of "long",
and "float" instead of "double"
-
dirname() now optionally takes a second parameter,
depth, to get the name of the directory
depth levels up from the current directory.
-
getrusage() is now supported on Windows.
-
mktime() and gmmktime() functions
no longer accept
is_dst parameter.
-
preg_replace() function no longer supports
"\e" (
PREG_REPLACE_EVAL). preg_replace_callback()
should be used instead.
-
setlocale() function no longer accepts
category
passed as string. LC_* constants must be used instead.
-
exec(), system() and passthru()
functions have NULL byte protection now.
-
substr() now returns an empty string, if string is equal
to start characters long.
-
xml_set_object() now requires to manually unset the
$parser when finished, to avoid memory leaks.
Коментарии
substr() behavior is also changed in php 7:
If string is equal to start characters long, an empty string will be returned. Prior to this version (7), FALSE was returned in this case.
function.substr