php-src/ext/standard/tests/strings/strtr_variation4.phpt
Nikita Popov b10416a652 Deprecate passing null to non-nullable arg of internal function
This deprecates passing null to non-nullable scale arguments of
internal functions, with the eventual goal of making the behavior
consistent with userland functions, where null is never accepted
for non-nullable arguments.

This change is expected to cause quite a lot of fallout. In most
cases, calling code should be adjusted to avoid passing null. In
some cases, PHP should be adjusted to make some function arguments
nullable. I have already fixed a number of functions before landing
this, but feel free to file a bug if you encounter a function that
doesn't accept null, but probably should. (The rule of thumb for
this to be applicable is that the function must have special behavior
for 0 or "", which is distinct from the natural behavior of the
parameter.)

RFC: https://wiki.php.net/rfc/deprecate_null_to_scalar_internal_arg

Closes GH-6475.
2021-02-11 21:46:13 +01:00

66 lines
1.3 KiB
PHP

--TEST--
Test strtr() function : usage variations - empty string & null for 'str' argument
--FILE--
<?php
/* Testing strtr() function by passing the
* empty string & null for 'str' argument and
* corresponding translation pair of chars for 'from', 'to' & 'replace_pairs' arguments
*/
echo "*** Testing strtr() : empty string & null for 'str' arg ***\n";
/* definitions of required input variables */
$count = 1;
$heredoc_str = <<<EOD
EOD;
//array of string inputs for $str
$str_arr = array(
"",
'',
FALSE,
false,
$heredoc_str
);
$from = "";
$to = "TEST";
$replace_pairs = array("" => "t", '' => "TEST");
/* loop through to test strtr() with each element of $str_arr */
for($index = 0; $index < count($str_arr); $index++) {
echo "-- Iteration $count --\n";
$str = $str_arr[$index]; //getting the array element in 'str' variable
//strtr() call in three args syntax form
var_dump( strtr($str, $from, $to) );
//strtr() call in two args syntax form
var_dump( strtr($str, $replace_pairs) );
$count++;
}
echo "*** Done ***";
?>
--EXPECT--
*** Testing strtr() : empty string & null for 'str' arg ***
-- Iteration 1 --
string(0) ""
string(0) ""
-- Iteration 2 --
string(0) ""
string(0) ""
-- Iteration 3 --
string(0) ""
string(0) ""
-- Iteration 4 --
string(0) ""
string(0) ""
-- Iteration 5 --
string(0) ""
string(0) ""
*** Done ***