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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

60 lines
1.8 KiB
PHP

--TEST--
Test ltrim() function
--FILE--
<?php
/* Testing for Error conditions */
/* Invalid Number of Arguments */
echo "\n *** Output for Error Conditions ***\n";
/* heredoc string */
$str = <<<EOD
us
ing heredoc string
EOD;
echo "\n *** Using heredoc string ***\n";
var_dump( ltrim($str, "\nusi") );
/* Testing the Normal behaviour of ltrim() function */
echo "\n *** Output for Normal Behaviour ***\n";
var_dump ( ltrim(" \t\0 ltrim test") ); /* without second Argument */
var_dump ( ltrim(" ltrim test" , "") ); /* no characters in second Argument */
var_dump ( ltrim(" ltrim test", true) ); /* with boolean value as second Argument */
var_dump ( ltrim(" ltrim test", " ") ); /* with single space as second Argument */
var_dump ( ltrim("\t\n\r\0\x0B ltrim test", "\t\n\r\0\x0B") ); /* with multiple escape sequences as second Argument */
var_dump ( ltrim("ABCXYZltrim test", "A..Z") ); /* with characters range as second Argument */
var_dump ( ltrim("0123456789ltrim test", "0..9") ); /* with numbers range as second Argument */
var_dump ( ltrim("@$#ltrim test", "#@$") ); /* with some special characters as second Argument */
echo "\n *** Output for scalar argument) ***\n";
var_dump( ltrim( 12345 ) ); /* Scalar argument */
echo "\nDone\n";
?>
--EXPECT--
*** Output for Error Conditions ***
*** Using heredoc string ***
string(17) "ng heredoc string"
*** Output for Normal Behaviour ***
string(10) "ltrim test"
string(13) " ltrim test"
string(18) " ltrim test"
string(10) "ltrim test"
string(11) " ltrim test"
string(10) "ltrim test"
string(10) "ltrim test"
string(10) "ltrim test"
*** Output for scalar argument) ***
string(5) "12345"
Done