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|
--TEST--
Test mb_substr() function : usage variations - pass unexpected arguments (including strings) in place of $str
--SKIPIF--
<?php
extension_loaded('mbstring') or die('skip');
function_exists('mb_substr') or die("skip mb_substr() is not available in this build");
?>
--FILE--
<?php
/* Prototype : string mb_substr(string $str, int $start [, int $length [, string $encoding]])
* Description: Returns part of a string
* Source code: ext/mbstring/mbstring.c
*/
/*
* Pass different data types as $str to mb_substr() to test behaviour
*/
echo "*** Testing mb_substr() : usage variations ***\n";
// Initialise function arguments not being substituted
$start = 0;
$length = 5;
//get an unset variable
$unset_var = 10;
unset ($unset_var);
// get a class
class classA
{
public function __toString() {
return "Class A object";
}
}
// heredoc string
$heredoc = <<<EOT
hello world
EOT;
// get a resource variable
$fp = fopen(__FILE__, "r");
// unexpected values to be passed to $str argument
$inputs = array(
// int data
/*1*/ 0,
1,
12345,
-2345,
// float data
/*5*/ 10.5,
-10.5,
12.3456789000e10,
12.3456789000E-10,
.5,
// null data
/*10*/ NULL,
null,
// boolean data
/*12*/ true,
false,
TRUE,
FALSE,
// empty data
/*16*/ "",
'',
// string data
/*18*/ "string",
'string',
$heredoc,
// object data
/*21*/ new classA(),
// undefined data
/*22*/ @$undefined_var,
// unset data
/*23*/ @$unset_var,
// resource variable
/*24*/ $fp
);
// loop through each element of $inputs to check the behavior of mb_substr()
$iterator = 1;
foreach($inputs as $input) {
echo "\n-- Iteration $iterator --\n";
var_dump( mb_substr($input, $start, $length));
$iterator++;
};
fclose($fp);
echo "Done";
?>
--EXPECTF--
*** Testing mb_substr() : usage variations ***
-- Iteration 1 --
string(1) "0"
-- Iteration 2 --
string(1) "1"
-- Iteration 3 --
string(5) "12345"
-- Iteration 4 --
string(5) "-2345"
-- Iteration 5 --
string(4) "10.5"
-- Iteration 6 --
string(5) "-10.5"
-- Iteration 7 --
string(5) "12345"
-- Iteration 8 --
string(5) "1.234"
-- Iteration 9 --
string(3) "0.5"
-- Iteration 10 --
string(0) ""
-- Iteration 11 --
string(0) ""
-- Iteration 12 --
string(1) "1"
-- Iteration 13 --
string(0) ""
-- Iteration 14 --
string(1) "1"
-- Iteration 15 --
string(0) ""
-- Iteration 16 --
string(0) ""
-- Iteration 17 --
string(0) ""
-- Iteration 18 --
string(5) "strin"
-- Iteration 19 --
string(5) "strin"
-- Iteration 20 --
string(5) "hello"
-- Iteration 21 --
string(5) "Class"
-- Iteration 22 --
string(0) ""
-- Iteration 23 --
string(0) ""
-- Iteration 24 --
Warning: mb_substr() expects parameter 1 to be string, resource given in %s on line %d
NULL
Done
|
