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|
--TEST--
Test ltrim() function : usage variations - test values for $charlist argument
--FILE--
<?php
/* Prototype : string ltrim ( string $str [, string $charlist ] )
* Description: Strip whitespace (or other characters) from the beginning of a string.
* Source code: ext/standard/string.c
*/
echo "*** Testing ltrim() function: with unexpected inputs for 'charlist' argument ***\n";
//get an unset variable
$unset_var = ' string_val ';
unset($unset_var);
//defining a class
class sample {
public function __toString() {
return " sample object ";
}
}
//getting the resource
$file_handle = fopen(__FILE__, "r");
// array with different values for $input
$inputs = array (
// integer values
/*1*/ 0,
1,
255,
256,
2147483647,
-2147483648,
// float values
/*7*/ 10.5,
-20.5,
10.1234567e10,
// array values
/*10*/ array(),
array(0),
array(1, 2),
// boolean values
/*13*/ true,
false,
TRUE,
FALSE,
// null values
/*17*/ NULL,
null,
// objects
/*19*/ new sample(),
// resource
/*20*/ $file_handle,
// undefined variable
/*21*/ @$undefined_var,
// unset variable
/*22*/ @$unset_var
);
// loop through with each element of the $inputs array to test ltrim() function
$count = 1;
foreach($inputs as $charlist) {
echo "-- Iteration $count --\n";
// strip white space and any "minus" signs
var_dump( ltrim("!---Hello World---!", $charlist) );
$count ++;
}
fclose($file_handle); //closing the file handle
?>
===DONE===
--EXPECTF--
*** Testing ltrim() function: with unexpected inputs for 'charlist' argument ***
-- Iteration 1 --
string(19) "!---Hello World---!"
-- Iteration 2 --
string(19) "!---Hello World---!"
-- Iteration 3 --
string(19) "!---Hello World---!"
-- Iteration 4 --
string(19) "!---Hello World---!"
-- Iteration 5 --
string(19) "!---Hello World---!"
-- Iteration 6 --
string(19) "!---Hello World---!"
-- Iteration 7 --
string(19) "!---Hello World---!"
-- Iteration 8 --
string(19) "!---Hello World---!"
-- Iteration 9 --
string(19) "!---Hello World---!"
-- Iteration 10 --
Warning: ltrim() expects parameter 2 to be string, array given in %s on line %d
NULL
-- Iteration 11 --
Warning: ltrim() expects parameter 2 to be string, array given in %s on line %d
NULL
-- Iteration 12 --
Warning: ltrim() expects parameter 2 to be string, array given in %s on line %d
NULL
-- Iteration 13 --
string(19) "!---Hello World---!"
-- Iteration 14 --
string(19) "!---Hello World---!"
-- Iteration 15 --
string(19) "!---Hello World---!"
-- Iteration 16 --
string(19) "!---Hello World---!"
-- Iteration 17 --
string(19) "!---Hello World---!"
-- Iteration 18 --
string(19) "!---Hello World---!"
-- Iteration 19 --
string(19) "!---Hello World---!"
-- Iteration 20 --
Warning: ltrim() expects parameter 2 to be string, resource given in %s on line %d
NULL
-- Iteration 21 --
string(19) "!---Hello World---!"
-- Iteration 22 --
string(19) "!---Hello World---!"
===DONE===
|
