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--TEST--
Test is_callable() function : usage variations - undefined functions
--INI--
precision=14
error_reporting = E_ALL & ~E_NOTICE | E_STRICT
--FILE--
<?php
/* Prototype: bool is_callable ( mixed $var [, bool $syntax_only [, string &$callable_name]] );
Description: Verify that the contents of a variable can be called as a function
In case of objects, $var = array($SomeObject, 'MethodName')
*/
/* Prototype: void check_iscallable( $functions );
Description: use iscallable() on given string to check for valid function name
returns true if valid function name, false otherwise
*/
function check_iscallable( $functions ) {
$counter = 1;
foreach($functions as $func) {
echo "-- Iteration $counter --\n";
var_dump( is_callable($func) ); //given only $var argument
var_dump( is_callable($func, TRUE) ); //given $var and $syntax argument
var_dump( is_callable($func, TRUE, $callable_name) );
echo $callable_name, "\n";
var_dump( is_callable($func, FALSE) ); //given $var and $syntax argument
var_dump( is_callable($func, FALSE, $callable_name) );
echo $callable_name, "\n";
$counter++;
}
}
echo "\n*** Testing is_callable() on undefined functions ***\n";
$undef_functions = array (
"", //empty string
'',
" ", //string with a space
' ',
"12356",
"\0",
'\0',
"hello world",
'hello world',
"welcome\0",
'welcome\0',
"==%%%***$$$@@@!!",
"false",
"\070",
'\t', //escape character
'\007',
'123',
'echo()'
);
/* use check_iscallable() to check whether given string is valid function name
* expected: true with $syntax = TRUE
* false with $syntax = FALSE
*/
check_iscallable($undef_functions);
?>
===DONE===
--EXPECTF--
*** Testing is_callable() on undefined functions ***
-- Iteration 1 --
bool(false)
bool(true)
bool(true)
bool(false)
bool(false)
-- Iteration 2 --
bool(false)
bool(true)
bool(true)
bool(false)
bool(false)
-- Iteration 3 --
bool(false)
bool(true)
bool(true)
bool(false)
bool(false)
-- Iteration 4 --
bool(false)
bool(true)
bool(true)
bool(false)
bool(false)
-- Iteration 5 --
bool(false)
bool(true)
bool(true)
12356
bool(false)
bool(false)
12356
-- Iteration 6 --
bool(false)
bool(true)
bool(true)
bool(false)
bool(false)
-- Iteration 7 --
bool(false)
bool(true)
bool(true)
\0
bool(false)
bool(false)
\0
-- Iteration 8 --
bool(false)
bool(true)
bool(true)
hello world
bool(false)
bool(false)
hello world
-- Iteration 9 --
bool(false)
bool(true)
bool(true)
hello world
bool(false)
bool(false)
hello world
-- Iteration 10 --
bool(false)
bool(true)
bool(true)
welcome
bool(false)
bool(false)
welcome
-- Iteration 11 --
bool(false)
bool(true)
bool(true)
welcome\0
bool(false)
bool(false)
welcome\0
-- Iteration 12 --
bool(false)
bool(true)
bool(true)
==%%%***$$$@@@!!
bool(false)
bool(false)
==%%%***$$$@@@!!
-- Iteration 13 --
bool(false)
bool(true)
bool(true)
false
bool(false)
bool(false)
false
-- Iteration 14 --
bool(false)
bool(true)
bool(true)
8
bool(false)
bool(false)
8
-- Iteration 15 --
bool(false)
bool(true)
bool(true)
\t
bool(false)
bool(false)
\t
-- Iteration 16 --
bool(false)
bool(true)
bool(true)
\007
bool(false)
bool(false)
\007
-- Iteration 17 --
bool(false)
bool(true)
bool(true)
123
bool(false)
bool(false)
123
-- Iteration 18 --
bool(false)
bool(true)
bool(true)
echo()
bool(false)
bool(false)
echo()
===DONE===