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--TEST--
Test array_walk() function : usage variations - buit-in function as callback
--FILE--
<?php
/*
* Passing different buit-in functionns as callback function
* pow function
* min function
* echo language construct
*/
echo "*** Testing array_walk() : built-in function as callback ***\n";
$input = array(2 => 1, 65, 98, 100, 6 => -4);
echo "-- With 'pow' built-in function --\n";
var_dump( array_walk($input, 'pow'));
echo "-- With 'min' built-in function --\n";
var_dump( array_walk($input, "min"));
echo "-- With 'echo' language construct --\n";
try {
var_dump( array_walk($input, "echo"));
} catch (TypeError $e) {
echo $e->getMessage(), "\n";
}
echo "Done"
?>
--EXPECT--
*** Testing array_walk() : built-in function as callback ***
-- With 'pow' built-in function --
bool(true)
-- With 'min' built-in function --
bool(true)
-- With 'echo' language construct --
array_walk(): Argument #2 ($callback) must be a valid callback, function "echo" not found or invalid function name
Done
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