Why output ($h) not displayed? I don't want to delete (function)
please correct it.
Here is my code:
<?php
$x = 5 . "*";
$y = 10 . "=";
function myTest() {
global $x, $y;
$h = $x + $y; //new variable
}
myTest(); // run function
echo $x . $y . $h; // output the value
?>
$h
only has scope inside the test
function. To get the $h
value, you could either make $h
global, or preferably return the value from the myTest function.
Note: the function should normally be a self-contained unit. By giving globals scope inside the function (using global $x, $y
) introduces un-needed and possibly harmful dependencies to code. The code below is an example only to illustrate the solution to your question.
function myTest() {
global $x, $y;
return $x + $y;
}
$h = myTest();