function calls

[Anon]

Just a quick question. Does anyone know if it's possible to know where a function was called from? Like if I want a function to check to see if it was called from another specific function, if not, then exit. Is that possible?

[tomhath]

Probably be better to just pass in an extra parameter you can check.

[Anon]

Like tomhath writes, an obvious solution is to add another parameter.

However, I don't quite see why you want this. In case you're tired, and call a function from the wrong place?

You could call this function with;

test(5, 9, 'functionX');

function test($x, $y, $calledfrom='') {

switch ($calledfrom) {
case '': {
// Not specified, do something.
break;
}
case 'functionX': {
// From functionX, do something else
break;
}
default: {
// Unknown caller
break;
}
}

}