<?php
// This function uses a callback function. The argument is a sub routine with a variable in it
$netTot = 50;
function vatTot($price, $sumtotal)
{
$vat = addVat($price);
$sumtotal($vat);
}
function addVat($netTot)
{
//Here it is
$gross = $netTot / 100 * 17;
return $gross;
}
// This is a sample callback function for doIt().
/*$data = 50;*/
function printSumTotal($data)
{
echo 'VAT is: ', $data, "\n";
}
// Call doIt() and pass our sample callback function's name.
vatTot($netTot, 'printSumTotal');
<?php
// This function uses a callback function. The argument is a sub routine with a variable in it
function vatTot($sumtotal)
{
/*$netTot = 50;*/
$data = addVat();
$sumtotal($data);
}
function addVat()
{
//Here it is
$gross = $data / 100 * 17;
return $gross;
}
// This is a sample callback function for vatTot().
/*$data = 50;*/
function printSumTotal($data)
{
$data = 50;
echo 'VAT is: ', $data, "\n";
}
// Call doIt() and pass our sample callback function's name.
vatTot('printSumTotal');