Php

Question

我试图将标记百分比添加到每英里$美分，由于某种原因它忽略了它。 如何创建一个var，我可以输入百分比的整数并将其添加到成本中？

<?php 
$PriceofgallonGas = 2.59 ;
$precent = 50 ; 
?>



<?php
    function installVanFuel() {

        global $PriceofgallonGas,$precent;
        $TankMiles = 254;   
        $SizeofTankinGallons = 31;
        $mpg = $TankMiles / $SizeofTankinGallons;

        $markup = (1 + $percent/100);
        $centsPerMile = $PriceofgallonGas/$mpg;  
        echo round($centsPerMile*$markup, 2); 
    }
?>  

Answer 1

你有拼写错误，请检查。

在$markup = (1 + $percent/100);，您错过拼写变量$percent。

$PriceofgallonGas = 2.59 ;
$precent = 50 ; 

function installVanFuel() { 
    global $PriceofgallonGas, $precent;
    $TankMiles = 254;   
    $SizeofTankinGallons = 31;
    $mpg = $TankMiles / $SizeofTankinGallons;

    $markup = (1 + $precent/100);
    $centsPerMile = $PriceofgallonGas/$mpg;  
    echo round($centsPerMile*$markup, 2)." Cents x ".$precent."%"; //0.47 Cents x 50%
}
installVanFuel();