未定义函数 (PHP)
undefined function (PHP)
如果有人帮我找出这段代码中的错误,我将不胜感激:
函数 'freightPrice'(如下所示)位于名为 'freight.php' 的文件中,该文件位于 'main.php' 上的 required_once。
当我从 'main.php' 调用函数 'freightPrice' 时,我收到以下消息:
main.php - "Undefined function 'FreightPrice'".
freightPrice.php - "Variable 'FreightPrice' might have not been defined".
freightPrice.php - "Undefined variable 'FreightPrice'".
<?php
// file freightPrice.php
// FREIGHT CALCULATION
function FreightPrice($weight) {
$PriceList = array(
0 => 0,
1 => 50.65,
2 => 52.51,
3 => 55.47,
4 => 58.43,
5 => 61.39,
6 => 63.21,
7 => 66.01,
8 => 68.82,
9 => 71.63,
10 => 74.40
);
for ($i = 0; $i <= 66; $i++) {
if ($i == round($weight, 0)) {
$freightPrice = $PriceList[$i];
break;
}
}
return $freightPrice;
}
freightPrice(60);
echo $freightPrice;
?>
改成这个。注意函数名称上的大写 F 以修复第一个错误。变量 $freightPrice
仅存在于函数范围内,因此您需要将其 return 转换为当前范围内变量的新版本。
$freightPrice = FreightPrice(60);
echo $freightPrice;
从您的代码片段中不太确定您要实现的目标...
首先,
freightPrice(60); //doesn't point to a valid function (case-sensitive).
echo $freightPrice; //this is undefined in a global scape
我倾向于使用 include();代替函数。
因此,如果您想测试它,只需
include("freightPrice.php");
echo FreightPrice(60);
如果有人帮我找出这段代码中的错误,我将不胜感激:
函数 'freightPrice'(如下所示)位于名为 'freight.php' 的文件中,该文件位于 'main.php' 上的 required_once。 当我从 'main.php' 调用函数 'freightPrice' 时,我收到以下消息:
main.php - "Undefined function 'FreightPrice'".
freightPrice.php - "Variable 'FreightPrice' might have not been defined".
freightPrice.php - "Undefined variable 'FreightPrice'".
<?php
// file freightPrice.php
// FREIGHT CALCULATION
function FreightPrice($weight) {
$PriceList = array(
0 => 0,
1 => 50.65,
2 => 52.51,
3 => 55.47,
4 => 58.43,
5 => 61.39,
6 => 63.21,
7 => 66.01,
8 => 68.82,
9 => 71.63,
10 => 74.40
);
for ($i = 0; $i <= 66; $i++) {
if ($i == round($weight, 0)) {
$freightPrice = $PriceList[$i];
break;
}
}
return $freightPrice;
}
freightPrice(60);
echo $freightPrice;
?>
改成这个。注意函数名称上的大写 F 以修复第一个错误。变量 $freightPrice
仅存在于函数范围内,因此您需要将其 return 转换为当前范围内变量的新版本。
$freightPrice = FreightPrice(60);
echo $freightPrice;
从您的代码片段中不太确定您要实现的目标...
首先,
freightPrice(60); //doesn't point to a valid function (case-sensitive).
echo $freightPrice; //this is undefined in a global scape
我倾向于使用 include();代替函数。
因此,如果您想测试它,只需
include("freightPrice.php");
echo FreightPrice(60);