警告，“ number_format（）期望参数1为双精度，给定字符串 [英] warning, "number_format() expects parameter 1 to be double, string given

问题描述

我从此行收到此错误，谁能告诉我谁可以解决此问题。

I get this error from this line can anyone tell me who can resolve this problem.

function format_numeric($str) {

    if(empty($str) && $str!=0) return;
    global $appearance_settings;
    $decimals = $appearance_settings['number_format_decimals'];
    $point = $appearance_settings['number_format_point'];
    $th_separator = $appearance_settings['number_format_separator'];
    $result = number_format($str, $decimals, $point, $th_separator); //THIS IS THE LINE WITH THE ERROR
    return $result;

}

推荐答案

从您的变量名称中，您正在向此函数传递字符串，但是如消息所示， number_format（）需要 double 。

Judging by your variable names you're passing a string into this function, but as the message says, number_format() requires a double.

您可以通过添加

$str = floatval($str);

作为函数的第一行。

这假设您的 $ str 变量包含可以强制为 double 的变量。如果不是这样，您可能会看到其他错误。

This assumes that your $str variable contains something that can be coerced to a double. If it doesn't you might see other errors.

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