Question

所以在表格中我有这个输入

<input type="text" name="squareFoot" value="<?PHP if(isset($_POST['squareFoot'])) echo $squareFoot ?>"><span class="error_message"><?PHP echo " " . $squareFootError; ?></span>

这是我的验证（在表格之上是肯定的）

if(isset($_POST['submit'])){

        $isSubmitted = true;

        $squareFoot = $_POST['squareFoot'];
        $squareFoot = filter_var($squareFoot, FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION);
        $squareFoot = filter_var($squareFoot, FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_THOUSAND);
        $squareFoot = filter_var($squareFoot, FILTER_SANITIZE_SPECIAL_CHARS);

        if(!is_numeric($squareFoot)){
            $isValid = false;
            $squareFootError = "Please enter a numeric value";
        }

        else if(empty($squareFoot)){
            $isValid = false;
            $squareFootError = "Please enter a numeric value";
        }

        else if($squareFoot < 200){
            $isValid = false;
            $squareFootError = "Please enter a number between 200 and 500,000"; 
        }

        else if($squareFoot > 500000){
            $isValid = false;
            $squareFootError = "Please enter a number between 200 and 500,000";
        }

        else{
/// do math (code not shown)


// Format Square Footage 
            $squareFootFormat = number_format($squareFoot, 0, '', ',');

// Display to user
<p>1. Square Footage being stripped <span class="right_al"><?PHP echo $squareFootFormat; ?></span></p>

所以我设置它以便用户不能输入html或脚本，用户必须输入一个必须在两个数字之间的数字，并且该数字可以有一个逗号。

我还希望用户能够输入500.5这样的东西，但是当测试500.5变成5,005时。

是因为 $ squareFootFormat = number_format（$ squareFoot，0，＆＃39;＆＃39;，＆＃39;，＆＃39;）;

或者它有什么不对吗？我有点想保留number_format（），因为它使数字更容易阅读，如果它有一些像100,000这样的大数字。我能这样做吗？谢谢你的帮助。

Answer 1

您的filter_var不允许将500.5作为值。

$squareFoot = filter_var($squareFoot, FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_THOUSAND);

Answer 2

仅这样做：

<?php


$squareFoot = $_POST['squareFoot'];
$smallest = 1;
$greatest = 100000;
    if(is_numeric($squareFoot)) {
        if($squareFoot < $greatest && $squareFoot > $smallest) {
            //do what you want
            echo number_format($squareFoot, 1, '.', ',');
        }
        else {
            echo "Please enter a number between " .$smallest . " and ".$greatest;
        }
    }
    else {
        echo "Please enter a numeric value";
    }
?>

对我来说看起来更简单。

PHP验证有点工作但是

2 个答案: