我在尝试使用存款功能更新余额时遇到问题。基本上,每次我以 html 格式提交要存入的金额时,我都会尝试更新我的 $balance 变量的值。问题是,它似乎只是更新下一个值而不是添加到余额中。
我已经通过添加值作为参数并多次调用该方法直接尝试了这个(不使用表单),它增加了我的总余额的值。我唯一的问题是尝试使用表单 $_Post 来传递作为参数输入的任何内容。
<?php
class BankAccount{
private $balance = 0;
private $name='Bob';
private $date;
public function getName(){
return $this->name;
}
public function getDate(){
$this->date = date("m.d.y");
return $this->date;
}
public function getBalance(){
if(($this->balance) > 0){
return $this -> balance;
} else if(($this->balance) <= 0 ){
return 'Balance is empty ';
}else{
return 'error';
}
}
public function Deposit($amount){
$this->balance = $this->balance + $amount;
}
public function Withdraw($amount){
if(($this->balance) < $amount){
echo 'Not enough funds to withdraw. ';
} else{
$this->balance = $this->balance - $amount;
}
}
}
$money=0;
if(isset($_POST['deposit'])){ $money = $_POST['deposit'];}
//Instance of class
$bank = new BankAccount;
//Get Balance
//echo $bank ->getBalance();
//Deposit
$bank ->Deposit(50);
$bank ->Deposit(50);
$bank ->Deposit($money);
//Withdraw
//$bank ->Withdraw(30);
?>
<html>
<body>
<form name="Bank" method="POST" style="margin-top:25px;">
<label style="color:red;">Name: </label><?php echo $bank ->getName(); ?><br>
<label style="color:red;">Date: </label><?php echo $bank ->getDate(); ?><br>
<label style="color:red;">Balance: </label><?php echo $bank->getBalance(); ?><br>
<label>Deposit</label>
<input type="text" name="deposit" maxlength="25"><br>
<input type="submit" value="submit" ><br>
</form>
</body>
</html>