我想减去两个货币数字

Question

I want to subtract two numbers but both of them have currency. (25$-10$)

<?php
    $tamount= $agreementdata['amount'];
    $eamount= $agreementdata['earnestamount'];
    $ramount= $agreementdata['amount'-'earnestamount'];  
    echo $ramount;
?> 

Answer 1

  $currencyFrom = '25$';
  $currency = '20$';
  $results = (int)substr($currencyFrom, 0, -1) - (int)substr($currency, 0, -1);
  echo $results;

I hope this will answer your question. Please mark it accepted if you are agree with the solution and idea.

Answer 2

From

https://www.php.net/manual/en/language.types.integer.php

Converting to integer : From strings

If the string is numeric or leading numeric then it will resolve to the corresponding integer value, otherwise it is converted to zero (0).

So (int)'25$' will return 25 , and add the dollar sign back on so that it can be understood by the array.

echo (int)'25$'-(int)'20$'.'$';

Answer 3

<?php
    $tamount= $agreementdata['amount'];
    $eamount= $agreementdata['earnestamount'];
    $ramount=  $tamount - $eamount;

    echo $ramount;
?>

Answer 4

If you want more flexibility, I would work with regex.

$str = '25$ 10Rupiah 25 $ 10 Rupiah';
$pattern = '/[A-Z|\$]*/i'; 
echo preg_replace($pattern, '', $str);

// output 25 10 25  10 

That will look for your case:

<?php
    function getAmount($str) {
       $pattern = '/[A-Z|\$]*/i'; 
       return (int) preg_replace($pattern, '', $str);
    }

    $tamount= getAmount( $agreementdata['amount'] );
    $eamount= getAmount( $agreementdata['earnestamount'] );
    $ramount= $agreementdata['amount'-'earnestamount'];  
    echo $ramount;
?>