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PHP improve my IF statements


kayz100
Go to solution Solved by PaulRyan,

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Hi guys

i am busy playing around with php if statements. The code below works fine as it is but I am having problems trying to gt it to work inside an input field please help

 

<?php
$number1 = "01234";
$number2 = "012345";


if($number1 != $number2) {
//if they don't match output the following
echo "info do not match. Please try again.";
}else{ 
//if they match output the following
echo "Info matched Successfully!";
exit();
}
?>
 
Now how do I tweak my above php code to incorporate the code above for easy input into fields?
$number1 = "01234";
$number2 = "012345";
Please help?
<form method="post" name="change">
<p>Number 1 Info<br />
<input type="text" name="number1" />
</p>
<p>Number 2 Info<br />
<input type="text" name="number2" />
</p>
<p>
<input name="submit" type="submit" value="Check if they match" />
</p>
</form>

 

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If you're looking to display the form when $number1 doesn't match $number2, just put the form in the if portion.

 

 

<?php
$number1 = "01234";
$number2 = "012345";
 
 
if($number1 != $number2) {
     //if they don't match output the following
     //echo "info do not match. Please try again.";
     ?>
     <form method="post" name="change">
     <p>Number 1 Info<br />
     <input type="text" name="number1" />
     </p>
     <p>Number 2 Info<br />
     <input type="text" name="number2" />
     </p>
     <p>
     <input name="submit" type="submit" value="Check if they match" />
     </p>
     </form>
     <?php
} else { 
     //if they match output the following
     echo "Info matched Successfully!";
     exit();
}
?>
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  • Solution

Try this:

 

<?PHP

  //### Check if form has been posted
  if($_SERVER['REQUEST_METHOD'] == 'POST') {
 
    //### Assign incoming numbers
    $number1 = isset($_POST['number_1']) ? $_POST['number_1'] : NULL ;
    $number2 = isset($_POST['number_2']) ? $_POST['number_2'] : NULL ;
    
    //### Check to see if either field is empty
    if($number1 == NULL) {
      $message = 'Number 1 field is empty.';
    } else if($number2 == NULL) {
      $message = 'Number 2 field is empty.';
    } else {
    
      //### Check if numbers match
      if($number1 == $number2) {
        $message = 'Yes, those numbers match.';
      } else {
        $message = 'No, those do not numbers match.';
      }      
    }
  }
?>

<form method="POST">
<?PHP if(isset($message)) { echo '<p>'. $message .'</p>'; } ?>
<p>
  Number 1 Info <br>
  <input type="text" name="number_1" value="<?PHP if(isset($number1)) { echo htmlentities($number1, ENT_QUOTES); } ?>">
</p>
<p>
  Number 2 Info <br>
  <input type="text" name="number_2" value="<?PHP if(isset($number2)) { echo htmlentities($number2, ENT_QUOTES); } ?>">
</p>
<p>
  <input type="submit" value="Check if they match?">
</form>
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