Question

Please is there a way i can make my error display dynamic for only the fields that have errors display under each textbox.

The I normally use displays only one error for all of the fields when one field is empty…

Thanks

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

    $a = mysql_real_escape_string($_POST      ['a']);

   $b = mysql_real_escape_string($_POST       ['b']);

    $c = mysql_real_escape_string($_POST      ['c']);

    $d = mysql_real_escape_string($_POST      ['d']);

    $e = mysql_real_escape_string($_POST      ['e']);


if (($a == "") ||  ($b == "") || ($c == "") ||        ($d == "") || ($e == "")) {

               echo "<div id=\"content\" >" ;
               echo "<div class=\"error\" >" ;  
               echo "empty"; 
               echo "</div>";
               echo "</div>";
            } else { 

 $query = "INSERT INTO user (a, b, c, d, e)
                   VALUES ($a, $b, $c, $d, $e)";
                   mysql_query($query);          


                  }
             }

             ?>

    Enter Texts <br/>
     <form action="<?php echo $_SERVER        ['PHP_SELF']; ?>" method="post"> 

 A:<input type="text"  name="a" ><br/>
 B:<input type="text"  name="b" ><br/>
 C:<input type="text"  name="c" ><br/>
 D:<input type="text"  name="d" ><br/>
 E:<input type="text"  name="e" ><br/>

                    <input type="submit" name           ="submit" value="Go"/> 
     </form>

thank you.

Answer 1

Here is an alternative way todo it, checking and building upon an error array as you go, then if the error array is empty do query.

<?php
//Check form was posted
if($_SERVER['REQUEST_METHOD']=='POST'){
    //Pre build allowed array
    $allowed=array('a','b','c','d','e','submit');
    //Pre build errors array
    $errors=array('A was not set',
                  'B was not set',
                  'C was not set',
                  'D was not set',
                  'E was not set');
    //Create Blank error array    
    $error=array();
    //Loop through the POST
    foreach($_POST as $key=>$value){
        //If key is in allowed array
        if(in_array($key,$allowed)){
            //Check its at good length
            if(strlen(trim($value)) >= 1){
                //Assign variable variable the key and value + escape
                $$key = mysql_real_escape_string(trim($value));
            }else{
                //Assign key/value null
                $$key = null;
                //Assign the error from the errors array to the output error array
                $error[$key] = $errors[array_search($key,$allowed)];
            }
        }else{
            $error=array('Rouge POST key');
        }
    }

    //If all is good do query
    if(empty($error)){
        $query = "INSERT INTO user (a, b, c, d, e)
                   VALUES ($a, $b, $c, $d, $e)";
        mysql_query($query);
    }

}?>

Enter Texts <br/>
<form action="" method="post"> 

 A:<input type="text"  name="a" ><?php echo (isset($error['a'])?$error['a']:null)?><br/>
 B:<input type="text"  name="b" ><?php echo (isset($error['b'])?$error['b']:null)?><br/>
 C:<input type="text"  name="c" ><?php echo (isset($error['c'])?$error['c']:null)?><br/>
 D:<input type="text"  name="d" ><?php echo (isset($error['d'])?$error['d']:null)?><br/>
 E:<input type="text"  name="e" ><?php echo (isset($error['e'])?$error['e']:null)?><br/>
 <input type="submit" name="submit" value="Go"/> 
</form>