database .txt PHP redirect-CodePudding

Good evening I would like to be able to redirect pages in php via my database in txt but I am stuck at this level:

Database

`id|pagea|pageb|pagec;

1|on|on|on|;`

Redirection.php

$data = file_get_contents("database.txt");
$rows = explode("\n", $data);
$rows = array_map("trim", $rows);
$rowCount = count($rows);

function CountCol($data){
    $col = explode("|", $data);
    return count($col);

}
  

 for ($i=2; $i <$rowCount-1 ; $i  ) { 
     for ($j=0; $j < CountCol($rows[$i]) ; $j  ) { 
         $column = explode("|", $rows[$i]);

         $id[$i-2]  = $column[0];
         $pagea[$i-2]  = $column[1];
         $pageb[$i-2]  = $column[2];
         $pagec[$i-2]  = $column[3];
    
     }
        
  
 }

$redirectiona = $pagea[1];
$redirectionb  = $pageb[1];
$redirectionc = $pagec[1];

    
    
if($redirectiona = "on"){
        header('location: 1.php');
    }
if($redirectionb = "on"){
        header('location: 2.php');
    
    }
if($redirectionc = "on"){
        header('location: 3.php');
    }

It's not working

CodePudding user response：

Assuming that the database.txt contains only 1 line of data like the following:

1|on|on|on|;

Then

there is no need to explode on "\n". Instead just explode on "|" to assign the exploded data into an array
you should use == (is equal to) instead of = in your comparison statements (= is an assignment operator : the left operand gets set to the value of the assignment expression on the right)
as a good practice, put exit(); after each header location statement

Then the code will be:

<?php

$data = file_get_contents("database.txt");
$rows = explode("|", $data);

$redirectiona = $rows[1];
$redirectionb = $rows[2];
$redirectionc = $rows[3];
    
if($redirectiona == "on"){
        header('location: 1.php');
        exit();
    }
if($redirectionb == "on"){
        header('location: 2.php');
        exit();    
    }
if($redirectionc == "on"){
        header('location: 3.php');
        exit();
    }
?>

CodePudding user response：

Thank you for your reply. I had put a first line to be able to more easily modify the values of the switch button. But in this case to modify these values from another page setting via:

<label >
  <input type="checkbox" name="switcha">
  <div ></div>
</label>

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

}

<label >
  <input type="checkbox" name="switchb">
  <div ></div>
</label>

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

}

How do I change only the desired value via this switch button ? Thank you in any case for taking the time to answer me