How can the issue of the value in the input field reverting back to the original value be resolved when updating the ini file in PHP?

Issue: The value in the input field reverts back to the original value because the form is being submitted with the original value instead of the updated value from the input field. To resolve this, we need to make sure that the updated value is saved in the ini file before rendering the form again. 

// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Update the value in the ini file
    $iniFile = 'config.ini';
    $key = 'input_field';
    $value = $_POST['input_field'];
    
    $config = parse_ini_file($iniFile);
    $config[$key] = $value;
    
    $data = '';
    foreach($config as $k => $v) {
        $data .= "$k = $v\n";
    }
    
    file_put_contents($iniFile, $data);
}

// Render the form with the updated value
$config = parse_ini_file('config.ini');
$defaultValue = $config['input_field'];
?>

<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
    <input type="text" name="input_field" value="<?php echo $defaultValue; ?>">
    <input type="submit" value="Submit">
</form>

Keywords

PHP input field value ini file updating

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