What steps can be taken to ensure that all variables in a PHP script are properly utilized and displayed as intended?

To ensure that all variables in a PHP script are properly utilized and displayed as intended, it is important to first make sure that all variables are properly initialized and assigned values before using them. Additionally, it is crucial to properly sanitize and validate user input to prevent any potential security vulnerabilities. Lastly, using proper error handling techniques such as checking for undefined variables and displaying meaningful error messages can help in debugging and ensuring the script runs smoothly. 

<?php

// Initialize and assign values to variables
$name = "John";
$age = 30;

// Sanitize and validate user input
$email = filter_var($_POST['email'], FILTER_SANITIZE_EMAIL);

// Display variables as intended
echo "Name: " . $name . "<br>";
echo "Age: " . $age . "<br>";
echo "Email: " . $email;

?>

Keywords

variable utilization PHP script error handling debugging data validation

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