What are the security implications of passing variables through URLs in PHP?

Passing variables through URLs in PHP can pose security risks, as it makes the data visible and easily accessible to users. This can lead to potential security vulnerabilities such as injection attacks or exposing sensitive information. To mitigate these risks, it is recommended to use POST method instead of GET method when passing sensitive data through forms. 

<form method="post" action="process.php">
    <input type="text" name="username">
    <input type="password" name="password">
    <input type="submit" value="Submit">
</form>

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Security implications passing variables URLs PHP

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