How can PHP beginners effectively troubleshoot issues with image display based on user input?

Issue: PHP beginners can troubleshoot issues with image display based on user input by validating the user input to ensure it is a valid image file and then displaying the image using the correct HTML syntax. 

<?php
// Get the user input for the image file
$user_image = $_POST['image'];

// Validate the user input to ensure it is a valid image file
if (getimagesize($user_image)) {
    // Display the image using the correct HTML syntax
    echo "<img src='$user_image' alt='User Image'>";
} else {
    echo "Invalid image file provided.";
}
?>

Keywords

PHP image display user input troubleshooting error handling

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