What are the common mistakes made when passing image source data between HTML and PHP files?

Common mistakes when passing image source data between HTML and PHP files include not properly escaping the data, not checking for file existence, and not sanitizing the input to prevent security vulnerabilities. To solve this, use functions like htmlspecialchars() to escape the data, check if the file exists before displaying it, and sanitize the input using functions like filter_input(). 

// Example of passing image source data between HTML and PHP files

// Retrieve image source data from HTML form
$imageSrc = htmlspecialchars($_POST['image_src']);

// Check if the file exists
if (file_exists($imageSrc)) {
    // Display the image
    echo '<img src="' . $imageSrc . '" alt="Image">';
} else {
    echo 'Image not found';
}

Keywords

HTML PHP image source data passing mistakes

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