What is the potential issue with using the rand() function in PHP when generating a random number for an image?

The potential issue with using the rand() function in PHP when generating a random number for an image is that it may not be truly random and could lead to predictable patterns. To solve this issue, you can use the random_int() function in PHP, which provides a more secure and cryptographically secure way of generating random numbers.

$randomNumber = random_int(1, 100); // Generates a random number between 1 and 100
echo $randomNumber;