What are the implications of using comments between curly braces in PHP code blocks?

Using comments between curly braces in PHP code blocks can lead to syntax errors or unexpected behavior because PHP interprets the curly braces as part of the code block. To avoid this issue, it's recommended to use standard comment syntax (// or /* */) for comments within code blocks.

// Incorrect usage of comments within code block
if ($condition) {
    // This is a comment { do something }
}

// Correct usage of comments within code block
if ($condition) {
    // This is a comment
    // do something
}