Automatically Removing Comments from PHP Code
For efficient code maintenance and readability, it's often necessary to remove comments from PHP files. This can be a tedious process, but there are effective solutions available to streamline the task.
Tokenizer-Based Solution
Utilizing PHP's tokenizer offers a comprehensive approach to removing comments while preserving embedded HTML. Here's a detailed implementation:
<code class="php">$fileStr = file_get_contents('path/to/file');
$newStr = '';
$commentTokens = array(T_COMMENT);
if (defined('T_DOC_COMMENT')) {
$commentTokens[] = T_DOC_COMMENT; // PHP 5
}
if (defined('T_ML_COMMENT')) {
$commentTokens[] = T_ML_COMMENT; // PHP 4
}
$tokens = token_get_all($fileStr);
foreach ($tokens as $token) {
if (is_array($token)) {
if (in_array($token[0], $commentTokens)) {
continue;
}
$token = $token[1];
}
$newStr .= $token;
}
echo $newStr;</code>
Benefits:
- Preserves line breaks
- Maintains embedded HTML
- Detailed handling of different comment types
This solution produces the desired output by removing all comments while preserving the original code structure and embedded HTML. It caters to both PHP 4 and PHP 5 environments. By iterating through the tokens and selectively skipping comment tokens, the solution efficiently extracts the relevant code snippets.
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