Home  >  Article  >  Backend Development  >  去除php注释和去除空格函数分享_php实例

去除php注释和去除空格函数分享_php实例

WBOY
WBOYOriginal
2016-05-17 08:47:26999browse

虽然php5中已有php_strip_whitespace方法可以返回删除注释和空格后的PHP源码的功能,为了学习,这里为大家提供一个自己的方法,也可以去除代码中的空白和注释,代码如下:

复制代码 代码如下:

/**
 * 去除代码中的空白和注释
 * @param string $content 代码内容
 * @return string
 */
function strip_whitespace($content) {
    $stripStr   = '';
    //分析php源码
    $tokens     = token_get_all($content);
    $last_space = false;
    for ($i = 0, $j = count($tokens); $i         if (is_string($tokens[$i])) {
            $last_space = false;
            $stripStr  .= $tokens[$i];
        } else {
            switch ($tokens[$i][0]) {
                //过滤各种PHP注释
                case T_COMMENT:
                case T_DOC_COMMENT:
                    break;
                //过滤空格
                case T_WHITESPACE:
                    if (!$last_space) {
                        $stripStr  .= ' ';
                        $last_space = true;
                    }
                    break;
                case T_START_HEREDOC:
                    $stripStr .= "                    break;
                case T_END_HEREDOC:
                    $stripStr .= "THINK;\n";
                    for($k = $i+1; $k                         if(is_string($tokens[$k]) && $tokens[$k] == ';') {
                            $i = $k;
                            break;
                        } else if($tokens[$k][0] == T_CLOSE_TAG) {
                            break;
                        }
                    }
                    break;
                default:
                    $last_space = false;
                    $stripStr  .= $tokens[$i][1];
            }
        }
    }
    return $stripStr;
}
Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn