php获取方法的注释：首先打开相应的PHP文件；然后通过php中的反射机制，获取该类的文档注释；最后通过获取其所有的方法，获取方法的注释即可。
本文操作环境：windows7系统、PHP7.1版，DELL G3电脑
php反射获取类和方法中的注释
通过php中的反射机制，获取该类的文档注释，再通过获取其所有的方法，获取方法的注释
所用到的主要类及其方法
ReflectionClassReflectionClass::getDocCommentReflectionClass::getMethods $method->getName()$method->getDocComment();$method->isProtected();$method->getParameters(); $param->getName();$param->isDefaultValueAvailable();$param->getDefaultValue()
测试类如下：
test.php
<?phpheader("Content-type: text/html; charset=utf-8");require_once dir(__DIR__).'function.php';require_once dir(__DIR__).'TestClass.php'; $class_name = 'TestClass'; $reflection = new ReflectionClass ( $class_name );//通过反射获取类的注释$doc = $reflection->getDocComment ();//解析类的注释头$parase_result = DocParserFactory::getInstance()->parse ( $doc );$class_metadata = $parase_result; //输出测试var_dump ( $doc );echo "\r\n";print_r( $parase_result );echo "\r\n-----------------------------------\r\n"; //获取类中的方法，设置获取public,protected类型方法$methods = $reflection->getMethods(ReflectionMethod::IS_PUBLIC + ReflectionMethod::IS_PROTECTED + ReflectionMethod::IS_PRIVATE);//遍历所有的方法foreach ($methods as $method) { //获取方法的注释 $doc = $method->getDocComment(); //解析注释 $info = DocParserFactory::getInstance()->parse($doc); $metadata = $class_metadata + $info; //获取方法的类型 $method_flag = $method->isProtected();//还可能是public,protected类型的 //获取方法的参数 $params = $method->getParameters(); $position=0; //记录参数的次序 foreach ($params as $param){ $arguments[$param->getName()] = $position; //参数是否设置了默认参数，如果设置了，则获取其默认值 $defaults[$position] = $param->isDefaultValueAvailable() ? $param->getDefaultValue() : NULL; $position++; } $call = array( 'class_name'=>$class_name, 'method_name'=>$method->getName(), 'arguments'=>$arguments, 'defaults'=>$defaults, 'metadata'=>$metadata, 'method_flag'=>$method_flag ); print_r($call); echo "\r\n-----------------------------------\r\n";}function.php【推荐学习：《PHP视频教程》】
<?phprequire_once dir(__DIR__).'DocParser.php'; /** * 解析doc * 下面的DocParserFactory是对其的进一步封装，每次解析时，可以减少初始化DocParser的次数 * * @param $php_doc_comment * @return array */function parse_doc($php_doc_comment) { $p = new DocParser (); return $p->parse ( $php_doc_comment );} /** * Class DocParserFactory 解析doc * * @example * DocParserFactory::getInstance()->parse($doc); */class DocParserFactory{ private static $p; private function DocParserFactory(){ } public static function getInstance(){ if(self::$p == null){ self::$p = new DocParser (); } return self::$p; } }TestClass.php
<?php/** * A test class 在此处不能添加@ur,@param,@return 注释 * 如果要将类的注释和方法的注释合并的话，添加了上面的注释，会将方法中的注释给覆盖掉 */class TestClass { /** * @desc 获取public方法 * * @url GET pnrs * @param array $request_data * @return int id */ public function getPublicMethod($no_default,$add_time = '0000-00-00') { echo "public"; } /** * @desc 获取private方法 * * @url GET private_test * @return int id */ private function getPrivateMethod($no_default,$time = '0000-00-00') { echo "private"; } /** * @desc 获取protected方法 * * @url GET protected_test * @param $no_defalut,$time * @return int id */ protected function getProtectedMethod($no_default,$time = '0000-00-00') { echo "protected"; }}DocParser.php 该类源自一个开源项目
<?php/** * Parses the PHPDoc comments for metadata. Inspired by Documentor code base * @category Framework * @package restler * @subpackage helper * @author Murray Picton <该邮件地址已受到反垃圾邮件插件保护。要显示它需要在浏览器中启用 JavaScript。> * @author R.Arul Kumaran <该邮件地址已受到反垃圾邮件插件保护。要显示它需要在浏览器中启用 JavaScript。> * @copyright 2010 Luracast * @license http://www.gnu.org/licenses/ GNU General Public License * @link https://github.com/murraypicton/Doqumentor */class DocParser { private $params = array (); function parse($doc = '') { if ($doc == '') { return $this->params; } // Get the comment if (preg_match ( '#^/\*\*(.*)\*/#s', $doc, $comment ) === false) return $this->params; $comment = trim ( $comment [1] ); // Get all the lines and strip the * from the first character if (preg_match_all ( '#^\s*\*(.*)#m', $comment, $lines ) === false) return $this->params; $this->parseLines ( $lines [1] ); return $this->params; } private function parseLines($lines) { foreach ( $lines as $line ) { $parsedLine = $this->parseLine ( $line ); // Parse the line if ($parsedLine === false && ! isset ( $this->params ['description'] )) { if (isset ( $desc )) { // Store the first line in the short description $this->params ['description'] = implode ( PHP_EOL, $desc ); } $desc = array (); } elseif ($parsedLine !== false) { $desc [] = $parsedLine; // Store the line in the long description } } $desc = implode ( ' ', $desc ); if (! empty ( $desc )) $this->params ['long_description'] = $desc; } private function parseLine($line) { // trim the whitespace from the line $line = trim ( $line ); if (empty ( $line )) return false; // Empty line if (strpos ( $line, '@' ) === 0) { if (strpos ( $line, ' ' ) > 0) { // Get the parameter name $param = substr ( $line, 1, strpos ( $line, ' ' ) - 1 ); $value = substr ( $line, strlen ( $param ) + 2 ); // Get the value } else { $param = substr ( $line, 1 ); $value = ''; } // Parse the line and return false if the parameter is valid if ($this->setParam ( $param, $value )) return false; } return $line; } private function setParam($param, $value) { if ($param == 'param' || $param == 'return') $value = $this->formatParamOrReturn ( $value ); if ($param == 'class') list ( $param, $value ) = $this->formatClass ( $value ); if (empty ( $this->params [$param] )) { $this->params [$param] = $value; } else if ($param == 'param') { $arr = array ( $this->params [$param], $value ); $this->params [$param] = $arr; } else { $this->params [$param] = $value + $this->params [$param]; } return true; } private function formatClass($value) { $r = preg_split ( "[\(|\)]", $value ); if (is_array ( $r )) { $param = $r [0]; parse_str ( $r [1], $value ); foreach ( $value as $key => $val ) { $val = explode ( ',', $val ); if (count ( $val ) > 1) $value [$key] = $val; } } else { $param = 'Unknown'; } return array ( $param, $value ); } private function formatParamOrReturn($string) { $pos = strpos ( $string, ' ' ); $type = substr ( $string, 0, $pos ); return '(' . $type . ')' . substr ( $string, $pos + 1 ); }}
以上就是php怎么获取方法的注释的知识。速戳>>知识兔学习精品课！