phpdoc：PHP警告：count（）：参数必须是实现Countable的数组或对象

Question

安装

$ wget http://www.phpdoc.org/phpDocumentor.phar
$ chmod +x phpdocumentor.phar

让我们尝试一堂课

$ cat src/Classe.php
<?php

/**
 * Classe.
 */
class Classe {}

$ ./phpdocumentor.phar -f src/Classe.php
Collecting files .. OK
Initializing parser .. OK
Parsing files
blablabla...

好吧。 但是现在让我们尝试一个功能

$ cat src/fun.php
<?php
/**
 * Summary fun.php
 */

/**
 * Function.
 */
function fun() {}

$ ./phpdocumentor.phar -f src/fun.php
Collecting files .. OK
Initializing parser .. OK
Parsing files
blablabla...
PHP Warning:  count(): Parameter must be an array or an object that implements Countable in phpDocumentor.phar/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1293
PHP Warning:  count(): Parameter must be an array or an object that implements Countable in phpDocumentor.phar/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1293
  Execute transformation using writer "twig"
PHP Warning:  count(): Parameter must be an array or an object that implements Countable in phpDocumentor.phar/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1293
PHP Warning:  count(): Parameter must be an array or an object that implements Countable in phpDocumentor.phar/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1293
  Execute transformation using writer "twig"
  Execute transformation using writer "twig"
  Execute transformation using writer "twig"
  Execute transformation using writer "twig"
PHP Warning:  count(): Parameter must be an array or an object that implements Countable in phpDocumentor.phar/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1293
PHP Warning:  count(): Parameter must be an array or an object that implements Countable in phpDocumentor.phar/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1293
blablabla...

现在有错误（警告）。 为什么？

我也尝试通过作曲家安装phpdoc

$ composer require --dev phpDocumentor/phpDocumentor
blablabla...
Package kherge/version is abandoned, you should avoid using it. No replacement was suggested.
Package herrera-io/json is abandoned, you should avoid using it. Use kherge/json instead.
Package herrera-io/phar-update is abandoned, you should avoid using it. No replacement was suggested.
Writing lock file
Generating autoload files

但是结果更糟

$ vendor/bin/phpdoc -f src/Classe.php 
PHP Fatal error:  Uncaught Doctrine\Common\Annotations\AnnotationException: [Semantical Error] The annotation "@JMS\Serializer\Annotation\Type" in property phpDocumentor\Configuration::$title does not exist, or could not be auto-loaded. in vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/AnnotationException.php:54
Stack trace:
#0 vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php(741): Doctrine\Common\Annotations\AnnotationException::semanticalError('The annotation ...')
#1 vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php(663): Doctrine\Common\Annotations\DocParser->Annotation()
#2 vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php(354): Doctrine\Common\Annotations\DocParser->Annotations()
#3 vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/AnnotationReader.php(254): Doctrine\Common\Annotations\Doc in vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/AnnotationException.php on line 54

在这一点上，我想知道，这个phpdoc是有效的工具吗？ 我是无法使用它的人吗？ 怎么了？

Answer 1

之所以发生这些错误，是因为您使用一个非数组参数或未实现Countable接口的参数调用count方法。 在PHP 7.2之前，如果您调用count(null) ，则将返回值0，并且不会发出警告，在PHP 7.2之后（包括），在调用带有无效参数的count时发出警告。 您可以在此处检查第一个参数必须是：

数组或可数对象。

这意味着phpdocumentor.phar某些代码与PHP 7.2+不完全兼容。 您可以尝试降级php版本或升级phpdocumentar （如果可能）。

Answer 2

++ composer require --dev phpdocumentor/phpdocumentor dev-master
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Generating autoload files

++ php -v
PHP 7.2.19-0ubuntu0.19.04.2 (cli) (built: Aug 13 2019 11:45:23) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.2.19-0ubuntu0.19.04.2, Copyright (c) 1999-2018, by Zend Technologies

++ cat src/Assembler.php
<?php
/**
 * File summary.
 */

namespace Xyz;

/**
 * @package Abc
 */
class Assembler {

    function assemble(?string $string) {

    }

}

++ php vendor/bin/phpdoc -f src/Assembler.php --template=responsive
Collecting files .. OK
Initializing parser .. OK
Parsing files
Parsing /mnt/shared-ntfs/Downloads/test-phpdoc/src/Assembler.php
Parse Error: Syntax error, unexpected '?', expecting T_VARIABLE on line 13  No summary was found for this file
Storing cache in "/mnt/shared-ntfs/Downloads/test-phpdoc/output/build" .. OK
Load cache                                                         ..    0.001s
Preparing template "responsive"                                    ..    0.006s
Preparing 13 transformations                                       ..    0.000s
Build "elements" index                                             ..    0.000s
Replace textual FQCNs with object aliases                          ..    0.000s
Resolve @link and @see tags in descriptions                        ..    0.000s
Enriches inline example tags with their sources                    ..    0.000s
Build "packages" index                                             ..    0.001s
Build "namespaces" index and add namespaces to "elements"          ..    0.000s
Collect all markers embedded in tags                               ..    0.000s
Transform analyzed project into artifacts                          .. 
Applying 13 transformations
  Initialize writer "phpDocumentor\Plugin\Core\Transformer\Writer\FileIo"
  Initialize writer "phpDocumentor\Plugin\Core\Transformer\Writer\Xml"
  Initialize writer "phpDocumentor\Plugin\Core\Transformer\Writer\Xsl"
  Initialize writer "phpDocumentor\Plugin\Graphs\Writer\Graph"
  Execute transformation using writer "FileIo"
  Execute transformation using writer "FileIo"
  Execute transformation using writer "FileIo"
  Execute transformation using writer "xml"
  Execute transformation using writer "xsl"
  Execute transformation using writer "xsl"
  Execute transformation using writer "xsl"
  Execute transformation using writer "xsl"
  Execute transformation using writer "xsl"
  Execute transformation using writer "xsl"
  Execute transformation using writer "xsl"
  Execute transformation using writer "xsl"
  Execute transformation using writer "Graph"
   0.133s
Analyze results and write report to log                            ..    0.000s

解析错误：语法错误，意外的'？'，期望T_VARIABLE在第13行上找不到此文件的摘要

php 7.2和phpdoc是否可能真的不同意？ 是否有任何与php 7.2兼容的phpdoc版本？