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PHP 字符串处理：去除 JSON 中多余的逗号

作者: Chuwen
时间: 2024-10-11
分类: PHP
评论

使用 docker inspect 和 jq 命令快速查看容器挂载目录、docker-compose.yaml 路径

作者: Chuwen
时间: 2024-07-31
分类: 神奇技巧
评论

关于 `jq` 命令的详细解释及安装教程：https://wangchujiang.com/linux-command/c/jq.html

---

语法：
```shell
docker inspect <container ID> | jq '.[0].Mounts'
```

例如：
```shell
shine@Shine-Win11:~/documents/self-projects/tmp$ docker inspect aa3f359ddc0e | jq '.[0].Mounts'
[
  {
    "Type": "bind",
    "Source": "/home/shine/documents/git/projects/docker-elk/elasticsearch/config/elasticsearch.yml",
    "Destination": "/usr/share/elasticsearch/config/elasticsearch.yml",
    "Mode": "ro,Z",
    "RW": false,
    "Propagation": "rprivate"
  },
  {
    "Type": "volume",
    "Name": "docker-elk_elasticsearch",
    "Source": "/var/lib/docker/volumes/docker-elk_elasticsearch/_data",
    "Destination": "/usr/share/elasticsearch/data",
    "Driver": "local",
    "Mode": "z",
    "RW": true,
    "Propagation": ""
  }
]
```
![](https://cdn.nowtime.cc/2024/07/31/3809813538.png)

## 查看 docker-compose.yaml 路径

语法：
```shell
docker inspect <container ID> | jq '.[0].Config.Labels'
```

示例：
```shell
shine@Shine-Win11:~/documents/git/projects/docker-elk$ docker inspect 8334b593b89a | jq '.[0].Config.Labels'
{
  "com.docker.compose.config-hash": "d1f80fc712ff55f9f33eafc4842bf71f947a6584b27eb548bca0c0dc399bff8b",
  "com.docker.compose.container-number": "1",
  "com.docker.compose.depends_on": "",
  "com.docker.compose.image": "sha256:de7d209b219972d54381f0a7d18671d0c3aa1f3b4410a607cb82d34a08a97dc8",
  "com.docker.compose.oneoff": "False",
  "com.docker.compose.project": "frankenphp-typecho",
  "com.docker.compose.project.config_files": "/mnt/c/Users/Shine/Documents/Self/projects/frankenphp-typecho/docker-compose.yaml",
  "com.docker.compose.project.working_dir": "/mnt/c/Users/Shine/Documents/Self/projects/frankenphp-typecho",
  "com.docker.compose.replace": "3a7bd46c1737dd0ce32be2e6f4b246ca3e2778bbc83d105579c994e8fadc3a17",
  "com.docker.compose.service": "wordpress",
  "com.docker.compose.version": "2.24.7",
  "org.opencontainers.image.created": "2024-04-23T12:51:06Z",
  "org.opencontainers.image.description": "The modern PHP app server",
  "org.opencontainers.image.licenses": "MIT",
  "org.opencontainers.image.revision": "a9ebc3aeea590b45422a19510473955b372d09aa",
  "org.opencontainers.image.source": "https://github.com/dunglas/frankenphp",
  "org.opencontainers.image.title": "FrankenPHP",
  "org.opencontainers.image.url": "https://frankenphp.dev",
  "org.opencontainers.image.vendor": "Kévin Dunglas",
  "org.opencontainers.image.version": "v1.1.3"
}
```

![](https://cdn.nowtime.cc/2024/07/31/1733369616.png)

Windows Navicat Premium 16 直链下载（非 www.navicat.com.cn 网站）

作者: Chuwen
时间: 2024-07-30
分类: 软件
评论

composer 永久忽略安装包时提示依赖 xx 扩展

作者: Chuwen
时间: 2024-07-02
分类: PHP
评论

## 问题

在本地开发时，如果使用 composer 安装 composer 包经常会遇到这种提示：
```
Your requirements could not be resolved to an installable set of packages.

Problem 1
    - Root composer.json requires php ^8.3 but your php version (8.2.9) does not satisfy that requirement.
  Problem 2
    - Root composer.json requires PHP extension ext-posix * but it is missing from your system. Install or enable PHP's posix extension.
  Problem 3
    - Root composer.json requires PHP extension ext-rdkafka * but it is missing from your system. Install or enable PHP's rdkafka extension.
  Problem 4
    - hhxsv5/laravel-s is locked to version v3.8.0 and an update of this package was not requested.
    - hhxsv5/laravel-s v3.8.0 requires ext-pcntl * -> it is missing from your system. Install or enable PHP's pcntl extension.
  Problem 5
    - laravel/horizon is locked to version v5.24.4 and an update of this package was not requested.
    - laravel/horizon v5.24.4 requires ext-pcntl * -> it is missing from your system. Install or enable PHP's pcntl extension.
  Problem 6
    - laravel/pail is locked to version v1.1.3 and an update of this package was not requested.
    - laravel/pail v1.1.3 requires ext-pcntl * -> it is missing from your system. Install or enable PHP's pcntl extension.

To enable extensions, verify that they are enabled in your .ini files:
    - C:\Users\Shine\.pvm\versions\php-8.2\php.ini
You can also run `php --ini` in a terminal to see which files are used by PHP in CLI mode.
Alternatively, you can run Composer with `--ignore-platform-req=ext-posix --ignore-platform-req=ext-rdkafka --ignore-platform-req=ext-pcntl` to temporarily ignore these required extensions.
You can also try re-running composer require with an explicit version constraint, e.g. "composer require dcat/laravel-admin:*" to figure out if any version is installable, or "composer require dcat/laravel-admin:^2.1" if you know which you need.

Installation failed, reverting ./composer.json and ./composer.lock to their original content.
```

![](https://cdn.nowtime.cc/2024/07/02/2434538828.png)

实际上在本机开发过程中通常不需要用到这些依赖扩展，或者你是 Windows 作为开发环境，那么像 `posix`, `pcntl` 扩展在 Windows 上是安装不上的，所以我都会加上 `--ignore-platform-reqs` 选项，来跳过对这些扩展的检查，但是每次装 composer 包都要手打这个选项实在是太过繁琐，有没有直接替我加上这个选项的方法？

## 过程

通过查阅[Composer 官方文档](https://getcomposer.org/doc/03-cli.md#composer-ignore-platform-req-or-composer-ignore-platform-reqs "Composer 官方文档")，确实有这么一个方法，设置一个环境变量 `COMPOSER_IGNORE_PLATFORM_REQS=1` 即可解决

## 结果

Windows 添加环境变量

1. 按下 `Win` + `R` 输入 `sysdm.cpl` 然后按 `Enter`
2. 选择“环境变量”
3. 新建环境变量
4. 输入变量名 `COMPOSER_IGNORE_PLATFORM_REQS`
5. 输入变量值 `1`
6. 确定 -> 确定 -> 确定
7. 完成

![](https://cdn.nowtime.cc/2024/07/02/3423099981.png)

记一次使用 Laravel Http Client 使用不当导致内存泄漏的问题

作者: Chuwen
时间: 2023-12-06
分类: PHP
评论

## 背景

Laravel 的[ HTTP Client](https://laravel.com/docs/10.x/http-client " HTTP Client") 基于 Guzzle 二次封装，操作很方便,所以在业务代码上我就这么写了类似的代码

```php

$url = 'https://xxxx/xxx.json';

$json = Illuminate\Support\Facades\Http::get($url)->json();

// TODO 业务逻辑处理

```

项目使用了 [laravels](https://github.com/hhxsv5/laravel-s "laravels")，所以项目是常驻内存的，但是经过观察发 worker 内存会随着请求数量慢慢增加，并且不会自动回收内存，导致最终内存不足程序异常终止：

```
PHP Fatal error:  Allowed memory size of 67108864 bytes exhausted (tried to allocate 360448 bytes) in /Users/shine/work/xxxxxx-project/vendor/guzzlehttp/psr7/src/Utils.php on line 414

Symfony\Component\ErrorHandler\Error\FatalError

Allowed memory size of 67108864 bytes exhausted (tried to allocate 360448 bytes)

at vendor/guzzlehttp/psr7/src/Utils.php:414
    410▕         });
    411▕
    412▕         try {
    413▕             /** @var string|false $contents */
  ➜ 414▕             $contents = stream_get_contents($stream);
    415▕
    416▕             if ($contents === false) {
    417▕                 $ex = new \RuntimeException('Unable to read stream contents');
    418▕             }

Whoops\Exception\ErrorException

Allowed memory size of 67108864 bytes exhausted (tried to allocate 360448 bytes)

at vendor/guzzlehttp/psr7/src/Utils.php:414
    410▕         });
    411▕
    412▕         try {
    413▕             /** @var string|false $contents */
  ➜ 414▕             $contents = stream_get_contents($stream);
    415▕
    416▕             if ($contents === false) {
    417▕                 $ex = new \RuntimeException('Unable to read stream contents');
    418▕             }

+1 vendor frames
  2   [internal]:0
      Whoops\Run::handleShutdown()

```

## 解决方案

通过研究框架代码，发现是没有正常关闭 Guzzle stream，导致内存一直累积无法回收

然后又在在 [vendor/laravel/framework/src/Illuminate/Http/Client/Response.php:247](https://github.com/laravel/framework/blob/10.x/src/Illuminate/Http/Client/Response.php#L247 "vendor/laravel/framework/src/Illuminate/Http/Client/Response.php:247") 位置发现有一个 `close()` 方法，但这个方法没有在任何地方使用，应该是想让你手动调用进行关闭 stream

所以将代码改成如下就可以了

```php

$url = 'https://xxxx/xxx.json';

$response = Illuminate\Support\Facades\Http::get($url);
$json = $response->json();

// 关闭 stream
$response->close();

// TODO 业务逻辑处理

```

## 附测试内存泄漏代码

```php
<?php

$i = 0;
while (true) {
    $url = 'http://127.0.0.1:7788/composer.lock';

$json = Illuminate\Support\Facades\Http::get($url)->json();

printf("Count: %d\tPHP Memory: %.1fMB\n", $i++, memory_get_usage(true) / 1024.00 / 1024.00);
}

```

![](https://cdn.nowtime.cc/2023/12/06/138987942.png)

## 附测试修复内存泄漏后的代码

```php
<?php

$i = 0;
while (true) {
    $url = 'http://127.0.0.1:7788/composer.lock';

$response = Illuminate\Support\Facades\Http::get($url);

printf("Count: %d\tPHP Memory: %.1fMB\tResponse size: %.2fKB\n", $i++, memory_get_usage(true) / 1024.00 / 1024.00, strlen($response->body()) / 1024);

$response->close();
}

```

![](https://cdn.nowtime.cc/2023/12/06/3782614807.png)

PHP 字符串处理：去除 JSON 中多余的逗号

使用 docker inspect 和 jq 命令快速查看容器挂载目录、docker-compose.yaml 路径

Windows Navicat Premium 16 直链下载（非 www.navicat.com.cn 网站）

composer 永久忽略安装包时提示依赖 xx 扩展

记一次使用 Laravel Http Client 使用不当导致内存泄漏的问题

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