composer报错：The requested PHP extension ext-bcmath * is missing from your system. Install or enable

阳光穿透心脏的1/2处 2022-11-27 10:12 235阅读 0赞

### 解决compose报错：The requested PHP extension ext-bcmath \* is missing from your system. Install or enable PHP's bcmath extension. ###

*   *  报错
     *  解决方案：安装php的bcmath扩展
     *   *  1. 首先查看自己php版本
         *  2. 安装对应版本的扩展
         *  3. 安装完成后，重启下php
         *  4. 查看php扩展是否安装成功

## 报错 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1b19xaWFuZ3FpYW5n_size_16_color_FFFFFF_t_70_pic_center]

$ composer require --prefer-dist yiisoft/yii2-mongodb                            
    Do not run Composer as root/super user! See https://getcomposer.org/root for details
    Using version ^2.1 for yiisoft/yii2-mongodb
    ./composer.json has been updated
    Loading composer repositories with package information
    Updating dependencies (including require-dev)
    Your requirements could not be resolved to an installable set of packages.
    
      Problem 1
        - The requested PHP extension ext-bcmath * is missing from your system. Install or enable PHP's bcmath extension. Problem 2 - The requested PHP extension ext-mcrypt * is missing from your system. Install or enable PHP's mcrypt extension.
    
    
    Installation failed, reverting ./composer.json to its original content.

## 解决方案：安装php的bcmath扩展 ##

### 1. 首先查看自己php版本 ###

php -v

### 2. 安装对应版本的扩展 ###

yum  -y install php72w-bcmath

注意：72w是代表7.2版本，安装的时候记得标明版本号

### 3. 安装完成后，重启下php ###

service php-fpm restart  或  systemctl restart php-fpm

### 4. 查看php扩展是否安装成功 ###

php -m

![在这里插入图片描述][2020081420394982.png_pic_center]

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[2020081420394982.png_pic_center]: /images/20221124/9e187023632b4e59a67cdcde784722e9.png