关于php：您的系统缺少扩展名GD-Laravel Composer更新


Extension gd is missing from your system - laravel composer Update

我通过Composer(composer require barryvdh/laravel-dompdf)在Laravel Project中新安装了Dompdf。 之后输入命令终端答复以下错误。

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Problem 1
    - dompdf/dompdf v0.7.0 requires ext-gd * -> the requested PHP extension gd is missing from your system.
    - barryvdh/laravel-dompdf v0.7.0 requires dompdf/dompdf ^0.7 -> satisfiable by dompdf/dompdf[v0.7.0].
    - Installation request for barryvdh/laravel-dompdf ^0.7.0 -> satisfiable by barryvdh/laravel-dompdf[v0.7.0].

  To enable extensions, verify that they are enabled in those .ini files:
    - /etc/php/5.6/cli/php.ini
    - /etc/php/5.6/cli/conf.d/10-opcache.ini
    - /etc/php/5.6/cli/conf.d/10-pdo.ini
    - /etc/php/5.6/cli/conf.d/15-xml.ini
    - /etc/php/5.6/cli/conf.d/20-calendar.ini
    - /etc/php/5.6/cli/conf.d/20-ctype.ini
    - /etc/php/5.6/cli/conf.d/20-dom.ini
    - /etc/php/5.6/cli/conf.d/20-exif.ini
    - /etc/php/5.6/cli/conf.d/20-fileinfo.ini
    - /etc/php/5.6/cli/conf.d/20-ftp.ini
    - /etc/php/5.6/cli/conf.d/20-gettext.ini
    - /etc/php/5.6/cli/conf.d/20-iconv.ini
    - /etc/php/5.6/cli/conf.d/20-json.ini
    - /etc/php/5.6/cli/conf.d/20-mbstring.ini
    - /etc/php/5.6/cli/conf.d/20-phar.ini
    - /etc/php/5.6/cli/conf.d/20-posix.ini
    - /etc/php/5.6/cli/conf.d/20-readline.ini
    - /etc/php/5.6/cli/conf.d/20-shmop.ini
    - /etc/php/5.6/cli/conf.d/20-simplexml.ini
    - /etc/php/5.6/cli/conf.d/20-sockets.ini
    - /etc/php/5.6/cli/conf.d/20-sysvmsg.ini
    - /etc/php/5.6/cli/conf.d/20-sysvsem.ini
    - /etc/php/5.6/cli/conf.d/20-sysvshm.ini
    - /etc/php/5.6/cli/conf.d/20-tokenizer.ini
    - /etc/php/5.6/cli/conf.d/20-wddx.ini
    - /etc/php/5.6/cli/conf.d/20-xmlreader.ini
    - /etc/php/5.6/cli/conf.d/20-xmlwriter.ini
    - /etc/php/5.6/cli/conf.d/20-xsl.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

如何解决这个错误

我已经使用以下注释安装了GD。 sudo apt-get install php5-gd以及Apache Server重新启动。 我的Laravel版本是5.3，Ubuntu版本是14.04

相关讨论

我已经安装了php7，我做了以下操作来解决完全相同的错误

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sudo apt-get install php7.0-gd
sudo apt-get install php7.0-intl
sudo apt-get install php7.0-xsl
相关讨论

如果您使用的是PHP版本5. *，则必须安装

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sudo apt-get install php5-gd

如果您使用的是PHP版本7. *，则必须安装

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sudo apt-get install php7.0-gd

希望它能起作用...

如果您使用的是PHP 7.2版，则必须安装

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sudo apt-get install php7.2-gd... it worked for me
相关讨论

打开您的php.ini并取消注释此行：

;extension=php_gd2.dll

可能没有为php-cli启用它，您可以像这样启用；

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sudo phpenmod gd

更新

我想，您使用的是ppa：ondrej php软件包(5.6)，这与默认的ubuntu 14.04 php软件包(5.5.9)混淆了。

要从ppa：ondrej安装php 5.6 gd库，您应该使用：

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sudo apt-get install php5.6-gd
相关讨论

如果您使用的是PHP版本7.2，则必须安装

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sudo apt-get install php7.2-gd

对于php 7.1

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sudo apt-get install php7.1-gd

干杯!

相关讨论

解决方案非常简单。

在您的php.ini中，只需取消注释extension=php_gd2.dll行(对于unix系统，请扩展名为.so)。

希望能帮助到你。

当我遇到这样的问题时，我总是会做：

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php -v
PHP 7.2.10-0ubuntu0.18.04.1 (cli) (built: Sep 13 2018 13:45:02) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.2.10-0ubuntu0.18.04.1, Copyright (c) 1999-2018, by Zend Technologies

然后搜索系统上安装的PHP版本。通常可以找到我缺少的扩展名。

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apt search php7.2
Sorting... Done
Full Text Search... Done
libapache2-mod-php7.2/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  server-side, HTML-embedded scripting language (Apache 2 module)

libphp7.2-embed/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  HTML-embedded scripting language (Embedded SAPI library)

php-all-dev/bionic,bionic 1:60ubuntu1 all
  package depending on all supported PHP development packages

php7.2/bionic-updates,bionic-updates,bionic-security,bionic-security 7.2.10-0ubuntu0.18.04.1 all
  server-side, HTML-embedded scripting language (metapackage)

php7.2-bcmath/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  Bcmath module for PHP

php7.2-bz2/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  bzip2 module for PHP

php7.2-cgi/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  server-side, HTML-embedded scripting language (CGI binary)

php7.2-cli/bionic-updates,bionic-security,now 7.2.10-0ubuntu0.18.04.1 amd64 [installed,automatic]
  command-line interpreter for the PHP scripting language

php7.2-common/bionic-updates,bionic-security,now 7.2.10-0ubuntu0.18.04.1 amd64 [installed,automatic]
  documentation, examples and common module for PHP

php7.2-curl/bionic-updates,bionic-security,now 7.2.10-0ubuntu0.18.04.1 amd64 [installed]
  CURL module for PHP

php7.2-dba/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  DBA module for PHP

php7.2-dev/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  Files for PHP7.2 module development

php7.2-enchant/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  Enchant module for PHP

php7.2-fpm/bionic-updates,bionic-security,now 7.2.10-0ubuntu0.18.04.1 amd64 [installed]
  server-side, HTML-embedded scripting language (FPM-CGI binary)

php7.2-gd/bionic-updates,bionic-security,now 7.2.10-0ubuntu0.18.04.1 amd64 [installed]
  GD module for PHP

php7.2-gmp/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  GMP module for PHP

php7.2-imap/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  IMAP module for PHP

php7.2-interbase/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  Interbase module for PHP

php7.2-intl/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  Internationalisation module for PHP

php7.2-json/bionic-updates,bionic-security,now 7.2.10-0ubuntu0.18.04.1 amd64 [installed,automatic]
  JSON module for PHP

php7.2-ldap/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  LDAP module for PHP

php7.2-mbstring/bionic-updates,bionic-security,now 7.2.10-0ubuntu0.18.04.1 amd64 [installed,automatic]
  MBSTRING module for PHP

php7.2-mysql/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  MySQL module for PHP

php7.2-odbc/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  ODBC module for PHP

php7.2-opcache/bionic-updates,bionic-security,now 7.2.10-0ubuntu0.18.04.1 amd64 [installed,automatic]
  Zend OpCache module for PHP

php7.2-pgsql/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  PostgreSQL module for PHP

php7.2-phpdbg/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  server-side, HTML-embedded scripting language (PHPDBG binary)

php7.2-pspell/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  pspell module for PHP

php7.2-readline/bionic-updates,bionic-security,now 7.2.10-0ubuntu0.18.04.1 amd64 [installed,automatic]
  readline module for PHP

php7.2-recode/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  recode module for PHP

php7.2-snmp/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  SNMP module for PHP

php7.2-soap/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  SOAP module for PHP

php7.2-sqlite3/bionic-updates,bionic-security,now 7.2.10-0ubuntu0.18.04.1 amd64 [installed]
  SQLite3 module for PHP

php7.2-sybase/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  Sybase module for PHP

php7.2-tidy/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  tidy module for PHP

php7.2-xml/bionic-updates,bionic-security,now 7.2.10-0ubuntu0.18.04.1 amd64 [installed]
  DOM, SimpleXML, WDDX, XML, and XSL module for PHP

php7.2-xmlrpc/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  XMLRPC-EPI module for PHP

php7.2-xsl/bionic-updates,bionic-updates,bionic-security,bionic-security 7.2.10-0ubuntu0.18.04.1 all
  XSL module for PHP (dummy)

php7.2-zip/bionic-updates,bionic-security 7.2.10-0ubuntu0.18.04.1 amd64
  Zip module for PHP

使用Manjaro(Arch)Linux：

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$ sudo pacman -S php-gd

在文件/ etc / php / php-ini中，添加以下行：

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extension=gd.so

在CentOS 7上，尝试运行以下命令：

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sudo yum install php72u-gd.x86_64