blocks|key|917996|text|很简单，在PHP安装中没有激活IMAP扩展。这不是默认启用。如果本地安装在Windows上运行XAMPP，则必须启用XAMPP常见问题中所述的XAMPP|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|917997|IMAP对PHP的支持在哪里？
默认情况下，在XAMPP中禁用了对PHP的IMAP支持，因为某些家庭版本(如Windows+98+)出现了一些神秘的初始化错误。Who与NT系统一起工作，可以通过删除行"\xampp\php\php.ini"中的起始分号来打开文件";extension=php_imap.dll"以激活php扩展。应该是：extension=php_imap.dll
现在重新启动Apache，IMAP应该可以工作。您可以对每个扩展使用相同的步骤，默认配置中没有启用这些步骤。|blockquote|style|CODE|917998|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/imap.installation|1|http://www.apachefriends.org/en/faq-xampp-windows.html#imapphp^0|P|4|0|1M|9|1|0|2S|K|3N|P|4P|M|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]|$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|F|7|Z|8|@$A|10|B|11|G|H]|$A|12|B|13|G|H]|$A|14|B|15|G|H]]|9|@]|C|$]]|$1|I|3|-4|5|6|7|16|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]|Q|$5|L|M|N|C|$O|R]]]]

Simple enough, the IMAP extension is not activated in your PHP installation. It is not <a href="http://php.net/imap.installation">enabled by default</a>. If your local installation is running XAMPP on Windows, you have to enable it as described in the <a href="http://www.apachefriends.org/en/faq-xampp-windows.html#imapphp">XAMPP FAQ</a>:

<blockquote>
 Where is the IMAP support for PHP?
 
 As default, the IMAP support for PHP is deactivated in XAMPP, because
 there were some mysterious initialization errors with some home
 versions like Windows 98. Who works with NT systems, can open the file
 <code>"\xampp\php\php.ini"</code> to active the php exstension by removing the
 beginning semicolon at the line <code>";extension=php_imap.dll"</code>. Should be:
 <code>extension=php_imap.dll</code>
 
 Now restart Apache and IMAP should work. You can use the same steps
 for every extension, which is not enabled in the default
 configuration.
</blockquote>

blocks|key|450297|text|如果您在linux上，编辑/etc/php/php.ini+(否则您必须在/etc/php5+5/cli/conf.d.d创建一个新的扩展名导入文件)，以便添加imap共享对象文件，然后重新启动apache服务器。不评论|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|450298|;extension=imap.so|code-block|syntax|javascript|450299|这样就变成了这样：|450300|extension=imap.so|450301|然后，通过|450302|#+/etc/rc.d/httpd+restart|450303|entityMap^0|D|G|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|10|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|S|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|T|$]]

if you are on linux, edit the <code>/etc/php/php.ini</code> (or you will have to create a new extension import file at /etc/php5/cli/conf.d) file so that you add the imap shared object file and then, restart the apache server. Uncomment

<pre><code>;extension=imap.so
</code></pre>

so that it becomes like this:

<pre><code>extension=imap.so
</code></pre>

Then, restart the apache by

<pre><code># /etc/rc.d/httpd restart
</code></pre>

blocks|key|438374|text|安装过程总是相同的，但是包管理器和包名称是不同的，这取决于您使用的发行版、版本和/或存储库。一般而言，这些步骤是：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|438375|(+a)首先，用户权限升级是必需的，可以通过命令su或sudo获得。
b)然后可以使用包管理器安装缺少的模块。
(+c)之后，需要重新启动apache2+HTTP守护进程才能加载模块。
(+d)最后，我们可以运行php+-m+%7C+grep+imap来查看该模块现在是否可用。|blockquote|CODE|438376|在Ubuntu上，APT包php5-imap+(或php-imap)可以安装apt-get|438377|apt-get+install+php5-imap
service+apache2+restart|code-block|syntax|javascript|438378|在Debian上，APT包php5-imap可以安装aptitude+(或apt-get)：|438379|aptitude+install+php5-imap
apache2ctl+graceful|438380|在CentOS和Fedora上，RPM包php-imap可以与yum一起安装(提示:当使用韦伯塔蒂+repo时，包的名称可能类似于php56w-imap或php71w-imap+)：|438381|yum+install+php-imap
service+httpd+restart|438382|在systemd系统上，在使用系统D单元时，重新启动单元httpd.service的命令是：|438383|systemctl+restart+httpd.service|438384|以上所述的解决方案存在这样的问题:当模块已经在以下文件中引用时：|438385|/etc/php5/apache2/php.ini|438386|它可能会抛出：|438387|PHP+Warning:++Module+'imap'+already+loaded+in+Unknown+on+line+0|438388|这是会发生的，因为它是在默认的php.ini文件中引用的(至少在Ubuntu12.04上是这样)，并且最多只能引用一次PHP模块。建议使用INI片段加载模块，同时扫描目录/etc/php5/conf.d/+(该路径也可能有所不同)以查找INI文件：|438389|/etc/php5/conf.d/imap.ini|438390|Ubuntu还提供了用于管理PHP模块的专用命令，在重新启动web服务器之前执行：|438391|php5enmod+imap
php5dismod+imap|438392|一旦将IMAP模块加载到服务器中，PHP函数就会变得可用；最佳实践可能是在尝试使用模块之前检查模块是否已加载。|438393|entityMap|0|LINK|mutability|MUTABLE|url|https://webtatic.com/projects/yum-repository/|1|https://www.freedesktop.org/software/systemd/man/systemd.unit.html|2|http://php.net/manual/en/ref.imap.php^0|0|4|0|2|1|Z|1|1M|1|2N|1|O|2|R|4|1X|7|2Y|I|0|1|6|9|3|D|9|P|8|12|7|0|0|1|6|9|3|D|9|Q|8|11|7|0|0|1|6|8|6|G|3|K|8|V|3|1T|B|25|B|19|4|0|0|0|1|7|S|D|F|5|1|0|0|0|0|0|0|F|7|1X|3|2D|H|3A|3|0|0|0|0|3|4|H|5|2|0^^$0|@$1|2|3|4|5|6|7|1W|8|@$9|1X|A|1Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|1Z|8|@$9|20|A|21|B|C]|$9|22|A|23|B|C]|$9|24|A|25|B|C]|$9|26|A|27|B|C]|$9|28|A|29|B|I]|$9|2A|A|2B|B|I]|$9|2C|A|2D|B|I]|$9|2E|A|2F|B|I]]|D|@]|E|$]]|$1|J|3|K|5|6|7|2G|8|@$9|2H|A|2I|B|C]|$9|2J|A|2K|B|I]|$9|2L|A|2M|B|I]|$9|2N|A|2O|B|I]|$9|2P|A|2Q|B|I]]|D|@]|E|$]]|$1|L|3|M|5|N|7|2R|8|@]|D|@]|E|$O|P]]|$1|Q|3|R|5|6|7|2S|8|@$9|2T|A|2U|B|C]|$9|2V|A|2W|B|I]|$9|2X|A|2Y|B|I]|$9|2Z|A|30|B|I]|$9|31|A|32|B|I]]|D|@]|E|$]]|$1|S|3|T|5|N|7|33|8|@]|D|@]|E|$O|P]]|$1|U|3|V|5|6|7|34|8|@$9|35|A|36|B|C]|$9|37|A|38|B|C]|$9|39|A|3A|B|I]|$9|3B|A|3C|B|I]|$9|3D|A|3E|B|I]|$9|3F|A|3G|B|I]|$9|3H|A|3I|B|I]]|D|@$9|3J|A|3K|1|3L]]|E|$]]|$1|W|3|X|5|N|7|3M|8|@]|D|@]|E|$O|P]]|$1|Y|3|Z|5|6|7|3N|8|@$9|3O|A|3P|B|I]|$9|3Q|A|3R|B|I]]|D|@$9|3S|A|3T|1|3U]]|E|$]]|$1|10|3|11|5|N|7|3V|8|@]|D|@]|E|$O|P]]|$1|12|3|13|5|6|7|3W|8|@]|D|@]|E|$]]|$1|14|3|15|5|N|7|3X|8|@]|D|@]|E|$O|P]]|$1|16|3|17|5|6|7|3Y|8|@]|D|@]|E|$]]|$1|18|3|19|5|N|7|3Z|8|@]|D|@]|E|$O|P]]|$1|1A|3|1B|5|6|7|40|8|@$9|41|A|42|B|I]|$9|43|A|44|B|I]|$9|45|A|46|B|I]|$9|47|A|48|B|I]]|D|@]|E|$]]|$1|1C|3|1D|5|N|7|49|8|@]|D|@]|E|$O|P]]|$1|1E|3|1F|5|6|7|4A|8|@]|D|@]|E|$]]|$1|1G|3|1H|5|N|7|4B|8|@]|D|@]|E|$O|P]]|$1|1I|3|1J|5|6|7|4C|8|@$9|4D|A|4E|B|I]]|D|@$9|4F|A|4G|1|4H]]|E|$]]|$1|1K|3|-4|5|6|7|4I|8|@]|D|@]|E|$]]]|1L|$1M|$5|1N|1O|1P|E|$1Q|1R]]|1S|$5|1N|1O|1P|E|$1Q|1T]]|1U|$5|1N|1O|1P|E|$1Q|1V]]]]

The Installation Procedure is always the same, but the package-manager and package-name varies, depending which distribution, version and/or repository one uses. In general, the steps are:

<blockquote>
 a) at first, user privilege escalation is required, either obtained with the commands <code>su</code> or <code>sudo</code>.
 
 b) then one can install the absent PHP module with a package manager.
 
 c) after that, restarting the <code>apache2</code> HTTP daemon is required to load the module.
 
 d) at last, one can run <code>php -m | grep imap</code> to see if the PHP module is now available.
</blockquote>

On Ubuntu the <code>APT</code> package <code>php5-imap</code> (or <code>php-imap</code>) can bei installed with <code>apt-get</code>:

<pre><code>apt-get install php5-imap
service apache2 restart
</code></pre>

On Debian, the <code>APT</code> package <code>php5-imap</code> can be installed <code>aptitude</code> (or <code>apt-get</code>):

<pre><code>aptitude install php5-imap
apache2ctl graceful
</code></pre>

On CentOS and Fedora the <code>RPM</code> package <code>php-imap</code> can be installed with <code>yum</code> (hint: the name of the package might be something alike <code>php56w-imap</code> or <code>php71w-imap</code>, when using <a href="https://webtatic.com/projects/yum-repository/" rel="noreferrer">Webtatic</a> repo):

<pre><code>yum install php-imap
service httpd restart
</code></pre>

On <code>systemd</code> systems, while using <a href="https://www.freedesktop.org/software/systemd/man/systemd.unit.html" rel="noreferrer">systemd units</a>, the command to restart unit <code>httpd.service</code> is:

<pre><code>systemctl restart httpd.service
</code></pre>

The solution stated above has the problem, that when the module was already referenced in:

<pre><code>/etc/php5/apache2/php.ini
</code></pre>

It might throw a:

<pre><code>PHP Warning: Module 'imap' already loaded in Unknown on line 0
</code></pre>

That happens, because it is referenced in the default <code>php.ini</code> file (at least on Ubuntu 12.04) and a PHP module must at most be referenced once. Using <code>INI</code> snippets to load modules is suggested, while the the directory <code>/etc/php5/conf.d/</code> (that path may also vary) is being scanned for <code>INI</code> files:

<pre><code>/etc/php5/conf.d/imap.ini
</code></pre>

Ubuntu also features proprietary commands to manage PHP modules, to be executed before restarting the web-server:

<pre><code>php5enmod imap
php5dismod imap
</code></pre>

Once the <code>IMAP</code> module is loaded into the server, the <a href="http://php.net/manual/en/ref.imap.php" rel="noreferrer">PHP IMAP Functions</a> should then become available; best practice may be, to check if a module is even loaded, before attempting to utilize it.

blocks|key|438424|text|如果它是安装了php5.3的centos的话。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|438425|sudo+yum+install+php53-imap|code-block|syntax|javascript|438426|重新启动apache|438427|sudo+/sbin/service+httpd+restart|438428|或|438429|sudo+service+apache2+restart|438430|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

if it is centos with php 5.3 installed.

<pre><code>sudo yum install php53-imap
</code></pre>

and restart apache 

<pre><code>sudo /sbin/service httpd restart
</code></pre>

or 

<pre><code>sudo service apache2 restart
</code></pre>

blocks|key|918118|text|使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|918119|echo+get_cfg_var('cfg_file_path');|code-block|syntax|javascript|918120|您可以找到这个php实例使用了哪个php.ini。|918121|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

With 

<pre><code>echo get_cfg_var('cfg_file_path');
</code></pre>

you can find out which php.ini has been used by this instance of php.

blocks|key|438481|text|Ubuntu中的用于安装imap使用|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|438482|sudo+apt-get+install+php-imap|code-block|syntax|javascript|438483|Ubuntu14.04及以上版本使用|438484|sudo+apt-get+install+php5-imap|438485|默认情况下，和imap未被PHP启用，因此使用此命令启用imap扩展。|438486|sudo+php5enmod+imap|438487|然后重新启动Apache。|438488|sudo+service+apache2+restart|438489|entityMap^0|8|A|0|0|0|I|0|0|6|S|0|0|2|A|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|H|7|19|8|@]|D|@]|E|$I|J]]|$1|S|3|T|5|6|7|1A|8|@$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|U|3|V|5|H|7|1D|8|@]|D|@]|E|$I|J]]|$1|W|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|X|$]]

In Ubuntu for install imap use

<pre><code>sudo apt-get install php-imap
</code></pre>

Ubuntu 14.04 and above use

<pre><code>sudo apt-get install php5-imap
</code></pre>

And imap by default not enabled by PHP so use this command to enable imap extension

<pre><code>sudo php5enmod imap
</code></pre>

Then restart your Apache

<pre><code>sudo service apache2 restart
</code></pre>

blocks|key|918191|text|在从Ubuntu12.04到14.04的迁移过程中，我也无意中发现了这一点，并希望分享到Ubuntu14.04LTS时，IMAP扩展似乎不再在默认情况下加载。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|918192|检查以验证是否安装了该扩展：|918193|dpkg+-l+%7C+grep+php5-imap|code-block|syntax|javascript|918194|应该这样回答：|918195|ii++php5-imap+++++++5.4.6-0ubuntu5+++amd64++++++++IMAP+module+for+php5|918196|如果没有，请安装它。|918197|实际启用扩展|918198|cd+/etc/php5/apache2/conf.d
ln+-s+../../mods-available/imap.ini+20-imap.ini
service+apache2+restart|918199|应该为apache修复它。对于CLI，在/etc/php5+5/cli/conf.d.d中也这样做。|918200|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|12|8|@]|9|@]|A|$]]|$1|Q|3|R|5|F|7|13|8|@]|9|@]|A|$G|H]]|$1|S|3|T|5|6|7|14|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

During migration from Ubuntu 12.04 to 14.04 I stumbled over this as well and wanted to share that as of Ubuntu 14.04 LTS the IMAP extension seems no longer to be loaded per default.

Check to verify if the extension is installed:

<pre><code>dpkg -l | grep php5-imap
</code></pre>

should give a response like this:

<pre><code>ii php5-imap 5.4.6-0ubuntu5 amd64 IMAP module for php5
</code></pre>

if not, install it.

To actually enable the extension

<pre><code>cd /etc/php5/apache2/conf.d
ln -s ../../mods-available/imap.ini 20-imap.ini
service apache2 restart
</code></pre>

should fix it for apache. For CLI do the same in /etc/php5/cli/conf.d

blocks|key|918231|text|很明显，在Mac上，由于提供的错误，PHP已经安装了，我们无法运行：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|918232|brew+instal+php+--with-imap+更新:最新版本的将不再工作！|blockquote|offset|length|style|BOLD|CODE|918233|$+brew+install+php72+--with-imap
Warning:+homebrew/php/php72+7.2.xxx+is+already+installed|code-block|syntax|javascript|918234|此外，只安装模块，这里不能工作：|918235|$+brew+install+php72-imap
Error:+No+available+formula+with+the+name+"php72-imap"|918236|因此，我们必须重新安装+it：|918237|$+brew+reinstall+php72+--with-imap|918238|它将需要一段时间:-)+(在8分17秒内建成)|918239|entityMap^0|0|0|R|S|E|0|R|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@$E|12|F|13|G|H]|$E|14|F|15|G|H]|$E|16|F|17|G|I]]|9|@]|A|$]]|$1|J|3|K|5|L|7|18|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|19|8|@]|9|@]|A|$]]|$1|Q|3|R|5|L|7|1A|8|@]|9|@]|A|$M|N]]|$1|S|3|T|5|6|7|1B|8|@]|9|@]|A|$]]|$1|U|3|V|5|L|7|1C|8|@]|9|@]|A|$M|N]]|$1|W|3|X|5|D|7|1D|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|Z|$]]

On Mac OS X with Homebrew, as obviously, PHP is already installed due to provided error we cannot run:

<blockquote>
 Update: Tha latest version <code>brew instal php --with-imap</code> will not work any more!!!
</blockquote>

<pre><code>$ brew install php72 --with-imap
Warning: homebrew/php/php72 7.2.xxx is already installed
</code></pre>

Also, installing module only, here will not work:

<pre><code>$ brew install php72-imap
Error: No available formula with the name "php72-imap"
</code></pre>

So, we must reinstall it:

<pre><code>$ brew reinstall php72 --with-imap
</code></pre>

<blockquote>
 It will take a while :-) (built in 8 minutes 17 seconds)
</blockquote>

blocks|key|450461|text|Ubuntu与Nginx和PHP+7一起使用以下内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|450462|sudo+apt-get+install+php-imap|450463|服务php7.0-fpm重新启动服务ngnix重新启动|450464|检查模块是否已安装了php+-m+\+grep|450465|模块imap的配置将在cli+php.ini和fpm+php.ini自动启用。|450466|nano+/etc/php/7.0/cli/conf.d.d/20-imap.ini纳米/etc/php/7.0/fpm/conf.d.d/20-imap.ini|450467|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Q|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|M|$]]

Ubuntu with Nginx and PHP-FPM 7 use this: 

sudo apt-get install php-imap

service php7.0-fpm restart
service ngnix restart

check the module have been installed
php -m | grep imap

Configuration for module imap will be enabled automatically, both at cli php.ini and at fpm php.ini

nano /etc/php/7.0/cli/conf.d/20-imap.ini
nano /etc/php/7.0/fpm/conf.d/20-imap.ini

blocks|key|918281|text|如果您的本地安装在Windows上运行XAMPP，这就足够了:您可以打开文件"\xampp\php\php.ini“，通过删除";extension=php_imap.dll”行中的起始分号来激活phpExst酰化。它应该是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|918282|;extension=php_imap.dll|code-block|syntax|javascript|918283|至|918284|extension=php_imap.dll|918285|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

If your local installation is running XAMPP on Windows , That's enough :
 you can open the file "\xampp\php\php.ini" to activate the php exstension by removing the beginning semicolon at the line ";extension=php_imap.dll". It should be:

<pre><code>;extension=php_imap.dll
</code></pre>

to

<pre><code>extension=php_imap.dll
</code></pre>

blocks|key|918319|text|在Ubuntu16.04上的PHP7.0.32上安装IMAP。转到给定的链接，并根据您的区域选择链接。在我的例子中，我从亚洲部分选择一个链接。然后将下载一个文件。只需单击文件安装IMAP+.Then重启apache即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|918320|https://packages.ubuntu.com/xenial/all/php-imap/download。|offset|length|918321|若要检查IMAP是否已安装，请检查成功安装的phpinfo+file.incase，将显示IMAP+c-客户端版本2007+f。|918322|entityMap|0|LINK|mutability|MUTABLE|url|https://packages.ubuntu.com/xenial/all/php-imap/download^0|0|0|1K|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

To install IMAP on PHP 7.0.32 on Ubuntu 16.04. Go to the given link and based on your area select link. In my case, I select a link from the Asia section. Then a file will be downloaded. just click on the file to install IMAP .Then restart apache

<a href="https://packages.ubuntu.com/xenial/all/php-imap/download" rel="nofollow noreferrer">https://packages.ubuntu.com/xenial/all/php-imap/download</a>.

to check if IMAP is installed check phpinfo file.incase of successful installation 
IMAP c-Client Version 2007f will be shown.

blocks|key|451094|text|为Xampp+7.3.9|type|unstyled|depth|inlineStyleRanges|entityRanges|data|451095|PHP.ini第913行：|offset|length|style|CODE|451096|;extension=imap|code-block|syntax|javascript|451097|你应该去掉分号。|451098|entityMap^0|0|0|7|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

For Xampp 7.3.9 

<code>PHP.ini</code> line 913:

<pre><code>;extension=imap
</code></pre>

You should remove the semicolon.

blocks|key|451105|text|我也有过同样的问题。在更改了php.ini文件中的分号后，我解决了我的问题。让我们看看你怎么解决这个问题？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|451106|首先，打开php.ini文件。xampp/php/php.ini|offset|length|style|BOLD|451107|搜索extension=imap|451108|在扩展名之前删除分号并保存此文件。|451109|删除分号;extension=imap前的代码|CODE|451110|删除分号extension=imap后的代码|451111|最后，打开XAMPP控制面板并重新启动Apache。|451112|entityMap^0|0|5|7|F|H|0|2|E|0|0|4|F|0|4|E|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@$D|W|E|X|F|G]|$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|10|8|@$D|11|E|12|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|13|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|14|8|@$D|15|E|16|F|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|17|8|@$D|18|E|19|F|N]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1A|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|T|$]]

I had the same issue. After changing a semicolon in the php.ini file I solved my problem. Let's see how can you solve it?

First, open php.ini file. xampp/php/php.ini

Search extension=imap

remove semicolon before extension and save this file.

Code before remove semicolon <code>;extension=imap</code>

Code after remove semicolon <code>extension=imap</code>

Finally, open the XAMPP Control panel and restart Apache.

I am trying to access my gmail account through my localhost. However, I am getting the response:

<blockquote>
 Fatal error: Call to undefined function imap_open()
</blockquote>

This is my code:

<pre><code>$hostname = '{imap.gmail.com:993/imap/ssl}INBOX';
$username = 'myid@gmail.com';
$password = 'mypassword';

/* try to connect */
$inbox = imap_open($hostname,$username,$password) or die('Cannot connect to Gmail: ' .imap_last_error());
</code></pre>

Fatal error: Call to undefined function imap_open() in PHP

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试通过我的本地主机访问我的gmail帐户。然而，我得到的答复是：致命错误:调用未定义函数imap_open()这是我的密码：$hostname = '{imap.gmail.com:993/imap/ssl}INBOX';$username = 'myid@gmail.com';$password = 'myp...

问致命错误:调用PHP中未定义的函数imap_open()
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