mac1011 php error Use of undefined constant MCRYPT_RIJNDAEL_128

The reason for the error is that the mcrypt extension of php is not installed, but the constants of the encryption methods defined in the extension are used. Solution: Install the mcrypt extension

Specific steps:

1. Open the command line to install mcrypt: brew install mcrypt

        2. Install the php-mcrypt extension: brew install php55-mcrypt (install your own version of php)

                                                                                                                                                                                                                           . Check if the extension is installed

php -m | grep mcrypt

php -i | grep mcrypt

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<img src="http://image.codes51.com/Article/image/20160129/20160129115805_1368.png" alt="mac1011 php报错 Use of undefined constant MCRYPT_RIJNDAEL_128">​ 4. Copy the mcrypt configuration to the directory of the php scan configuration I The default-Will-config-free-scan-dir =/library/server/web/config/php 'can be found in the configure commit options in PHPINFO.

                                                                                                                                                                  . ext-mcrypt.ini

or

sudo ln -s /usr/local/etc/php/5.5/conf.d/ext-mcrypt.ini /Library/Server/Web/Config/php/ext-mcrypt. ini

Finally:

You can also use another method to install:

http://jingyan.baidu.com/article/e3c78d644cf1ed3c4c85f5a8.html

The above introduces the mac1011 php error Use of undefined constant MCRYPT_RIJNDAEL_128, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials. <br>