1.下载xdebug文件

http://xdebug.org/wizard.php

将phpinfo()的源代码复制到文本框中，xdebug会提示如何配置和下载哪个版本的xdebug。

全部下载地址：

http://www.xdebug.org/download.php

phpize和./configure一定要使用你运行的php对应的phpize和php－config

参考：xdebug官网：https://xdebug.org/docs/faq#custom-phpize

Q: How do I find which phpize to use?

A: Run: "phpize --help". This shows you the full path to phpize. This path should be the same as where you have the CLI binary, "php-config" and the "pear" and "pecl" binaries installed. If you run "php-config --version" it should show the same version of PHP that you‘re running. If it doesn‘t match up, and perhaps the wrong "phpize" binary is found on the path, you can run configure as follows:

1. /full/path/to/php/bin/phpize
2. ./configure --with-php-config=/full/path/to/php/bin/php-config

mac下自带php，命令行下的phpize是/usr/bin/phpize，而xampp中php对应的phpize是/Applications/XAMPP/xamppfiles/bin/phpize，且./configure --with-php-config=/Applications/XAMPP/xamppfiles/bin/php-config

mac+phpstorm+xampp断点调试