PHP 7.x preg_replace替换了ereg_replace，D8主题崩坏

文章作者：姜南(Slyar) 文章来源：Slyar Home (www.slyar.com) 转载请注明，谢谢合作。

说什么好呢，一个付费主题bug这么多，作者也不修改。PHP升级到7.x版本以后主题就崩溃了，看了一眼error log真是鲜血淋漓

2017/11/01 04:46:39 [error] 14987#0: *38 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Uncaught Error: Call to undefined function ereg_replace() in /不给看/wp-content/themes/d8/header.php:69

ereg_replace: This function was DEPRECATED in PHP 5.3.0, and REMOVED in PHP 7.0.0. (传送门)

ereg_replace() 的问题，这个东西在PHP 7.x以后就不存在了。匹配语法也从ereg syntax (POSIX)改成了preg syntax (PCRE)。修复方法也很简单，把所有的ereg_replace()和对应的匹配表达式都换成preg_replace()标准就好了

[root@slyar-gcp d8]# grep -nr "ereg_replace(\"<div\[^>\]\*><ul\[^>\]\*>\"" ./
./pages/tags.php:11:            <?php echo str_replace("</ul></div>", "", ereg_replace("<div[^>]*><ul[^>]*>", "", wp_nav_menu(array('theme_location' => 'pagemenu', 'echo' => false)) )); ?>
./pages/readers.php:22:         <?php echo str_replace("</ul></div>", "", ereg_replace("<div[^>]*><ul[^>]*>", "", wp_nav_menu(array('theme_location' => 'pagemenu', 'echo' => false)) )); ?>
./pages/tougao.php:11:          <?php echo str_replace("</ul></div>", "", ereg_replace("<div[^>]*><ul[^>]*>", "", wp_nav_menu(array('theme_location' => 'pagemenu', 'echo' => false)) )); ?>
./pages/page.php:12:            <?php echo str_replace("</ul></div>", "", ereg_replace("<div[^>]*><ul[^>]*>", "", wp_nav_menu(array('theme_location' => 'pagemenu', 'echo' => false)) )); ?>
./pages/archives.php:11:            <?php echo str_replace("</ul></div>", "", ereg_replace("<div[^>]*><ul[^>]*>", "", wp_nav_menu(array('theme_location' => 'pagemenu', 'echo' => false)) )); ?>
./pages/links.php:11:           <?php echo str_replace("</ul></div>", "", ereg_replace("<div[^>]*><ul[^>]*>", "", wp_nav_menu(array('theme_location' => 'pagemenu', 'echo' => false)) )); ?>
./header.php:69:            <?php echo str_replace("</ul></div>", "", ereg_replace("<div[^>]*><ul[^>]*>", "", wp_nav_menu(array('theme_location' => 'nav', 'echo' => false)) )); ?>

作者我真是。。。服了你了，你写个函数重复用会死么！会！死！么！

请把所有的

ereg_replace("<div[^>]*><ul[^>]*>"

都替换成

preg_replace("/<div[^>]*><ul[^>]*>/"

就好了。。。

(sed表达式太复杂我就不写了，只有7、8个手工改了就行了，要是有几十个那得是脚本改，醉了…)

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