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When to Redis? When to MongoDB? [closed]
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Redis. Let’s say you’ve written a site in php; for whatever reason, it becomes popular and it’s ahead of its time or has porno on it. You realize this php is so freaking slow, "I’m gonna lose my fans because they simply won’t wait 10 seconds for a page." You ha...
How to convert all tables from MyISAM into InnoDB?
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<?php
// connect your database here first
//
// Actual code starts here
$sql = "SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = 'your_database_name'
AND ENGINE = 'MyIS...
Collections.emptyMap() vs new HashMap()
...ameters, it's certainly a bit wasteful to create a HashMap, which involves allocating an array, when you could just pass in the 'Empty Map' which is effectively a constant, the way it's implemented in java.util.Collections.
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Ruby on Rails: Where to define global constants?
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@Zabba If the allocation of a single array makes a noticable difference for your app, you probably shouldn't be using Ruby in the first place... That said, using a method and returning a completely new array each time can have a couple of ...
How to delete an array element based on key? [duplicate]
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PHP
unset($array[1]);
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XunSearch（讯搜）的使用教程步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...款很不错的中文全文检索工具使用xunsearch快速构建自己的PHP全文搜索引擎。需要注意的是XunSearch只能在Linux和Unix下运行。 XunSearch(官网)是一款很不错的中文全文检索工具使用xunsearch快速构建自己的PHP全文搜索引擎。
需要注意...
MongoDB sort排序、index索引教程 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...据如下：
{ "_id" : ObjectId("56066542ade2f21f36b0313a"), "title" : "PHP 教程", "description" : "PHP 是一种创建动态交互性站点的强有力的服务器端脚本语言。", "by" : "菜鸟教程", "url" : "https://www.tsingfun.com", "tags" : [ "php" ], "likes" : 200 }
{ "_id" : Obje...
Discuz 找回密码时提示参数错误 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... 找回密码时提示参数错误source module member member_getpasswd.php第32行找到$uid = $_GET['uid'];在下方添加一行$sign = $_GET['sign'];tem...source\module\member\member_getpasswd.php
第32行找到
$uid = $_GET['uid'];
在下方添加一行
$sign = $_GET['sign'];
templat...
-bash: phpize: command not found - 更多技术 - 清泛网 - 专注C/C++及内核技术
-bash: phpize: command not foundphpize是属于php-devel的内容，因此在centos中只要运行如下命令：yum install php-develphpize是属于php-devel的内容，因此在centos中只要运行如下命令：
yum install php-devel
phpize
优惠券批量生成及导入的思路 - 闲聊区 - 清泛IT论坛，有思想、有深度
...产生2个36进制随机数拼接起来，取前面的部分即可。一段PHP代码如下：<?php
function gen_coupon() {
do {
$m = mt_rand(0, PHP_INT_MAX);
$n = mt_rand(0, PHP_INT_MAX);
&nbs...