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爱生活,爱LAMP 一段简单的curl代码 bandit 发表于 2015-01-05 03:41:37 在移动后端开发中经常遇到需要对接口进行调试,使用curl可以带来很大的便捷,记录下我常用的一段代码方便以后重用 [代码片段] …阅读全文 php 不同进制整数之间转换 bandit 发表于 201

爱生活,爱LAMP

  • 一段简单的curl代码

    bandit 发表于 2015-01-05 03:41:37

    在移动后端开发中经常遇到需要对接口进行调试,使用curl可以带来很大的便捷,记录下我常用的一段代码方便以后重用 [代码片段] …阅读全文

  • php 不同进制整数之间转换

    bandit 发表于 2015-01-04 11:42:13

    php整数共有四种表现形式: 二进制(binary system),(5.4.0以后才支持这种表达方式) 八进制(octal system), 十进制(decimal system), 十六进制(hexadecimal system). 官方也对应的提供了一系列的相互转换的函数,大部分记忆起来很简单(对应进制的单词对应前三个首字母拼接起来) 二进制 转八进制binoc …阅读全文

  • php 通过二进制数来存取开关数据

    bandit 发表于 2015-01-04 10:22:12

    PHP php

    通过二进制来保存开关数据可以节省不少空间,尤其在保存大量数据的时候很有价值。总的来说有三种操作需要实现,如下: [代码片段] …阅读全文

  • php 魔术方法应用场景简介

    bandit 发表于 2014-12-17 12:32:48

    PHP php

    [表格] …阅读全文

  • [转载]PHP中的 抽象类(abstract class)和 接口(interface)

    bandit 发表于 2014-12-14 10:29:29

    1.抽象类是指在 class 前加了 abstract 关键字且存在抽象方法(在类方法 function 关键字前加了 abstract 关键字)的类。 2.抽象类不能被直接实例化。抽象类中只定义(或部分实现)子类需要的方法。子类可以通过继承抽象类并通过实现抽象类中的所有抽象方法,使抽象类具体化。 3.如果子类需要实例化,前提是它实现了抽象类中的所有抽象方法。如果子类没有全部实现抽象类中的所有抽象 …阅读全文

  • php回调函数

    bandit 发表于 2014-12-14 10:21:54

    php很多函数都支持回调函数例如:array_udiff,array_usort…回调函数函数需要传入一个callback类型当作他的参数,官方文档里面明确指出了6种支持的回调函数参数传入方式。 1.普通的全局方法 2.对象的方法,传入数组当作参数 3.静态方法调用,传入数组当作参数 4.静态方法调用,传入字符串当作参数 5.父类的普通方法 6.闭包或者说匿名方法 [代码片段] 这些都 …阅读全文

  • http请求失败有哪些原因

    bandit 发表于 2014-12-13 04:01:25

    今天被问到这个问题,被问当时毫无头绪,只非常抽象的回答了一些可能的网络问题。感觉当时的回答非常不好,下班之后就继续思考这个问题的答案。思考的问题的过程中突然想到最近才了解到的jquery.deferred,jquery.deferred对ajax请求的结果主要会进行两种情况的处理,done和fail.想到这里,突然脑海中灵光一闪:原来这个问题考的是http状态码。到了这一步,标题中的答案突然明朗了 …阅读全文

  • ERROR 1062 (23000): Duplicate entry ‘1’ for key ‘P

    bandit 发表于 2014-12-09 09:22:45

    本着“暂时无法解决的问题都是好问题”的原则记下这个问题,给以后的闲暇留下一些思考的粮食。 问题描述: 1.在一个插入过记录,有primary key的innodb表里面清空数据(或者删除并重建表)然后重新插入数据的时候总是会提示标题所示的信息。2.重新建表的时候show create table 不会显示AUTO_INCREMENT=xx,但是向里面执行插入操作就会报错,这时候再show crea …阅读全文

  • [转载]memcache配置项详解

    bandit 发表于 2014-12-05 11:02:57

    memcache简介 memcache模块是一个高效的守护进程,提供用于内存缓存的过程式程序和面向对象的方便的接口,特别是对于设计动态web程序时减少对数据库的访问。 memcache也提供用于通信对话(session_handler)的处理。 更多Memcache 模块相关信息可以到 查阅。 memcache在php.ini中的配置 …阅读全文

  • MySQL创建索引、重建索引、查询索引、删除索引

    bandit 发表于 2014-12-05 10:52:49

    1、创建索引 索引的创建可以在CREATE TABLE语句中进行,也可以单独用CREATE INDEX或ALTER TABLE来给表增加索引。以下命令语句分别展示了如何创建主键索引(PRIMARY KEY),联合索引(UNIQUE)和普通索引(INDEX)的方法。 mysql>ALTER TABLE `table_name` ADD INDEX|UNIQUE|PRIMARY KEY| `index …阅读全文

  • [转载]Mysql导出表结构及表数据 mysqldump用法

    bandit 发表于 2014-12-04 12:24:21

    命令行下具体用法如下: mysqldump -u用戶名 -p密码 -d 數據库名 表名 脚本名; 1、导出數據库為dbname的表结构(其中用戶名為root,密码為dbpasswd,生成的脚本名為db.sql) mysqldump -uroot -pdbpasswd -d dbname >db.sql; 2、导出數據库為dbname某张表(test)结构 mysqldump -uroot -pd …阅读全文

  • realpath自动清除路径中的点号

    bandit 发表于 2014-12-03 08:51:23

    realpath自动清除路径中的点号,但仅限与点号出现在目录名和目录符号中间的情况。 [代码片段] …阅读全文

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