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[PHP]对Json字符串解码返回NULL的一般解决方案
php对json字符串解码使用json_decode()函数,第一个参数传字符串,第二个参数若为true,返回array;若为false,返回object。如果返回NULL,说明报错,输出json_last_error(),得到的整数值对应错误提示。如图:json_last_error()比较常见的...
分类:Web程序   时间:2014-09-25 17:51:47    阅读次数:175
LeetCode:Decode Ways
题目链接A message containing letters fromA-Zis being encoded to numbers using the following mapping:'A' -> 1'B' -> 2...'Z' -> 26Given an encoded message c...
分类:其他好文   时间:2014-09-25 01:02:47    阅读次数:240
php自定义json_encode()和json_decode()函数
json数据大家应该遇到过,json_encode()和json_decode()是php5.0以后加上的内置函数,如果低版本要使用,需加扩展,很多时候我们无权改变服务器的配置,我们只能通过自定义函数来实现这两个函数,其实所有的系统内置函数,基本上我们都是可以自己来定义的。if (!function...
分类:Web程序   时间:2014-09-24 20:57:07    阅读次数:264
LeetCode Climbing Stairs
You are climbing a stair case. It takesnsteps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb...
分类:其他好文   时间:2014-09-23 00:38:33    阅读次数:275
HDU----(2157)How many ways??(快速矩阵幂)
How many ways??Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1562Accepted Submission(s): 546Prob...
分类:其他好文   时间:2014-09-22 17:55:52    阅读次数:161
HDU - 5023 A Corrupt Mayor's Performance Art(区间修改)
Problem Description Corrupt governors always find ways to get dirty money. Paint something, then sell the worthless painting at a high price to someone who wants to bribe him/her on an auction, this ...
分类:其他好文   时间:2014-09-20 22:56:29    阅读次数:258
HDU 5023 A Corrupt Mayor's Performance Art (线段树)
Problem Description Corrupt governors always find ways to get dirty money. Paint something, then sell the worthless painting at a high price to someone who wants to bribe him/her on an auction, this ...
分类:其他好文   时间:2014-09-20 20:23:09    阅读次数:289
poj2663 矩阵快速幂
Tri TilingTime Limit:1000MSMemory Limit:65536KTotal Submissions:7841Accepted:4113DescriptionIn how many ways can you tile a 3xn rectangle with 2x1 dom...
分类:其他好文   时间:2014-09-19 20:54:15    阅读次数:187
oralce sql 创建指定时间段内的日历信息
创建 开始时间是2010 截止时间是2100的日历表数据。 create table temp_calendar as select    min(to_char(day, 'yyyymm')) month,    to_char(min(decode(weekday, 1, day)) ,'dd') w_7,    to_char(min(decode(weekday, ...
分类:数据库   时间:2014-09-19 17:41:35    阅读次数:245
二维码_encode与decode
二维码encode和decode工具类 import java.awt.Color; import java.awt.Graphics2D; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.io.InputStream;...
分类:其他好文   时间:2014-09-19 12:02:45    阅读次数:226
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