Comparison of domestic PHP original forum ofstar ctb wdb discuz fastboard ----- personal summary
Since the travel fastboard is encrypted, I will not make a comparison - of course it is a good program
The following comparison is purely from a technical point of view Let’s start without considering personal expertise. After all, personal expertise varies from person to person!
The following main comparisons: speed, stability, security, load capacity, backend, frontend functions
Comparison of ofstar and ctb
1. In terms of speed, ofstar is much faster than ctb
2. In terms of stability, ctb still adopts the traditional stability concept, which is unstable in a sense!
3. In terms of safety, ctb There are no security issues caused by filtering malicious codes!
4. In terms of load capacity, when a large amount of data exists, the load caused by CTB management, search, threads, and post browsing is relatively large! ofstar adopts a unique The reading and writing algorithm breaks through the load problem of text databases for the first time!
5. Both ctb and ofstar have their own strengths in the background, but in terms of backup, ctb backup is more troublesome
6. The front-end function of ctb is not as good as ofstar!
7, ctb started early, there are more ctb plug-ins, and there are more ready-made styles!
Comparison of ofstar and wdb
All existing wdb (original or hack version) exist Extremely serious security vulnerability, you can easily get the administrator password! Therefore, I won’t make a detailed comparison, let’s keep it simple: stability, security, load capacity, background, and template system are not as good as ofstar, and the speed of other people’s modified versions in the later period is far slower. ofstar
Comparison of ofstar and discuz
ofstar uses a flat file database, discuz uses a mysql database
1, in terms of speed, ofstar is much faster than discuz
2, in terms of stability, due to the use of Comparing different databases, the coverage range is larger, but ofstar’s unique text stability algorithm is better, and it has also been successfully tested in large forums!
3. In terms of security, due to the use of different databases , Comparability is reduced, ofstar is better than discuz free version in terms of code
4. Due to the different physical structure of the database, in terms of load capacity and background management, because ofstar adopts a unique algorithm, the two are comparable!
5. In terms of front-end functions, ofstar does a better job in preventing theft of pictures and attachments. The back-end function discuz user group function is better than that of ofstar, and the others are comparable!
6. discuz developed early and has more plug-ins
(source :pocky)

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。


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