


ThinkPHP framework construction and common problems (XAMPP installation failure, Apache/MySQL startup failure), thinkphpxampp
This article shares in detail the problems encountered when building the ThinkPHP framework, for Everyone has provided solutions, the details are as follows
Part One: Framework Construction
I am also new to ThinkPHP, so I will record my current experience and learning steps in a way that I think is easier to understand.
To use ThinkPHP, you must first set up the environment. The following two general steps will be introduced:
Step one: Download the software
1. Xmapp (this software integrates Apache, MySQL, etc. and is very convenient to use)
2. Download ThinkPHP3.2.3
Step 2: Build the framework
1. After installing xmapp, we can see a htdocs folder, and we can unzip the downloaded ThinkPHP3.2.3 into this folder;
2. Run XAMPP Control, open Apache and MySQL, as shown in the figure below
3. Open the browser, enter localhost and press Enter. Under normal circumstances, the following interface will appear
4. If the above interface appears, it means that the basic framework has been successfully built! , and we noticed that there is a dashboard behind the browser address bar. This is because we have not modified anything, so it displays the page under the dashboard by default.
Part 2: Frequently Asked Questions
First type: XAMPP installation failed
Method 1: You can restore all the previous operations, that is, uninstall XAMPP, restore or delete all the configuration files you should have, and then reinstall . I've done this before, and experiments show it works.
Method 2: Download and install vcredist_x86 in my network disk, and then install XAMPP. I think this is better, because otherwise there may be problems later. I’m not sure. I just explained my solution.
Second type: Apache startup failed
The first situation: Port 80 is occupied
Solution:
1. The simplest and crudest way: change the port number in the configuration file to something else. The method is as follows:
a. Open XAMPP, click the Config button corresponding to Apache, select the first line: Apache (httpd.config), and modify some configurations of the document;
b, Ctrl f, search for 80, find the locations as shown in the picture, change 80 to other ports, I changed it to 81, you need to enter netstat -an in the command line to check which ports of your computer are blocked occupied, or directly click the button Netstat in the upper right corner of XAMPP to view and select the unoccupied ports.
2. Check the port occupancy, find the process occupying port 80, open the task manager and kill the process. I may be a little inaccurate here, but the method is like this. I won’t go into specific measures because my modifications will involve other places.
Second case: Port 443 is occupied, because in addition to occupying port 80, the startup of Apache will also occupy port 443
Solution:
1. The first method is the method mentioned above, which is to kill the process occupying port 443;2. There is a simpler way, open the httpd-ssl.conf file in the xampp installation directory (C:xamppapacheconfextrahttpd-ssl.conf), I installed it on the C drive, or click Apache's Config in xampp button, select httpd-ssl.conf, find the sentence Listen 443, and change the 443 port to 4433 or other;
3. Open the XAMPP installation directory, modify the apacheconfhttpd.conf file, find the sentence Include "conf/extra/httpd-ssl.conf", and comment it out.
The third situation: the VC runtime library is missing, just download vcredist_x86 from my network disk and install it, as mentioned before.
Third type: MySQL failed to start
1. 3306 port problem, the solution is similar to the aboveFinally, if you find it useful, please give it a like and continue to follow the articles shared by the editor. Thank you!
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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。

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。

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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