How to install and configure redis in php: first download and install redis, and use the phpinfo function to check the version information of PHP; then copy [.dll and .pdb] to the ext directory of php; then modify [php. ini], and restart Apache; finally open the redis service for testing.
How to install and configure redis in php:
1. Download and install redis
1. First go to the github website to download
2. According to the actual situation, cp the 64bit content to a custom drive letter directory, such as D:\Redis;
3 .Open cmd, cd /d, switch to the Redis-server.exe directory, run redis-server.exe redis.conf;
4. At this time, open another cmd window. Do not close the original one, otherwise it will not work. Access the server.
Switch to the redis directory and run redis-cli.exe -h 127.0.0.1 -p 6379 (-a password remote);
5. Set the key-value pair set myKey abc
Get the key-value pair get myKey;
At this time, in the windows environment, both the redis server and the client run successfully.
2. PHP installation redis extension
1. Use the phpinfo() function to view the PHP version information, which will determine the extension file version.
2. Download php_igbinary-1.2.1-5.5-ts-vc11-x64.zip, php_redis-2.2.5-5.6-ts-vc11-x64.zip (be sure to ensure the correctness of the version)
3. After decompressing, copy php_redis.dll
and php_redis.pdb
to the ext directory of php
4. Modify php.ini , (PS: This php.ini file is in the Apache directory) Add to the file:
; php_redis extension=php_igbinary.dll extension=php_redis.dll
Note: extension=php_igbinary.dll
must be placed in extension=php_redis .dll
, otherwise this extension will not take effect
5. After restarting Apache, use phpinfo to check whether the extension is successfully installed
6. After opening the redis service, you can use the following test Whether it can be called.
<?php //连接本地的 Redis 服务 $redis = new Redis(); $redis->connect('127.0.0.1', 6379); echo "Connection to server sucessfully"; //设置 redis 字符串数据 $redis->set("tutorial-name", "Redis tutorial"); // 获取存储的数据并输出 echo "Stored string in redis:: " . $redis->get("tutorial-name"); ?>
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php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($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。

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。

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。

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。

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。


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