


This article brings you relevant knowledge about php. It mainly talks about how to find the path of the PHP configuration file php.ini. Friends who are interested can take a look below. I hope it will be helpful to everyone. .
How to find and obtain the path of the PHP configuration file php.ini
Purpose: View the current PHP opening Which extension modules are installed
Stupid method
Create a new directory, create an index.php file in it, and write the following code:
<?php echo phpinfo();
After saving , and then use PHP to open a temporary access web port:
php -S localhost:2233
Use a browser to access localhost:2233 to see the configuration.
Recommended method
php -m
This command can see the currently installed extension modules, it is fast and intuitive:
$ php -m [PHP Modules] bcmath bz2 calendar Core ctype curl date dba dom exif FFI ....
How to find the path to php.ini
You can use the stupid method above, View the php.ini file path directly on the page, but a stupid method is always a stupid method.
Recommended to use
php --ini
Effect:
$ php --ini Configuration File (php.ini) Path: /usr/local/etc/php/8.1 Loaded Configuration File: /usr/local/etc/php/8.1/php.ini Scan for additional .ini files in: /usr/local/etc/php/8.1/conf.d Additional .ini files parsed: /usr/local/etc/php/8.1/conf.d/ext-opcache.ini
In this way, you can know its path /usr/local/etc/php/8.1/php.ini
Recommended learning: "PHP Video Tutorial"
The above is the detailed content of Let's talk about how PHP newbies can find and obtain the php.ini path. For more information, please follow other related articles on the PHP Chinese website!

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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