What should I do if there is no version of php-v after installing php7.2?

Solution to the problem that php-v has no version after installing php7.2: 1. Search for PHP-related directories or files in the system; 2. View the version information of php listed; 3. Delete all files in the bin directory PHP related directories; 4. Add the path to the correct PHP version to the environment variable.

The operating environment of this article: centos7 system, php7.2, Dell G3 computer.

What should I do if there is no version of php-v after installing php7.2?

Solve the problem that after CentOS7 installs php7.2, the version displayed by php -v is 5.4

1. Find the PHP-related directories or files in the system

find / -name php
/var/lib/php
/usr/bin/php
/usr/lib64/php
/usr/share/swig/2.0.10/php
/usr/share/php
/usr/include/php-zts/php
/usr/include/php
/usr/local/bin/php
/usr/local/include/php
/usr/local/lib/php
/usr/local/php
/selftemp/php-5.4.17/ext/pcntl/sapi/cli/php

2. Check the version information of php listed

/usr/local/bin/php -v
PHP 5.4.17 (cli) (built: Sep 21 2017 10:27:13) 
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies
/usr/bin/php -v
PHP 7.2.6 (cli) (built: Jun  2 2018 07:49:42) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.2.6, Copyright (c) 1999-2018, by Zend Technologies

3. Because the 5.4.17 version of php is under /usr/local/bin/, delete all PHP related files in the /usr/local/bin/ directory Directory or file

cd /usr/local/bin/
ls
courierauthconfig  c_rehash  parl     par.pl  peardev  phantomjs  phar.phar  php-cgi     phpize  scandeps.pl  zipdetails
crc32              openssl   parldyn  pear    pecl     phar       php        php-config  pp      tkpp
rm -rf ./php
rm -rf ./php-cgi
rm -rf ./php-config

4. Add the path to the correct PHP version to the environment variable

vim /etc/profile
文件末尾加上 export PATH="/usr/local/php/bin:$PATH"

5. Execute

source /etc/profile

6. If no error occurs, check the PHP version again If it is 7, it means success

php -v

PHP 7.2.6 (cli) (built: Jun  2 2018 07:49:42) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.2.6, Copyright (c) 1999-2018, by Zend Technologies

7. If the error is reported and there is no sokcet function, stream_socket_server() has been disabled for security...

Edit php.ini and set disable_functions=... Find stream_socket_server(), stream_socket_client, delete them, and restart the web component

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Other knowledge points that may be used:

Find the php.ini configuration file: find / - name php.ini

/etc/php.ini

Check which configuration file PHP loads. This gets the location of php.ini in the system. It is not the php.ini file loaded by the web apache

php -i | grep php.ini
Configuration File (php.ini) Path => /usr/local/lib

Recommended study: "PHP Video Tutorial"

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