Installing and updating PHP 7

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Consult about backup and recovery procedures before doing any installation or upgrade to Pandora FMS.

For version 760 (and later) of Pandora FMS visit “Upgrading from PHP 7 to PHP 8”.

First, check that there is no previous PHP version installed in the machine, using the command:

php –v

Once verified that php has been uninstalled correctly, download the EPEL and Remi (repository with the latest versions of PHP 7):

 # yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
 # yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm

In order to use the yum-config-manager command you must have yum-utils installed, verify your installation with the following command:

 yum install yum-utils

For install PHP 7.2 version:

yum-config-manager --enable remi-php72

For install PHP 7.4 version:

yum-config-manager --enable remi-php74

Finally, install the selected PHP version:

yum install php php-mcrypt php-cli php-gd php-curl php-mysql php-ldap php-zip php-fileinfo php-snmp php-mbstring php-pecl-zip php-xmlrpc libxslt php-xml

And check the installed version:

Check PHP version installed in the machine:

php –v

Download the EPEL and Remi (repository with the latest versions of PHP 7):

 # yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
 # yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm

In order to use the yum-config-manager command you must have yum-utils installed, verify your installation with the following command:

 yum install yum-utils

For install PHP 7.2 version:

yum-config-manager --disable 'remi-php*'
yum-config-manager --enable remi-php72

For install PHP 7.4 version:

yum-config-manager --disable 'remi-php*'
yum-config-manager --enable remi-php74

Finally, install the selected PHP version:

yum install php php-mcrypt php-cli php-gd php-curl php-mysql php-ldap php-zip php-fileinfo php-snmp php-mbstring php-pecl-zip php-xmlrpc libxslt php-xml

And check the installed version:

PHP version by default is PHP 7.2, update to PHP 7.4 with:

dnf module reset php -y
dnf module enable php:7.4
dnf update -y

Check new version with php -v:

There is also the possibility that during the upgrade process to php7, the php.ini file is affected. Here is an example of some of the data that php.ini must include:

engine = On
precision = 14
output_buffering = 4096
serialize_precision = 1
zend.enable_gc = On
expose_php = On
max_execution_time = 0
max_input_time = -1
memory_limit = 800M
error_reporting = E_ALL & ~E_DEPRECATED & ~E_NOTICE & ~E_USER_WARNING
log_errors = On
log_errors_max_len = 1024
report_memleaks = On
html_errors = On
variables_order = "GPCS"
request_order = "GP"
auto_globals_jit = On
post_max_size = 800M
default_mimetype = "text/html"
default_charset = "UTF-8"
file_uploads = On
upload_max_filesize = 800M
max_file_uploads = 20
allow_url_fopen = On
allow_url_include = Off
default_socket_timeout = 60
cli_server.color = On
pcre.jit=0
pdo_mysql.cache_size = 2000
sendmail_path = /usr/sbin/sendmail -t -i
mail.add_x_header = On

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