Installation

Installation - 图1

Requirements

PHP 7.2

Phalcon v4 supports only PHP 7.2 and above. PHP 7.1 has been released 2 years ago and its active support has lapsed, so we decided to follow actively supported PHP versions.

PSR

Phalcon requires the PSR extension. The extension can be downloaded and compiled from this GitHub repository. Installation instructions are available on the README of the repository. Once the extension has been compiled and is available in your system, you will need to load it to your php.ini. You will need to add this line:

  1. extension=psr.so

before

  1. extension=phalcon.so

Alternatively some distributions add a number prefix on ini files. If that is the case, choose a high number for Phalcon (e.g. 50-phalcon.ini).

PDO

Since Phalcon is loosely coupled, it exposes functionality without the need for additional extensions. However certain components rely on additional extensions to work. When in need for database connectivity and access, you will need to install the php_pdo extension. If your RDBMS is MySQL/MariaDB or Aurora, you will need the php_mysqlnd extension also. Similarly, using a PostgreSql database with Phalcon requires the php_pgsql extension.

Hardware

Phalcon is designed to use as little resources as possible, while offering high performance. Although we have tested Phalcon in various low end environments, (such as 0.25GB RAM, 0.5 CPU), the hardware that you will choose will depend on the your application needs.

We have hosted our website and blog for the last few years on an Amazon VM with 512MB RAM and 1 vCPU.

Software

You should always try and use the latest version of Phalcon and PHP as both address bugs, security enhancements as well as performance.

Along with PHP 7.2 or greater, depending on your application needs and the Phalcon components you need, you might need to install the following extensions:

Installing these packages will vary based on your operating system as well as the package manager you use (if any). Please consult the relevant documentation on how to install these extensions.

For the libpcre3-dev package you can use the following commands:

Debian

  1. sudo apt-get install libpcre3-dev

and then try and install Phalcon again

CentOS

  1. sudo yum install pcre-devel

Mac/Osx using MacPorts

Make sure you have MacPorts installed and up to date (sudo port -v selfupdate)

  1. sudo port install php-phalcon4

Mac/Osx using brew

  1. brew install pcre

Without brew, you need to go to the PCRE website and download the latest pcre:

  1. tar -xzvf pcre-8.42.tar.gz
  2. cd pcre-8.42
  3. ./configure --prefix=/usr/local/pcre-8.42
  4. make
  5. make install
  6. ln -s /usr/local/pcre-8.42 /usr/sbin/pcre
  7. ln -s /usr/local/pcre-8.42/include/pcre.h /usr/include/pcre.h

For Maverick

  1. brew install pcre

if it gives you error, you can use

  1. sudo ln -s /opt/local/include/pcre.h /usr/include/
  2. sudo pecl install apc

Installation Platforms

Since Phalcon is compiled as a PHP extension, its installation is somewhat different than any other traditional PHP framework. Phalcon needs to be installed and loaded as a module on your web server.

Linux

To install Phalcon on Linux, you will need to add our repository in your distribution and then install it.

DEB based distributions (Debian, Ubuntu, etc.)

Repository installation

Add the repository to your distribution:

Stable releases

  1. curl -s https://packagecloud.io/install/repositories/phalcon/stable/script.deb.sh | sudo bash

Nightly releases

  1. curl -s https://packagecloud.io/install/repositories/phalcon/nightly/script.deb.sh | sudo bash

Mainline releases (alpha, beta etc.)

  1. curl -s https://packagecloud.io/install/repositories/phalcon/mainline/script.deb.sh | sudo bash

This only needs to be done only once, unless your distribution changes or you want to switch from stable to nightly builds.

Phalcon installation

To install Phalcon you need to type the following commands in your terminal:

  1. sudo apt-get update
  2. sudo apt-get install php7.2-phalcon
Additional PPAs

Ondřej Surý

If you do not wish to use our repository at packagecloud.io, you can always use the one offered by Ondřej Surý.

Installation of the repo:

  1. sudo add-apt-repository ppa:ondrej/php
  2. sudo apt-get update

and Phalcon:

  1. sudo apt-get install php-phalcon

RPM based distributions (CentOS, Fedora, etc.)

Repository installation

Add the repository to your distribution:

Stable releases

  1. curl -s https://packagecloud.io/install/repositories/phalcon/stable/script.rpm.sh | sudo bash

Nightly releases

  1. curl -s https://packagecloud.io/install/repositories/phalcon/nightly/script.rpm.sh | sudo bash

Mainline releases (alpha, beta etc.)

  1. curl -s https://packagecloud.io/install/repositories/phalcon/mainline/script.rpm.sh | sudo bash

This only needs to be done only once, unless your distribution changes or you want to switch from stable to nightly builds.{; .alert .alert-warning }

Phalcon installation

To install Phalcon you need to issue the following commands in your terminal:

  1. sudo yum update
  2. sudo yum install php72u-phalcon
Additional RPMs

Remi

Remi Collet maintains an excellent repository for RPM based installations. You can find instructions on how to enable it for your distribution here.

Installing Phalcon after that is as easy as:

  1. yum install php72-php-phalcon4

Additional versions are available both architecture specific (x86/x64) as well as PHP version specific

FreeBSD

A port is available for FreeBSD. To install it you will need to issue the following commands:

pkg_add
  1. pkg_add -r phalcon
Source
  1. export CFLAGS="-O2 --fvisibility=hidden"
  3. cd /usr/ports/www/phalcon
  5. make install clean
Gentoo

An overlay for installing Phalcon can be found here

macOS

On a macOS system you can compile and install the extension with brew, macports or the source code:

Requirements

  • PHP 7.2.x development resources
  • XCode

Brew

  1. brew tap tigerstrikemedia/homebrew-phalconphp
  2. brew install php72-phalcon
  3. brew install php73-phalcon

MacPorts

  1. sudo port install php72-phalcon
  2. sudo port install php73-phalcon

Edit your php.ini file and then append at the end:

  1. extension=php_phalcon.so

Restart your webserver.

Windows

To use Phalcon on Windows, you will need to install the phalcon.dll. We have compiled several DLLs depending on the target platform. The DLLs can be found in our download page.

Identify your PHP installation as well as architecture. If you download the wrong DLL, Phalcon will not work. phpinfo() contains this information. In the example below, we will need the NTS version of the DLL:

phpinfo

The available DLLs are:

ArchitectureVersionType
x647.xThread safe
x647.xNon Thread safe (NTS)
x867.xThread safe
x867.xNon Thread safe (NTS)

Edit your php.ini file and then append at the end:

  1. extension=php_phalcon.dll

Restart your webserver.

Compile from Sources

Compiling from source is similar to most environments (Linux/macOS).

Requirements

  • PHP 7.2.x/7.3.x development resources
  • GCC compiler (Linux/Solaris/FreeBSD) or Xcode (macOS)
  • re2c >= 0.13
  • libpcre-dev

Compilation

Download the latest zephir.phar from here. Add it to a folder that can be accessed by your system.

Clone the repository

  1. git clone https://github.com/phalcon/cphalcon

Compile Phalcon

  1. cd cphalcon/
  2. git checkout tags/v4.0.0-alpha1 ./
  3. zephir fullclean
  4. zephir build

Check the module

  1. php -m | grep phalcon

You will now need to add extension=phalcon.so to your PHP ini and restart your web server, so as to load the extension.

  1. # Suse: Add a file called phalcon.ini in /etc/php7/conf.d/ with this content:
  2. extension=phalcon.so
  4. # CentOS/RedHat/Fedora: Add a file called phalcon.ini in /etc/php.d/ with this content:
  5. extension=phalcon.so
  7. # Ubuntu/Debian with apache2: Add a file called 30-phalcon.ini in /etc/php7/apache2/conf.d/ with this content:
  8. extension=phalcon.so
  10. # Ubuntu/Debian with php7-fpm: Add a file called 30-phalcon.ini in /etc/php7/fpm/conf.d/ with this content:
  11. extension=phalcon.so
  13. # Ubuntu/Debian with php7-cli: Add a file called 30-phalcon.ini in /etc/php7/cli/conf.d/ with this content:
  14. extension=phalcon.so

The instructions above will compile and install the module on your system. You can also compile the extension and then add it manually in your ini file:

  1. cd cphalcon/
  2. git checkout tags/v4.0.0-alpha1 ./
  3. zephir fullclean
  4. zephir compile
  5. cd ext
  6. phpize
  7. ./configure
  8. make && make install

If you use the above method you will need to add the extension=phalcon.so in your php.ini both for CLI and web server.

Tuning build

By default we compile to be as compatible as possible with all processors (gcc -mtune=native -O2 -fomit-frame-pointer). If you would like instruct the compiler to generate optimized machine code that matches the processor where it is currently running on you can set your own compile flags by exporting CFLAGS before the build.For example

  1. export CFLAGS="-march=native -O2 -fomit-frame-pointer"
  2. zephir build

This will generate the best possible code for that chipset but will likely break the compiled object on older chipsets.

Shared hosting

Running your application on shared hosting might restrict you in installing Phalcon, especially if you do not have root access. Some web hosting control panels luckly have Phalcon support.

cPanel & WHM

cPanel & WHM support Phalcon using Easy Apache 4 (EA4). You can install Phalcon by enabling the module in Easy Apache 4 (EA4).

Plesk

The plesk control panel doesn’t have Phalcon support but you can find installation instructions on the Plesk website