PHP is a popular general-purpose scripting language that is especially suited to web development. Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.

The PHP manual is available at php.net/docs.

At every compilation, the last patch version is fetched.

EBNF:

<php_version_installed>   ::= <php_version> <separator> <patch>
<php_version>             ::= <major> <separator> <minor>
<major>                   ::= "7"
<separator>               ::= "."
<minor>                   ::= "2" | "4"
<patch>                   ::=  ( "0" | [1-9] [0-9]*)

• PHP_FPM_SOCKET=( 0 | 1 ) (default 1)
  • To enable PHP-FPM socket, set ENABLE_FPM_SOCKET env var to 1 to create and communicate through unix socket file /run/php/php7-fpm.sock or set to 0 for communication through tcp/9000 port instead.
• ENABLE_OPCACHE=( 0 | 1 ) (default 1)
• ENABLE_PARALLEL=( 0 | 1 ) (default 1)
• ENABLE_XDEBUG=( 0 | 1 ) (default 0)
• XDEBUG_CONFIG=""
  • If Xdebug is enabled, the PHP-FPM expects xdebug configuration through XDEBUG_CONFIG env var.

  If PHP_FPM_SOCKET == 0, xdebug.remote_port must be different of 9000.

When running docker image as a daemon, /run/start.sh a shell script is executed at startup

    $ docker run -d -it --name ${my_container_name} -v "${host_path}:/var/www/html" zaioll/php-zts:${php_version}

To share the socket file, create shared volume first:

    $ docker volume create sock

Then, run the container passing the created shared volume.

    $ docker run -d -it -v "sock:/run/php" -v "${host_path}:/var/www/html" --name ${my_container_name} zaioll/php-zts:${php_version}

When running docker image as a iteractive form, the /run/start.sh shell script is not executed. Then, PHP-FPM is not started. It needs manual run.

• Composer 2.X for dependency management in PHP.
• PhpBench tool.
• Phive

• Parallel
• Swoole
• Decimal
• Xdebug
• Memcached
• Mongodb
• Redis

The benchmarks were generated by the Apache ab, making requests on index.php script over the PHP built-in web server and plotted with the gnuplot program with configurations inspired in this article.

// /index.php
<?php
for ($i = 0; $i < 50; $i++) {
    if ($i % 2 == 0) {
        echo ".";
        continue;
    }
    echo "*";
}

[opcache]
zend_extension=${extension_dir}/opcache.so
opcache.enable=1
opcache.enable_cli=0
opcache.validate_timestamps=0
opcache.max_accelerated_files=65406
opcache.memory_consumption=256
opcache.interned_strings_buffer=12
opcache.fast_shutdown=1
opcache.enable_file_override=1

# Tell gnuplot to use tabs as the delimiter instead of spaces (default)
set datafile separator '\t'

# Output to a jpeg file
set terminal jpeg size 1280,720

# Set the aspect ratio of the graph
set size 1, 1

# The file to write to
set output "<connections>_<concurrency>.jpg"

# The graph title
set title "Benchmark testing with opcache enabled and xdebug disabled: ab -n <connections> -c <concurrency> -g out.data http://localhost/"

# Where to place the legend/key
set key left top

# Draw gridlines oriented on the y axis
set grid y

# Specify that the x-series data is time data
set xdata time

# Specify the *input* format of the time data
set timefmt "%s"

# Specify the *output* format for the x-axis tick labels
set format x "%S"

# Label the x-axis
set xlabel 'seconds'

# Label the y-axis
set ylabel "response time (ms)"

# Plot the data
plot "out.data" every ::2 using 2:5 title 'response time' with points 
exit

• 300 requests, 80 concurrent connections

• 2000 requests, 800 concurrent connections

• 5000 requests, 800 concurrent connections

• 50000 requests, 1020 concurrent connections

MIT