List used PHP modules in code base

Question

I need to list all PHP extensions that's required by a given code base. What would be the best way to tackle this problem?

My initial thought is to write a script that goes through all files and find all functions and compare them to a given extension/function database. Any other suggestions?

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Update: I already did some Bash script with grep and using get_loaded_modules, get_extension_funcs PHP functions, but this extension is exactly what I was looking for.

Balfore

Does this answer your question? How to automatically determine which PHP extensions are used by a project? – Ontogeny

Answer 1

PHP CompatInfo (not the PEAR extension) is great once you learn how to use it:

1. Go to PHP CompatInfo site
2. Download and install the tool
3. Copy the configuration file contents from their site and put it into a new file named phpcompatinfo.json

4. run the following command (current dir being the directory where phpcompatinfo.json is placed)

   phpcompatinfo analyser:run . extension

You will get an output like this:

Extensions Analysis

 Extension  REF EXT min/Max PHP min/Max
 Core           4.2.0       4.2.0
 PDO            5.1.0       5.1.0
 Reflection     5.0.0       5.0.0
 calendar       4.0.0       4.0.0
 date           5.3.0       5.3.0
 filter         0.11.0      5.0.0
 gettext        4.0.0       4.0.0
 iconv          4.0.5       4.0.5
 json           5.4.0       5.4.0
 mbstring       4.4.3       4.4.3
 pcre           4.0.0       4.0.0
 session        4.0.3       4.0.3
 spl            5.4.0       5.4.0
 standard       5.5.0       5.5.0
 Total [14]                 5.5.0

Achelous

where is the phpcompatinfo.json? Do we have to make a file or replace an existing file? It says the src/ dir but I can't find it. – Notions

Okay, so for those of you who had a little trouble here's what I did. You can just put it (phpcompatinof.json) in your etc folder (linux) /etc/ and it will run. – Notions

I just edited the answer to make it clear that phpcompatinfo.json is a new file to be created, not an existing one – Achelous

Great answer! Why haven't I found this years ago? – Backdrop

The phpcompatinfo.json file is no longer required for basic usage, the docs have been updated. Now you just have to install the tool and execute phpcompatinfo analyser:run . – Jara

Answer 2

There is a PEAR package that does that, from what I remember : PHP_CompatInfo :

Find out the minimum version and the extensions required for a piece of code to run

See The Command-Line Parser to know how to run it from the Command Line, and to get some examples of output.

(It's marked as not maintained anymore, so there might be some troubles with recent versions of PHP, but last time I used it -- maybe one year ago -- it worked fine)

Polygynous

The latest version (december 2013) of PHP_CompatInfo is available from bartlett.laurent-laville.org – Argosy

Answer 3

As an alternative to PHP CompatInfo, I've developed a tool for PHP 7 that works similarly. It doesn't provide as much detailed information as CompatInfo, but it does list the extensions required by your project.

See: https://github.com/RogerGee/php-ext-depends

Example usage:

$ php depends.php --suffix .php ~/code/open-source/drupal/core
Core (builtin)
ctype
curl
date (builtin)
dom
filter
hash
iconv
json
libxml
pcre (builtin)
PDO
posix
readline
Reflection (builtin)
session
SimpleXML
SPL (builtin)
standard (builtin)
xml
zlib

Regimentals