PHP functions not defined in command line

Question

It seems quite strange that some function is defined when it is called by web browsers, but it becomes undefined in command line mode.

For example,

<?php
echo function_exists('mb_detect_encoding') ? 'yes' : 'no';
?>

When it runs in the browsers, it prints "yes" which means this function is already defined.

But when I run this piece of code in command line, it prints "no"

Why? what settings did I miss in command line mode?

Strange? Web browser's don't normally run the command-line version of PHP: they run PHP as web server module or CGI/FastCGI. — Álvaro González
– Álvaro González, Commented Apr 18, 2013 at 14:52
@Steven You wouldn't be getting undefined function if you had. — Mike B
– Mike B, Commented Apr 18, 2013 at 16:05

lcapra · Accepted Answer · 2013-04-18 14:52:01Z

2

on linux you should check /etc/php5/cli/conf.d to se if it is enabled. Otherwise try copying from another enviroment eg /etc/php5/apache2/conf.d

answered Apr 18, 2013 at 14:52

lcapra

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hek2mgl · Accepted Answer · 2013-04-18 14:53:04Z

1

This is because of the compile time options your distributions selects. It seems that they have enabled it in the cli interpreter but not in the apache module.

Check the installation instructions of the mbstring extension. If you really need it you'll have to compile php for yourself.

answered Apr 18, 2013 at 14:53

hek2mgl

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bwoebi · Accepted Answer · 2013-04-18 15:00:36Z

1

The command php -m lists your active modules (extensions).

To see if it's active, search for mbstring in this list. If it isn't there, it may be:

Only enabled in the apache_handler php.ini

or

Disabled in the cli php.ini

Add an extension=mbstring.so to your global php.ini to enable it. (If it is built as shared library.)

answered Apr 18, 2013 at 15:00

bwoebi

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pmayer · Accepted Answer · 2013-04-18 15:07:25Z

0

When calling the Script via CommandLine (CLI) be sure to use the same config File as the Webserver uses when it executes PHP.

from "php --help":

-c | Look for php.ini file in this directory

nowadays the modules, mb_string is one of them, are loaded dynamicly...

edited Apr 18, 2013 at 15:07

answered Apr 18, 2013 at 14:53

pmayer

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2 Comments

Jocelyn Over a year ago

Click "edit" to update your answer. (if that was what you wanted to do)

pmayer Over a year ago

sorry, fairly new to stackoverflow :)

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