• Call to undefined function imap_open()

    From Mark5320@21:1/5 to All on Sat Sep 3 10:34:23 2022
    $ php -r 'imap_open();'
    PHP Fatal error: Uncaught Error: Call to undefined function imap_open()
    in Command line code:1

    I know, you have to install the appropriate extension (sudo apt install SOMETHING).
    But there is a special command (for Ubuntu 22.04.1) to establish
    precisely (without going to google) what extension (package) should we
    install?
    For example

    $ php-owner-package imap_open
    imap_open() function it's included into package SOMETHING

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  • From J.O. Aho@21:1/5 to All on Sat Sep 3 11:45:56 2022
    On 03/09/2022 10.34, Mark5320 wrote:
    $ php -r 'imap_open();'
    PHP Fatal error:  Uncaught Error: Call to undefined function imap_open()
    in Command line code:1

    I know, you have to install the appropriate extension (sudo apt install SOMETHING).

    sudo apt install php-imap

    But there is a special command (for Ubuntu 22.04.1) to establish
    precisely (without going to google) what extension (package) should we install?
    For example

    $ php-owner-package imap_open
    imap_open() function it's included into package SOMETHING

    No there ain't a tool to tell you to which extension a function may
    belong to.

    As the extensions tend to have functions with the extension name, so
    that the common part of the functions name and search for it with

    apt-cache search imap | grep php

    and you would have a good chance to see the extension as part of the
    result, sure not all extensions do have this the uniformity in function
    names and not all are included in the official ubuntu/debian repository.

    --
    //Aho

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  • From Mark5320@21:1/5 to All on Sat Sep 3 13:01:56 2022
    Il 03/09/22 11:45, J.O. Aho ha scritto:
    $ php -r 'imap_open();'
    PHP Fatal error:  Uncaught Error: Call to undefined function
    imap_open() in Command line code:1

    I know, you have to install the appropriate extension (sudo apt
    install SOMETHING).

    sudo apt install php-imap

    Where is the official documentation that says you need to install this extension?
    How did you come to this conclusion?

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  • From J.O. Aho@21:1/5 to All on Sat Sep 3 13:30:28 2022
    On 03/09/2022 13.01, Mark5320 wrote:
    Il 03/09/22 11:45, J.O. Aho ha scritto:
    $ php -r 'imap_open();'
    PHP Fatal error:  Uncaught Error: Call to undefined function
    imap_open() in Command line code:1

    I know, you have to install the appropriate extension (sudo apt
    install SOMETHING).

    sudo apt install php-imap

    Where is the official documentation that says you need to install this extension?

    The official php documentation mentions these in the build instructions,
    but talking about which features you need, you need to give different
    build options, each of those build options are generally made into a php extending package in different Linux distributions.

    The Unix-philosophy has an element of having only the bar minimum
    installed that makes it possible to do what you need to do, so you want
    to connect to a postgresql database, then you don't need all the stuff
    to connect to mysql nor mssql databases.

    This also has a security benefit, the attack vector becomes smaller the
    less extensions you have installed, as you know from time to time there
    are vulnerabilities found and say there would be a xml related
    vulnerability in php version you are using, but if you don't have the
    xml support built in nor an xml extension, then you not affected by that vulnerability, but if you have xml support then you are vulnerable.

    See the positive thing, all you need to do is use apt to install the extensions, while those with microsoft windows has to search on the net
    to find the extension built for the same version of php as you are using
    and you won't be sure if the one you find has a backdoor built into it
    or not.


    How did you come to this conclusion?

    Been around Linux for a long time and even been building packages once i
    the time.

    --
    //Aho

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  • From Mark5320@21:1/5 to All on Sat Sep 3 15:00:28 2022
    Il 03/09/22 13:30, J.O. Aho ha scritto:

    The official php documentation mentions these in the build instructions,
    but talking about which features you need, you need to give different
    build options, each of those build options are generally made into a php extending package in different Linux distributions.

    The Unix-philosophy has an element of having only the bar minimum
    installed that makes it possible to do what you need to do, so you want
    to connect to a postgresql database, then you don't need all the stuff
    to connect to mysql nor mssql databases.

    This also has a security benefit, the attack vector becomes smaller the
    less extensions you have  installed, as you know from time to time there
    are vulnerabilities found and say there would be a xml related
    vulnerability in php version you are using, but if you don't have the
    xml support built in nor an xml extension, then you not affected by that vulnerability, but if you have xml support then you are vulnerable.

    See the positive thing, all you need to do is use apt to install the extensions, while those with microsoft windows has to search on the net
    to find the extension built for the same version of php as you are using
    and you won't be sure if the one you find has a backdoor built into it
    or not.


    How did you come to this conclusion?

    Been around Linux for a long time and even been building packages once i
    the time.

    thanks from info

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  • From Mark5320@21:1/5 to All on Sat Sep 3 15:05:49 2022
    Il 03/09/22 15:00, Mark5320 ha scritto:

    thanks from info

    by the way, what are the differences between the various versions found

    ~$ apt search imap | grep php



    WARNING: apt does not have a stable CLI interface. Use with caution in
    scripts.



    php-imap/jammy,jammy 2:8.1+92ubuntu1 all

    php-net-imap/jammy,jammy 1:1.1.3-2.1 all

    php8.1-imap/jammy-updates 8.1.2-1ubuntu2.3 amd64

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  • From J.O. Aho@21:1/5 to All on Sat Sep 3 17:30:25 2022
    On 03/09/2022 15.05, Mark5320 wrote:
    Il 03/09/22 15:00, Mark5320 ha scritto:

    thanks from info

    by the way, what are the differences between the various versions found

    I'm not a Ubuntu user, so not fully aware of everything,
    but I think the php version is a php 7.x while php8.1 is as you may have guessed php 8.1.x

    php-imap/jammy,jammy 2:8.1+92ubuntu1 all
    php8.1-imap/jammy-updates 8.1.2-1ubuntu2.3 amd64

    This I think is the php's default imap implementation for php7 and php8.1


    php-net-imap/jammy,jammy 1:1.1.3-2.1 all

    This is an optional imap implementation built on top of PEAR's Net_Socket.
    I would recommend against this one, there been no development since 2014.

    More about PEAR: https://pear.php.net

    --

    //Aho

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  • From John-Paul Stewart@21:1/5 to All on Sat Sep 3 15:08:39 2022
    On 2022-09-03 09:05, Mark5320 wrote:

    by the way, what are the differences between the various versions found

    ~$ apt search imap | grep php



    WARNING: apt does not have a stable CLI interface. Use with caution in scripts.



    php-imap/jammy,jammy 2:8.1+92ubuntu1 all

    php-net-imap/jammy,jammy 1:1.1.3-2.1 all

    php8.1-imap/jammy-updates 8.1.2-1ubuntu2.3 amd64

    In the Debian/Ubuntu packaging, php-imap is a generic package that automatically pulls in whatever the current version is. In your case,
    that's php8.1-imap. The result is that if you install php-imap today,
    when 8.2 or 9.0 comes along the distribution will automatically upgrade
    you to that version. (The php8.1-imap package will still be installed
    as a dependency of php-imap, but it will flagged as such in the package database, thus subject to be upgraded.)

    Conversely, if you manually install php8.1-imap today (so that is marked
    as "manual" in the package database), then when the next version comes
    along the distro will NOT automatically upgrade it. If you want the
    next version, you'll have to install that manually when you're ready.

    So, install the generic one if you want automatic version updates or
    install the versioned one if you have a specific need to stay on that
    version.

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  • From Mark5320@21:1/5 to All on Mon Sep 5 11:23:05 2022
    Il 03/09/22 21:08, John-Paul Stewart ha scritto:
    ...

    thanks

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  • From Kristjan Robam@21:1/5 to All on Fri Sep 9 04:00:12 2022
    Implement this then.

    Mark5320 kirjutas Laupäev, 3. september 2022 kl 11:34:31 UTC+3:
    $ php -r 'imap_open();'
    PHP Fatal error: Uncaught Error: Call to undefined function imap_open()
    in Command line code:1

    I know, you have to install the appropriate extension (sudo apt install SOMETHING).
    But there is a special command (for Ubuntu 22.04.1) to establish
    precisely (without going to google) what extension (package) should we install?
    For example

    $ php-owner-package imap_open
    imap_open() function it's included into package SOMETHING

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  • From Arno Welzel@21:1/5 to All on Fri Sep 9 16:30:27 2022
    Kristjan Robam, 2022-09-09 13:00:

    Implement this then.

    Mark5320 kirjutas Laupäev, 3. september 2022 kl 11:34:31 UTC+3:
    $ php -r 'imap_open();'
    PHP Fatal error: Uncaught Error: Call to undefined function imap_open()
    in Command line code:1
    [...]


    This is not a helpful answer.

    1) Please put your response *below* a quote - text is read from top to
    bottom. This is Usenet not e-mail.

    2) imap_open() is not to be implemented but provided by an PHP extension
    which has to be enabled:

    <https://www.php.net/manual/en/function.imap-open.php>

    <https://www.php.net/manual/en/imap.setup.php>


    --
    Arno Welzel
    https://arnowelzel.de

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