PHP : Appel à une fonction indéfinie exif_read_data

Hello, what is your version of PHP? In the documentation it says: "(PHP 4 >= 4.2.0, PHP 5)"

https://www.php.net/manual/en/function.exif-read-data.php
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There are only 10 types of people, those who understand binary, and the others...

phpinfo => version 5.2.-1

Have you ever encountered this function?
If so, can we modify or enter the information attached to the metadata of the jpg file?

I have already used PHP EXIF functions, but it seems to me that they are only for reading.
But there must be writing APIs:

quick search:
https://www.phpclasses.org/package/1042-PHP-EXIF-information-reader-and-writer.html

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There are only 10 types of people, those who understand binary, and the others...

You need to refer to access this file....
Not very encouraging..

You can find elsewhere, but phpclasses.org is a pretty good site for custom classes of this kind.
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There are only 10 types of people, those who understand binary, and the others...

I thought this function was present in my PHP configuration.
So, I wonder if it's just a PHP extension that needs to be activated.
I don't even know how to do that, if you ask me to use a class!?

I suspect it's a matter of time.
But I would like to know why this reference is not activated?

On the PHP documentation, there is the installation procedure for the basic library:

https://www.php.net/manual/en/book.exif.php

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There are only 10 types of people: those who understand binary, and those who don't...