undefined symbol: i2c_smbus_write_word_data

[kepon85]

Hello,
I compiled and added i2c in extension but I get an error message when I try to run a command (i2cset for example)

A simple script :

<?php
i2cset(1, 0x04, 0x04, 0x61);
?>

Return :
php: symbol lookup error: /usr/lib/php/20180731/i2c.so: undefined symbol: i2c_smbus_write_word_data

If I test with your example I get:

root@pi0(rw):/opt/i2c# php i2c.php 
Functions available in the test extension:
i2cget
i2cset

PHP Fatal error:  Uncaught Error: Call to undefined function confirm_i2c_compiled() in /opt/i2c/i2c.php:16
Stack trace:
#0 {main}
  thrown in /opt/i2c/i2c.php on line 16

Do you have an idea to help me?

Thank you in advance for your support!
And thank you for this code!

David

[nineff]

likewise, i2c_smbus_read_word_data ist also undefined

[halfer]

Looks like it is not particular to a specific PHP ext project, I get it on this separate repo: embedded-php/ext-i2c#2