I have multiple versions of PHP using brew. When I want to switch between for example from PHP 7.4 to PHP 8.1 I use this command
brew unlink php@7.4 && brew link php@8.1
When I download Xdebug for PHP 8.1 I use
pecl install xdebug
It would install Xdebug's latest version until now. So if I write
pecl list
I get
Package Version State
imagick 3.7.0 stable
xdebug 3.2.2 stable
When I open /usr/local/etc/php/8.1/php.ini I get
zend_extension="xdebug.so"
That's fine until now.
Now the problem is when I want to install a lower version for my PHP 7.4 (because the newer version of Xdebug is not compatible with PHP 7.4). So according to this page I should download at most xdebug-3.1 for PHP 7.
So I will switch to PHP 7 using
brew unlink php@8.1 && brew link php@7.4
then I download a compatible Xdebug version with PHP 7.4 using this command
pecl install xdebug-3.1.6
It will be downloaded fine, but I get this issue whenever I use PHP, e.g php -v
Failed loading /usr/local/opt/php@7.4/pecl/20210902/xdebug.so: dlopen(/usr/local/opt/php@7.4/pecl/20210902/xdebug.so, 0x0009): symbol not found in flat namespace (_instanceof_function_slow)
I guess because it didn't know the path for Xdebug.
If I open /usr/local/etc/php/7.4/php.ini I get
zend_extension="xdebug.so"
I tried to change the path in php.ini in PHP 7 to /usr/local/opt/php@7.4/pecl/20210902/xdebug.so because there is an Xdebug file in this path, but the problem remains.
How can I fix this problem?
