In a specific case, having this issue, it was workarounded by replacing the calls to "gzopen" with "gzopen64": https://wordpress.org/support/topic/missing-zlib-extensions-php-error
I tested in my Wordpress installation and it worked perfectly, while other solutions didn't. HTH.
In a specific case, having this issue, it was workarounded by replacing the calls to "gzopen" with "gzopen64": /wordpress. org/support/ topic/missing- zlib-extensions -php-error
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I tested in my Wordpress installation and it worked perfectly, while other solutions didn't. HTH.