I've checked my code compatibility with PHP 7 using PHP Code Sniffer, PHPCompatibility and I got the error bellow.
[1mFILE: ...php7/wp-admin/includes/class-pclzip.php[0m
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[1mFOUND 2 ERRORS AFFECTING 2 LINES[0m
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5345 | [31mERROR[0m | [1mFunction set_magic_quotes_runtime() is deprecated since
| | PHP 5.3 and removed since PHP 7.0[0m
| | (PHPCompatibility.PHP.DeprecatedFunctions.set_magic_quotes_runtimeDeprecatedRemoved)
5376 | [31mERROR[0m | [1mFunction set_magic_quotes_runtime() is deprecated since
| | PHP 5.3 and removed since PHP 7.0[0m
| | (PHPCompatibility.PHP.DeprecatedFunctions.set_magic_quotes_runtimeDeprecatedRemoved)
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class-pclzip.php comes with Wordpress default installation. I would like to know if anyone was found an issue with this running on PHP 7. There was a fix for this but I wanted to double check anyway once this error is still appearing on my code sniffer log .