Hi,
I have no problem with PHP 7.3.0 64 bit, Wampserver 3.1.6 with Windows 7 Pro 64 bit.
One last thing to do before switching to PHP 7.3.0 would be to disable xDebug which, for PHP 7.3.0 is in beta version.
In the file : wamp64\bin\php\php7.3.0\phpForApache.ini
Replace :
zend_extension="c:/wamp64/bin/php/php7.3.0/zend_ext/php_xdebug-2.7.0beta1-7.3-vc15-x86_64.dll"
by
;zend_extension="c:/wamp64/bin/php/php7.3.0/zend_ext/php_xdebug-2.7.0beta1-7.3-vc15-x86_64.dll"
That is, comment on the line by adding a semicolon at the beginning.
Save the modified file.
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