Explicit float to int typecast - fixes #311 #336
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This PR fixes the warning:
Reason for this warning is that the
textfunction expects int values for the$xand$ypoints.Since PHP 8.1 this warning notice is emmited, as implicit float -> int conversion is being deprecated.
This PR simply casts the floats to integers explicitly.
Not sure if it would be better to round, floor, or ceil the values?