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<?php $num= "-50.00" ; $num = (int)$num; if($num < 0){ echo " number is negative"; }else{ echo "number is not negative"; } ?>
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
number is negative

preferences:
164.15 ms | 403 KiB | 227 Q