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<?php error_reporting(0); $r = 1.0/0.0; var_dump($r); if ( is_finite($r) ) { if (is_bool($r) && $r === FALSE) { echo 'not infinite'; } } else if (is_infinite( $r )){ echo INF; }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6

Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
float(INF) INF
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
bool(false) not infinite
preferences:
131.61 ms | 402 KiB | 198 Q