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<?php $a = [0, 0.0, "0", "asdf", '']; foreach ($a as $isZero) { var_dump($isZero, floatval($isZero) === 0.0); echo "\n"; }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 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
int(0) bool(true) float(0) bool(true) string(1) "0" bool(true) string(4) "asdf" bool(true) string(0) "" bool(true)
preferences:
148.98 ms | 404 KiB | 211 Q