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- PHP 8.0.8 (cli) (built: Jul 1 2021 15:26:46) ( NTS )
- 1000000 итераций, значение $var в 50% - строка, в других [bool, null, ] или пустая строка в зависимости от условий сравнения
- empty($var) 0.39055895805359
- $var === '' 0.39829707145691
- $var === null 0.39125895500183
- !$var 0.39125800132751
- isset($var) 0.38860511779785
- is_null($var) 0.38995289802551
- (bool)$var 0.3905131816864
- !!$var 0.39541697502136
- empty($var) 0.41743803024292
- $var === '' 0.4270761013031
- $var === null 0.4282009601593
- !$var 0.41868305206299
- isset($var) 0.41554188728333
- is_null($var) 0.41786217689514
- (bool)$var 0.42031908035278
- !!$var 0.42372703552246
- empty($var) 0.40630888938904
- $var === '' 0.40558004379272
- $var === null 0.4005389213562
- !$var 0.40333104133606
- isset($var) 0.40963411331177
- is_null($var) 0.40061807632446
- (bool)$var 0.40126800537109
- !!$var 0.40617489814758
- empty($var) 0.3911600112915
- $var === '' 0.39613509178162
- $var === null 0.39545702934265
- !$var 0.39535403251648
- isset($var) 0.3920431137085
- is_null($var) 0.39910697937012
- (bool)$var 0.40075492858887
- !!$var 0.44610214233398
- empty($var) 0.39167618751526
- $var === '' 0.40036201477051
- $var === null 0.39265394210815
- !$var 0.39718794822693
- isset($var) 0.38869500160217
- is_null($var) 0.3905189037323
- (bool)$var 0.43547606468201
- !!$var 0.3946840763092
- empty($var) 0.39024996757507
- $var === '' 0.40233683586121
- $var === null 0.38949203491211
- !$var 0.3917510509491
- isset($var) 0.40109610557556
- is_null($var) 0.45366191864014
- (bool)$var 0.38428211212158
- !!$var 0.39220094680786
- empty($var) 0.39173579216003
- $var === '' 0.39885115623474
- $var === null 0.39101600646973
- !$var 0.39422082901001
- isset($var) 0.39571094512939
- is_null($var) 0.39422488212585
- (bool)$var 0.39612793922424
- !!$var 0.39549779891968
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