3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array(null, false, 0, array(), 'false'); foreach ($array as $heru) { echo '!Isset: ' . (!isset($heru) ? 'True' : 'False') . PHP_EOL; echo '!: ' . (!$heru ? 'True' : 'False') . PHP_EOL; echo 'empty: ' . (empty($heru) ? 'True' : 'False') . PHP_EOL; }

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0030.01318.38
8.3.50.0090.00921.21
8.3.40.0210.00018.44
8.3.30.0090.00618.79
8.3.20.0040.00420.03
8.3.10.0060.00322.00
8.3.00.0080.00022.43
8.2.180.0070.01016.38
8.2.170.0120.00622.96
8.2.160.0060.00919.21
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0060.00326.16
8.2.120.0070.00020.74
8.2.110.0130.00322.29
8.2.100.0120.00017.78
8.2.90.0070.00019.05
8.2.80.0040.00418.04
8.2.70.0080.00017.50
8.2.60.0000.00717.93
8.2.50.0080.00018.07
8.2.40.0000.00817.97
8.2.30.0060.00318.11
8.2.20.0040.00417.56
8.2.10.0040.00417.73
8.2.00.0070.00417.59
8.1.280.0120.00625.92
8.1.270.0050.00323.99
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0000.00823.96
8.1.230.0000.01119.08
8.1.220.0000.00817.76
8.1.210.0080.00018.77
8.1.200.0040.00417.35
8.1.190.0040.00417.43
8.1.180.0000.00918.10
8.1.170.0000.00718.59
8.1.160.0000.00722.17
8.1.150.0040.00418.54
8.1.140.0040.00417.43
8.1.130.0000.00817.87
8.1.120.0000.00717.44
8.1.110.0000.01017.45
8.1.100.0040.00417.36
8.1.90.0000.00717.34
8.1.80.0040.00417.40
8.1.70.0030.00317.39
8.1.60.0030.00617.56
8.1.50.0040.00517.39
8.1.40.0000.00817.50
8.1.30.0020.00517.57
8.1.20.0000.00817.53
8.1.10.0000.00717.52
8.1.00.0000.00817.32
8.0.300.0000.00718.77
8.0.290.0000.00717.05
8.0.280.0030.00618.43
8.0.270.0000.00717.24
8.0.260.0000.00916.84
8.0.250.0040.00416.96
8.0.240.0040.00416.84
8.0.230.0030.00316.84
8.0.220.0030.00316.90
8.0.210.0000.00716.90
8.0.200.0000.00616.93
8.0.190.0030.00616.80
8.0.180.0000.00716.96
8.0.170.0030.00616.88
8.0.160.0050.00316.85
8.0.150.0080.00016.86
8.0.140.0030.00316.86
8.0.130.0000.00713.35
8.0.120.0050.00316.78
8.0.110.0020.00516.92
8.0.100.0000.00816.67
8.0.90.0070.00016.79
8.0.80.0090.00916.89
8.0.70.0030.00516.75
8.0.60.0040.00416.95
8.0.50.0000.00716.79
8.0.30.0090.00917.18
8.0.20.0130.00617.40
8.0.10.0020.00716.83
8.0.00.0100.00816.80
7.4.330.0050.00015.00
7.4.320.0030.00316.57
7.4.300.0070.00016.44
7.4.290.0070.00016.59
7.4.280.0030.00716.47
7.4.270.0030.00616.52
7.4.260.0000.00716.41
7.4.250.0000.00716.45
7.4.240.0020.00616.47
7.4.230.0030.00316.70
7.4.220.0110.01116.56
7.4.210.0070.00816.63
7.4.200.0000.00716.59
7.4.190.0050.00216.58
7.4.160.0060.01216.45
7.4.150.0100.01417.40
7.4.140.0070.01217.86
7.4.130.0080.00916.45
7.4.120.0080.01016.49
7.4.110.0080.01016.48
7.4.100.0120.00916.42
7.4.90.0070.01616.67
7.4.80.0030.01319.39
7.4.70.0110.00616.30
7.4.60.0060.01216.56
7.4.50.0080.00016.43
7.4.40.0070.00722.77
7.4.30.0030.01516.37
7.4.00.0030.01215.00
7.3.330.0030.00313.19
7.3.320.0050.00013.27
7.3.310.0000.00716.27
7.3.300.0070.00016.34
7.3.290.0060.00916.43
7.3.280.0100.00516.29
7.3.270.0110.00717.40
7.3.260.0110.00716.33
7.3.250.0140.00316.54
7.3.240.0110.00516.30
7.3.230.0150.00616.54
7.3.210.0060.01416.32
7.3.200.0140.00819.39
7.3.190.0050.01416.37
7.3.180.0090.01016.58
7.3.170.0110.00616.27
7.3.160.0060.00916.55
7.3.120.0110.00714.85
7.3.110.0000.01614.86
7.3.100.0100.00714.80
7.3.90.0030.00614.83
7.3.80.0100.00314.55
7.3.70.0030.01014.69
7.3.60.0110.00014.88
7.3.50.0040.00814.71
7.3.40.0100.00614.83
7.3.30.0090.00614.86
7.3.20.0000.01116.63
7.3.10.0030.01416.44
7.3.00.0070.01016.28
7.2.330.0120.00616.43
7.2.320.0130.01016.37
7.2.310.0060.01216.66
7.2.300.0100.00616.63
7.2.290.0090.00616.61
7.2.250.0070.01015.03
7.2.240.0060.00715.13
7.2.230.0040.01114.65
7.2.220.0000.00915.19
7.2.210.0110.00415.03
7.2.200.0080.00815.01
7.2.190.0040.01114.90
7.2.180.0000.01514.94
7.2.170.0090.00015.05
7.2.60.0000.01316.88
7.1.330.0040.01115.86
7.1.320.0070.01015.90
7.1.310.0030.01015.80
7.1.300.0000.01715.77
7.1.290.0030.01015.95
7.1.280.0000.01415.58
7.1.270.0060.01015.76
7.1.260.0070.00415.60
7.1.200.0030.01015.73
7.1.70.0080.00017.20
7.1.60.0060.00616.89
7.1.50.0090.01216.83
7.1.00.0030.03322.51
7.0.200.0060.01016.42
7.0.140.0130.06721.94
7.0.70.5130.03719.95
7.0.60.0100.07720.01
7.0.50.0000.07317.66
7.0.40.0100.04320.23
7.0.30.0130.07720.04
7.0.20.0370.07320.13
7.0.10.0330.06720.34
7.0.00.0030.04020.33
5.6.280.0100.06721.13
5.6.210.0070.08020.66
5.6.200.0030.08718.10
5.6.190.0000.04720.34
5.6.180.0230.04320.34
5.6.170.0130.08020.38
5.6.160.0030.04720.54
5.6.150.0030.06018.15
5.6.140.0000.08718.16
5.6.130.0070.05718.11
5.6.120.0070.09021.11
5.6.110.0170.06721.00
5.6.100.0030.04021.00
5.6.90.0030.05720.87
5.6.80.0100.04320.50
5.6.70.0170.08020.39
5.5.350.0170.07020.44
5.5.340.0030.04017.92
5.5.330.0130.06720.19
5.5.320.0030.08720.07
5.5.310.0400.06720.30
5.5.300.0070.05718.00
5.5.290.0030.07717.95
5.5.280.0100.06720.87
5.5.270.0100.07720.86
5.5.260.0070.07320.75
5.5.250.0100.08320.69
5.5.240.0030.05320.25
5.4.450.0630.05719.10
5.4.440.1170.05719.48
5.4.430.1000.04719.10
5.4.420.0730.07019.58
5.4.410.0900.07318.97
5.4.400.0370.05319.15
5.4.390.0130.07318.77
5.4.380.0170.05718.72
5.4.370.0400.05718.63
5.4.360.0370.05718.55
5.4.350.0070.03711.97
5.4.340.0070.03611.97
5.4.320.0060.04312.46
5.4.310.0060.03712.45
5.4.300.0080.03412.45
5.4.290.0080.04512.45
5.4.280.0100.04112.35
5.4.270.0050.03612.35
5.4.260.0060.03812.35
5.4.250.0080.04612.35
5.4.240.0040.03712.35
5.4.230.0060.03712.34
5.4.220.0050.04812.34
5.4.210.0100.04012.34
5.4.200.0110.04112.34
5.4.190.0030.04212.34
5.4.180.0040.03712.34
5.4.170.0070.05018.86
5.4.160.0100.05018.88
5.4.150.0070.05718.73
5.4.140.0070.05016.49
5.4.130.0030.05016.21
5.4.120.0130.04016.25
5.4.110.0170.04716.47
5.4.100.0200.03716.39
5.4.90.0100.06316.42
5.4.80.0130.04016.38
5.4.70.0100.04316.32
5.4.60.0130.04016.43
5.4.50.0100.04716.26
5.4.40.0030.05016.48
5.4.30.0100.04716.43
5.4.20.0130.04316.28
5.4.10.0100.05016.45
5.4.00.0130.04015.84
5.3.290.0050.03912.80
5.3.280.0110.03512.71
5.3.270.0030.05714.30
5.3.260.0070.05014.62
5.3.250.0200.03714.46
5.3.240.0100.05314.63
5.3.230.0030.05014.59
5.3.220.0030.05314.58
5.3.210.0030.05714.43
5.3.200.0130.04314.59
5.3.190.0070.05014.60
5.3.180.0100.04714.61
5.3.170.0100.04714.61
5.3.160.0030.05014.57
5.3.150.0000.05714.41
5.3.140.0130.04314.57
5.3.130.0070.06714.56
5.3.120.0070.05314.64
5.3.110.0100.05014.38
5.3.100.0170.04313.88
5.3.90.0000.05314.17
5.3.80.0100.04314.04
5.3.70.0130.05314.02
5.3.60.0100.05014.15
5.3.50.0170.04714.09
5.3.40.0070.05013.99
5.3.30.0270.05013.68
5.3.20.0100.04713.73
5.3.10.0170.04013.59
5.3.00.0130.04013.48
5.2.170.0070.06311.16
5.2.160.0000.04311.15
5.2.150.0100.05311.14
5.2.140.0100.03711.23
5.2.130.0030.04011.02
5.2.120.0070.03711.12
5.2.110.0030.04011.19
5.2.100.0100.03311.25
5.2.90.0070.03710.99
5.2.80.0030.04010.92
5.2.70.0070.03711.20
5.2.60.0030.04010.94
5.2.50.0130.03311.04
5.2.40.0100.03311.00
5.2.30.0070.03710.87
5.2.20.0030.04010.95
5.2.10.0130.03010.69
5.2.00.0000.04710.77
5.1.60.0070.03010.05
5.1.50.0030.04310.14
5.1.40.0030.03710.01
5.1.30.0070.03310.09
5.1.20.0000.04010.42
5.1.10.0070.03310.12
5.1.00.0000.0379.99
5.0.50.0030.0308.45
5.0.40.0070.0238.31
5.0.30.0100.0338.23
5.0.20.0000.0308.28
5.0.10.0100.0208.25
5.0.00.0070.0378.16
4.4.90.0000.0237.09
4.4.80.0000.0237.09
4.4.70.0070.0177.09
4.4.60.0030.0207.09
4.4.50.0000.0237.09
4.4.40.0030.0307.09
4.4.30.0000.0237.09
4.4.20.0100.0177.09
4.4.10.0070.0177.09
4.4.00.0000.0337.09
4.3.110.0030.0207.09
4.3.100.0030.0207.09
4.3.90.0000.0207.09
4.3.80.0000.0337.09
4.3.70.0000.0207.09
4.3.60.0070.0277.09
4.3.50.0070.0207.09
4.3.40.0070.0277.09
4.3.30.0000.0237.09
4.3.20.0000.0237.09
4.3.10.0100.0237.09
4.3.00.0070.0277.85

preferences:
44.97 ms | 401 KiB | 5 Q