3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = null; var_dump($foo === null); var_dump(is_null($foo)); $bar = array('x' => 'x'); var_dump(isset($bar['x'])); var_dump(array_key_exists('x', $bar)); var_dump(isset($baz) ? $baz : null); var_dump($baz);

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)
8.4.120.0120.00920.36
8.4.110.0110.01018.70
8.4.100.0070.00517.77
8.4.90.0130.00817.89
8.4.80.0120.00819.63
8.4.70.0090.00718.12
8.4.60.0110.00818.95
8.4.50.0140.00618.60
8.4.40.0160.00317.89
8.4.30.0000.00818.52
8.4.20.0120.00618.88
8.4.10.0000.00818.07
8.3.250.0060.00619.16
8.3.240.0130.00316.80
8.3.230.0100.01116.77
8.3.220.0110.00817.20
8.3.210.0150.00418.44
8.3.200.0060.00316.76
8.3.190.0080.01218.88
8.3.180.0100.00916.62
8.3.170.0040.01418.90
8.3.160.0040.00317.03
8.3.150.0090.00917.30
8.3.140.0070.00416.34
8.3.130.0100.00016.72
8.3.120.0040.01120.43
8.3.110.0000.00816.57
8.3.100.0030.00516.72
8.3.90.0110.00316.69
8.3.80.0050.00517.97
8.3.70.0060.01018.56
8.3.60.0120.00318.43
8.3.50.0070.00817.46
8.3.40.0150.00018.79
8.3.30.0110.00418.55
8.3.20.0040.00421.78
8.3.10.0050.00323.59
8.3.00.0040.00422.34
8.2.290.0060.00322.09
8.2.280.0100.00918.26
8.2.270.0100.01018.94
8.2.260.0030.00618.31
8.2.250.0000.00916.69
8.2.240.0050.00316.73
8.2.230.0120.00420.94
8.2.220.0090.00924.06
8.2.210.0110.00726.77
8.2.200.0080.00416.63
8.2.190.0180.00016.63
8.2.180.0030.01518.39
8.2.170.0140.00022.96
8.2.160.0070.00720.26
8.2.150.0030.00624.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0000.00926.16
8.2.110.0050.00520.99
8.2.100.0070.00418.02
8.2.90.0030.00618.03
8.2.80.0090.00019.53
8.2.70.0050.00317.92
8.2.60.0030.00618.22
8.2.50.0050.00518.10
8.2.40.0070.00019.30
8.2.30.0060.00319.28
8.2.20.0070.00018.11
8.2.10.0040.00419.05
8.2.00.0070.00019.07
8.1.330.0120.00816.66
8.1.320.0120.00716.06
8.1.310.0050.00318.29
8.1.300.0100.01018.63
8.1.290.0030.00618.88
8.1.280.0040.01125.92
8.1.270.0000.00722.18
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0030.00622.05
8.1.230.0090.00322.73
8.1.220.0030.00617.74
8.1.210.0080.00020.06
8.1.200.0040.00417.25
8.1.190.0030.00617.10
8.1.180.0080.00018.10
8.1.170.0040.00418.65
8.1.160.0000.00718.81
8.1.150.0030.00318.77
8.1.140.0000.00720.82
8.1.130.0000.00720.07
8.1.120.0000.00817.28
8.1.110.0040.00417.36
8.1.100.0060.00317.45
8.1.90.0000.00717.39
8.1.80.0000.00717.29
8.1.70.0000.00717.23
8.1.60.0030.00517.46
8.1.50.0040.00417.41
8.1.40.0040.00417.41
8.1.30.0060.00317.55
8.1.20.0040.00417.52
8.1.10.0080.00017.50
8.1.00.0000.00717.45
8.0.300.0000.00821.94
8.0.290.0000.00716.63
8.0.280.0000.00718.35
8.0.270.0030.00317.22
8.0.260.0000.00619.93
8.0.250.0000.00716.83
8.0.240.0030.00316.98
8.0.230.0000.00716.82
8.0.220.0000.00716.87
8.0.210.0030.00316.90
8.0.200.0000.00716.83
8.0.190.0070.00016.89
8.0.180.0000.00716.93
8.0.170.0080.00016.89
8.0.160.0000.00816.77
8.0.150.0040.00416.89
8.0.140.0000.00716.93
8.0.130.0050.00013.31
8.0.120.0040.00416.84
8.0.110.0030.00316.87
8.0.100.0080.00016.84
8.0.90.0040.00416.88
8.0.80.0040.01116.92
8.0.70.0000.00716.86
8.0.60.0000.00816.82
8.0.50.0070.00016.75
8.0.30.0100.00616.80
8.0.20.0060.01217.23
8.0.10.0080.00017.02
8.0.00.0150.00316.81
7.4.330.0000.00615.55
7.4.320.0000.00716.59
7.4.300.0000.00716.61
7.4.290.0030.00616.46
7.4.280.0040.00416.51
7.4.270.0030.00316.48
7.4.260.0030.00313.21
7.4.250.0040.00416.44
7.4.240.0040.00316.54
7.4.230.0070.00016.48
7.4.220.0050.00216.61
7.4.210.0110.00516.54
7.4.200.0030.00316.42
7.4.140.0160.01217.86
7.4.130.0060.01516.54
7.4.120.0090.00916.59
7.4.110.0130.00916.36
7.4.100.0100.00716.31
7.4.90.0130.00616.49
7.4.80.0100.00719.39
7.4.70.0080.00816.54
7.4.60.0150.00616.47
7.4.50.0120.00316.54
7.4.40.0100.01316.43
7.4.00.0030.00815.17
7.3.330.0040.00416.31
7.3.320.0000.00513.06
7.3.310.0050.00216.39
7.3.300.0000.00616.22
7.3.290.0000.00616.30
7.3.280.0070.00716.32
7.3.260.0130.00616.31
7.3.240.0110.00716.27
7.3.230.0110.01516.30
7.3.210.0030.01316.21
7.3.200.0150.00616.60
7.3.190.0120.00316.43
7.3.180.0060.01616.37
7.3.170.0100.00716.18
7.3.160.0040.01216.35
7.3.120.0030.01014.72
7.3.110.0100.00614.63
7.3.100.0030.00614.49
7.3.90.0030.00814.74
7.3.80.0120.00314.76
7.3.70.0070.00514.67
7.3.60.0080.01014.73
7.3.50.0020.01014.63
7.3.40.0070.00514.70
7.3.30.0060.00614.71
7.3.20.0080.00915.60
7.3.10.0060.00715.71
7.3.00.0070.00915.67
7.2.330.0070.01016.59
7.2.320.0140.00316.71
7.2.310.0060.01216.56
7.2.300.0080.00816.59
7.2.290.0250.00016.77
7.2.240.0030.00914.71
7.2.230.0140.00015.11
7.2.220.0050.00914.68
7.2.210.0070.00614.82
7.2.200.0080.00615.07
7.2.190.0060.00914.79
7.2.180.0100.00314.93
7.2.170.0050.00814.82
7.2.160.0070.00414.78
7.2.150.0090.00815.86
7.2.140.0060.00615.84
7.2.130.0080.00615.78
7.2.120.0230.00815.77
7.2.110.0030.01215.74
7.2.100.0100.00515.84
7.2.90.0090.00815.78
7.2.80.0020.01315.94
7.2.70.0040.01015.90
7.2.60.0140.00515.94
7.2.50.0250.01015.77
7.2.40.0130.00315.88
7.2.30.0130.00515.77
7.2.20.0110.00716.04
7.2.10.0030.01015.95
7.2.00.0080.01215.95
7.1.330.0050.00315.88
7.1.320.0120.00514.84
7.1.310.0230.00414.87
7.1.300.0040.00915.02
7.1.290.0050.00714.82
7.1.280.0070.00814.72
7.1.270.0070.00814.91
7.1.260.0080.00714.66
7.1.250.0090.00314.87
7.1.240.0210.00013.60
7.1.230.0220.00013.89
7.1.220.0140.00813.98
7.1.210.0130.01014.10
7.1.200.0070.01414.02
7.1.190.0110.01113.87
7.1.180.0200.00813.96
7.1.170.0110.01614.05
7.1.160.0120.01214.10
7.1.150.0060.02214.09
7.1.140.0180.00714.00
7.1.130.0090.01513.72
7.1.120.0200.00413.89
7.1.110.0140.00714.14
7.1.100.0180.00913.82
7.1.90.0480.01413.84
7.1.80.0110.00814.06
7.1.70.0170.00414.18
7.1.60.0340.00613.96
7.1.50.0150.00813.73
7.1.40.0100.01014.00
7.1.30.0140.00713.95
7.1.20.0160.00513.91
7.1.10.0110.01513.71
7.1.00.0130.01213.95
7.0.330.0170.00313.59
7.0.320.0160.00913.61
7.0.310.0040.02313.47
7.0.300.0130.00713.39
7.0.290.0120.01213.51
7.0.280.0200.00813.39
7.0.270.0080.01913.23
7.0.260.0160.00813.52
7.0.250.0180.00513.52
7.0.240.0200.00413.69
7.0.230.0110.00813.69
7.0.220.0140.00713.34
7.0.210.0130.00913.74
7.0.200.0170.00613.50
7.0.190.0080.01213.47
7.0.180.0630.01113.52
7.0.170.2280.01313.56
7.0.160.0160.00313.73
7.0.150.0220.00613.49
7.0.140.0120.01013.68
7.0.130.0060.01613.73
7.0.120.0220.00313.53
7.0.110.0160.00613.40
7.0.100.0150.00713.71
7.0.90.0750.01313.55
7.0.80.0140.00613.53
7.0.70.0160.01113.63
7.0.60.0170.00613.29
7.0.50.0260.01613.55
7.0.40.0090.01813.77
7.0.30.0100.01013.46
7.0.20.0240.00013.47
7.0.10.0100.01013.36
7.0.00.0120.00913.76
5.6.400.0160.00614.55
5.6.390.0130.00714.07
5.6.380.0220.00014.49
5.6.370.0140.00614.28
5.6.360.0120.00914.29
5.6.350.0070.01414.34
5.6.340.0170.01014.28
5.6.330.0170.00814.23
5.6.320.0190.00314.29
5.6.310.0070.01014.45
5.6.300.0190.00314.09
5.6.290.0150.00314.07
5.6.280.0160.00514.24
5.6.270.0120.00814.30
5.6.260.0100.01014.24
5.6.250.0140.00714.33
5.6.240.0160.00514.31
5.6.230.0130.00714.23
5.6.220.0220.00614.05
5.6.210.0140.00914.08
5.6.200.0220.03214.00
5.6.190.0130.01014.18
5.6.180.0140.01514.33
5.6.170.0180.00914.12
5.6.160.0180.00314.04
5.6.150.0230.00014.32
5.6.140.0180.00413.94
5.6.130.0190.00014.24
5.6.120.0130.00414.21
5.6.110.0210.00014.32
5.6.100.0060.01314.32
5.6.90.0070.01114.30
5.6.80.0150.00614.29
5.6.70.0130.00614.24
5.6.60.0090.00914.27
5.6.50.0150.00414.23
5.6.40.0070.01514.06
5.6.30.0160.00714.25
5.6.20.0090.01214.16
5.6.10.0130.00414.27
5.6.00.0090.01214.13
5.5.380.0160.00314.18
5.5.370.0040.01614.38
5.5.360.0160.00913.85
5.5.350.0150.01914.21
5.5.340.0120.01014.48
5.5.330.0160.00314.16
5.5.320.0120.00813.98
5.5.310.0120.00914.05
5.5.300.0140.00314.32
5.5.290.0050.01514.16
5.5.280.0110.00814.20
5.5.270.0120.00714.28
5.5.260.0180.02213.90
5.5.250.0100.01413.85
5.5.240.0130.00514.07
5.5.230.0180.00414.28
5.5.220.0060.01213.93
5.5.210.0180.00014.15
5.5.200.0130.00614.16
5.5.190.0140.01014.13
5.5.180.0100.00814.02
5.5.170.0140.02314.14
5.5.160.0120.01213.96
5.5.150.0170.00313.79
5.5.140.0070.01714.41
5.5.130.0200.00314.26
5.5.120.0160.00514.23
5.5.110.0140.00614.14
5.5.100.0090.01414.36
5.5.90.0160.00514.25
5.5.80.0140.00914.05
5.5.70.0210.00314.52
5.5.60.0200.00514.27
5.5.50.0130.01314.39
5.5.40.0080.01214.06
5.5.30.0080.01514.29
5.5.20.0090.00914.21
5.5.10.0080.00814.41
5.5.00.0090.00914.04
5.4.450.0140.00012.46
5.4.440.0070.00712.46
5.4.430.0090.00612.46
5.4.420.0110.00412.46
5.4.410.0070.01012.46
5.4.400.0120.00312.46
5.4.390.0030.01012.46
5.4.380.0150.00012.46
5.4.370.0100.00712.46
5.4.360.0090.00612.46
5.4.350.0160.00312.46
5.4.340.0070.00712.46
5.4.330.0050.00912.46
5.4.320.0110.00612.46
5.4.310.0060.00912.46
5.4.300.0100.01012.46
5.4.290.0120.00312.46
5.4.280.0110.00312.46
5.4.270.0000.01412.46
5.4.260.0090.00412.46
5.4.250.0040.01512.46
5.4.240.0160.00312.46
5.4.230.0110.00412.46
5.4.220.0180.00012.46
5.4.210.0140.00012.46
5.4.200.0160.00312.46
5.4.190.0110.00412.46
5.4.180.0120.00312.46
5.4.170.0050.01012.46
5.4.160.0040.01512.46
5.4.150.0070.00712.46
5.4.140.0120.01112.46
5.4.130.0040.01112.46
5.4.120.0060.01112.46
5.4.110.0150.00512.46
5.4.100.0070.01012.46
5.4.90.0110.01112.46
5.4.80.0110.00412.46
5.4.70.0050.01012.46
5.4.60.0070.00712.46
5.4.50.0160.00012.46
5.4.40.0140.00512.46
5.4.30.0040.01312.46
5.4.20.0130.00312.46
5.4.10.0120.00312.46
5.4.00.0100.00212.46
5.3.290.0100.01312.46
5.3.280.0040.00912.46
5.3.270.0040.00812.46
5.3.260.0100.00312.46
5.3.250.0130.00312.46
5.3.240.0080.00812.46
5.3.230.0130.00512.46
5.3.220.0100.00312.46
5.3.210.0110.00512.46
5.3.200.0170.00012.46
5.3.190.0080.00812.46
5.3.180.0090.00412.46
5.3.170.0160.00012.46
5.3.160.0110.00712.46
5.3.150.0140.00412.46
5.3.140.0130.00612.46
5.3.130.0100.00712.46
5.3.120.0080.00812.46
5.3.110.0120.00012.46
5.3.100.0110.00012.46
5.3.90.0080.00412.46
5.3.80.0090.00212.46
5.3.70.0090.00312.46
5.3.60.0080.00412.46
5.3.50.0110.00412.46
5.3.40.0110.00712.46
5.3.30.0090.00612.46
5.3.20.0060.00612.46
5.3.10.0090.00312.46
5.3.00.0070.00712.46
5.2.170.0080.00512.46
5.2.160.0080.00412.46
5.2.150.0110.00012.46
5.2.140.0000.01112.46
5.2.130.0040.00812.46
5.2.120.0060.00612.46
5.2.110.0090.00612.46
5.2.100.0080.00412.46
5.2.90.0070.00712.46
5.2.80.0080.00812.46
5.2.70.0110.00512.46
5.2.60.0080.00412.46
5.2.50.0030.00912.46
5.2.40.0090.00512.46
5.2.30.0030.00912.46
5.2.20.0090.00412.46
5.2.10.0090.00212.46
5.2.00.0130.00212.46
5.1.60.0110.00212.46
5.1.50.0060.00612.46
5.1.40.0060.00612.46
5.1.30.0050.00512.46
5.1.20.0080.00412.46
5.1.10.0110.00012.46
5.1.00.0090.00012.46
5.0.50.0080.00012.46
5.0.40.0070.00212.46
5.0.30.0000.01012.46
5.0.20.0060.00312.46
5.0.10.0050.00512.46
5.0.00.0090.00012.46
4.4.90.0080.00012.46
4.4.80.0030.00312.46
4.4.70.0000.00912.46
4.4.60.0070.00012.46
4.4.50.0060.00312.46
4.4.40.0050.00512.46
4.4.30.0050.00212.46
4.4.20.0070.00012.46
4.4.10.0070.00012.46
4.4.00.0090.00612.46
4.3.110.0070.00212.46
4.3.100.0070.00012.46
4.3.90.0070.00212.46
4.3.80.0020.00512.46
4.3.70.0000.00712.46
4.3.60.0060.00312.46
4.3.50.0040.00412.46
4.3.40.0110.00412.46
4.3.30.0040.00412.46
4.3.20.0000.00612.46
4.3.10.0040.00412.46
4.3.00.0080.00012.46

preferences:
29.78 ms | 403 KiB | 5 Q