3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => null, 'b' => ''); var_dump(isset($a['a']));

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)
8.3.60.0190.00316.50
8.3.50.0080.00818.02
8.3.40.0130.00318.77
8.3.30.0090.00618.54
8.3.20.0040.00419.10
8.3.10.0080.00023.66
8.3.00.0110.00420.56
8.2.180.0070.01118.23
8.2.170.0040.01122.96
8.2.160.0110.00422.13
8.2.150.0040.01124.18
8.2.140.0030.01024.66
8.2.130.0040.00426.16
8.2.120.0000.00820.01
8.2.110.0120.00022.25
8.2.100.0090.00317.78
8.2.90.0060.00317.63
8.2.80.0040.00417.97
8.2.70.0000.00917.93
8.2.60.0040.00418.03
8.2.50.0050.00318.10
8.2.40.0030.00619.46
8.2.30.0040.00419.30
8.2.20.0100.00017.98
8.2.10.0000.00717.97
8.2.00.0080.00017.68
8.1.280.0120.00925.92
8.1.270.0000.00818.82
8.1.260.0070.00426.35
8.1.250.0000.00728.09
8.1.240.0060.00322.36
8.1.230.0120.00017.42
8.1.220.0050.00217.74
8.1.210.0040.00418.77
8.1.200.0040.00417.22
8.1.190.0030.00517.00
8.1.180.0050.00318.10
8.1.170.0080.00018.54
8.1.160.0000.00718.80
8.1.150.0040.00418.83
8.1.140.0070.00022.13
8.1.130.0000.00720.21
8.1.120.0070.00017.38
8.1.110.0000.00717.39
8.1.100.0000.00717.37
8.1.90.0040.00417.31
8.1.80.0000.00717.29
8.1.70.0000.00717.27
8.1.60.0000.00817.52
8.1.50.0040.00417.48
8.1.40.0050.00317.43
8.1.30.0000.00817.57
8.1.20.0000.00817.52
8.1.10.0040.00417.41
8.1.00.0050.00217.29
8.0.300.0000.00718.77
8.0.290.0030.00616.61
8.0.280.0070.00018.37
8.0.270.0080.00017.17
8.0.260.0000.00618.28
8.0.250.0000.01016.86
8.0.240.0030.00616.93
8.0.230.0000.00716.74
8.0.220.0030.00316.75
8.0.210.0000.00716.86
8.0.200.0000.00816.76
8.0.190.0030.00616.88
8.0.180.0040.00416.77
8.0.170.0030.00616.71
8.0.160.0000.00716.73
8.0.150.0030.00316.67
8.0.140.0030.00316.64
8.0.130.0040.00413.17
8.0.120.0070.00016.73
8.0.110.0000.00816.83
8.0.100.0050.00216.72
8.0.90.0070.00016.85
8.0.80.0090.01016.75
8.0.70.0040.00416.77
8.0.60.0030.00616.68
8.0.50.0000.00716.77
8.0.30.0130.00417.04
8.0.20.0100.01717.40
8.0.10.0000.00817.00
8.0.00.0100.00716.64
7.4.330.0050.00015.55
7.4.320.0030.00316.42
7.4.300.0040.00416.52
7.4.290.0000.00616.56
7.4.280.0090.00016.44
7.4.270.0000.00716.33
7.4.260.0030.00316.44
7.4.250.0030.00516.48
7.4.240.0040.00416.44
7.4.230.0070.00016.55
7.4.220.0050.00316.59
7.4.210.0060.01216.57
7.4.200.0050.00216.59
7.4.160.0080.01016.39
7.4.140.0090.01117.86
7.4.130.0040.01416.23
7.4.120.0080.01216.41
7.4.110.0200.00016.52
7.4.100.0130.00316.31
7.4.90.0100.00616.44
7.4.80.0070.01119.39
7.4.70.0130.00316.50
7.4.60.0030.01316.55
7.4.50.0090.00616.43
7.4.40.0070.01016.53
7.4.10.0140.00315.02
7.4.00.0060.01114.90
7.3.330.0060.00013.04
7.3.320.0050.00013.10
7.3.310.0030.00616.33
7.3.300.0040.00416.18
7.3.290.0030.00316.22
7.3.280.0140.00316.18
7.3.260.0070.01016.28
7.3.240.0100.00816.19
7.3.230.0100.00716.49
7.3.210.0060.01016.07
7.3.200.0100.00716.24
7.3.190.0120.00916.19
7.3.180.0090.00616.01
7.3.170.0060.01516.23
7.3.160.0140.00316.52
7.3.130.0160.00314.90
7.3.120.0100.00714.69
7.3.110.0080.01014.69
7.3.100.0070.00814.50
7.3.90.0050.00914.61
7.3.80.0050.00814.67
7.3.70.0040.00814.58
7.3.60.0050.00814.58
7.3.50.0050.00814.71
7.3.40.0070.00714.78
7.3.30.0060.00914.62
7.3.20.0030.01016.48
7.3.10.0070.00616.70
7.3.00.0070.00616.54
7.2.330.0070.01016.54
7.2.320.0070.01016.45
7.2.310.0070.01016.56
7.2.300.0060.01016.50
7.2.290.0140.00716.59
7.2.260.0060.01314.97
7.2.250.0100.00714.99
7.2.240.0040.01414.88
7.2.230.0040.01215.02
7.2.220.0040.01014.88
7.2.210.0050.00915.11
7.2.200.0040.00915.03
7.2.190.0060.00714.74
7.2.180.0070.00814.86
7.2.170.0030.01314.98
7.2.160.0070.01014.95
7.2.150.0090.00516.72
7.2.140.0070.00516.84
7.2.130.0070.01016.60
7.2.120.0050.00916.71
7.2.110.0230.00715.74
7.2.100.0240.01015.67
7.2.90.0220.00715.77
7.2.80.0280.00815.58
7.2.70.0260.00915.80
7.2.60.0250.00915.74
7.2.50.0270.01015.75
7.2.40.0240.00615.94
7.2.30.0230.00715.94
7.2.20.0220.01015.79
7.2.10.0320.00915.80
7.2.00.0230.00915.67
7.1.330.0080.00615.61
7.1.320.0070.00715.59
7.1.310.0070.00815.66
7.1.300.0100.00315.56
7.1.290.0050.00715.57
7.1.280.0070.00615.74
7.1.270.0090.00715.54
7.1.260.0060.00415.66
7.1.250.0040.00915.61
7.1.240.0040.01115.41
7.1.230.0280.00614.38
7.1.220.0250.00614.40
7.1.210.0250.00714.26
7.1.200.0370.00714.45
7.1.190.0260.00714.23
7.1.180.0310.00314.32
7.1.170.0270.00614.45
7.1.160.0260.00714.41
7.1.150.0300.00614.41
7.1.140.0300.00914.29
7.1.130.0340.01014.22
7.1.120.0380.01214.46
7.1.110.0260.00414.37
7.1.100.0230.01114.43
7.1.90.0340.00914.37
7.1.80.0320.01014.47
7.1.70.0270.01014.38
7.1.60.0430.00826.37
7.1.50.0480.00726.40
7.1.40.0490.01026.41
7.1.30.0560.01026.25
7.1.20.0480.01226.34
7.1.10.0340.00714.29
7.1.00.0300.00414.39
7.0.330.0030.01115.02
7.0.320.0070.00715.28
7.0.310.0100.00715.45
7.0.300.0040.01115.32
7.0.290.0060.00315.02
7.0.280.0030.00715.23
7.0.270.0070.00715.00
7.0.260.0040.00715.41
7.0.250.0040.00415.22
7.0.240.0000.01115.17
7.0.230.0100.00315.52
7.0.220.0060.00615.39
7.0.210.0030.01014.91
7.0.200.0100.00315.15
7.0.190.0050.00515.14
7.0.180.0060.00615.49
7.0.170.0040.00815.34
7.0.160.0030.01015.40
7.0.150.0070.00315.22
7.0.140.0030.00715.15
7.0.130.0120.00015.27
7.0.120.0030.01315.13
7.0.110.0040.00815.27
7.0.100.0050.00315.41
7.0.90.0120.00315.31
7.0.80.0030.01015.04
7.0.70.0070.00715.18
7.0.60.0070.01015.18
7.0.50.0070.00715.42
7.0.40.0060.00613.49
7.0.30.0000.01313.16
7.0.20.0030.00513.48
7.0.10.0040.00413.30
7.0.00.0050.00513.34
5.6.400.0030.00614.26
5.6.390.0060.00613.83
5.6.380.0040.01014.19
5.6.370.0030.01013.91
5.6.360.0090.00614.49
5.6.350.0060.01214.09
5.6.340.0130.00014.20
5.6.330.0080.00414.04
5.6.320.0000.01014.15
5.6.310.0100.00314.18
5.6.300.0070.00313.95
5.6.290.0070.00714.52
5.6.280.0080.00414.52
5.6.270.0060.00614.20
5.6.260.0040.00414.05
5.6.250.0060.00614.18
5.6.240.0030.01414.51
5.6.230.0100.00014.30
5.6.220.0000.01014.00
5.6.210.0000.00914.44
5.6.200.0060.00614.20
5.6.190.0060.00614.43
5.6.180.0000.00814.43
5.6.170.0030.01014.20
5.6.160.0070.00714.32
5.6.150.0040.01114.09
5.6.140.0040.00814.35
5.6.130.0060.00614.41
5.6.120.0040.00814.38
5.6.110.0000.00914.54
5.6.100.0100.00714.45
5.6.90.0090.00614.36
5.6.80.0080.00814.00
5.6.70.0090.00614.21
5.6.60.0030.00613.99
5.6.50.0030.00614.29
5.6.40.0040.00814.14
5.6.30.0030.00714.21
5.6.20.0000.01214.03
5.6.10.0060.01014.08
5.6.00.0030.00914.05

preferences:
41.47 ms | 400 KiB | 5 Q