3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = new stdClass(); $x->a = 1; var_dump(isset($x->a->b->c)); var_dump(empty($x->a->b->c));

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)
8.3.60.0140.00018.43
8.3.50.0170.00718.29
8.3.40.0040.01118.71
8.3.30.0070.00718.61
8.3.20.0040.00419.18
8.3.10.0060.00321.64
8.3.00.0040.00420.77
8.2.180.0100.01316.50
8.2.170.0150.00322.96
8.2.160.0060.00921.02
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0040.00417.98
8.2.120.0030.00526.35
8.2.110.0030.00620.78
8.2.100.0140.00317.75
8.2.90.0000.00917.75
8.2.80.0050.00517.97
8.2.70.0040.00417.66
8.2.60.0070.00018.09
8.2.50.0040.00418.10
8.2.40.0080.00019.34
8.2.30.0060.00319.19
8.2.20.0000.00717.99
8.2.10.0040.00418.05
8.2.00.0030.00517.65
8.1.280.0100.00725.92
8.1.270.0080.00018.82
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00722.34
8.1.230.0070.00422.13
8.1.220.0000.00817.74
8.1.210.0050.00318.77
8.1.200.0030.00617.36
8.1.190.0060.00317.00
8.1.180.0000.00818.10
8.1.170.0060.00318.38
8.1.160.0040.00418.82
8.1.150.0050.00218.79
8.1.140.0070.00022.14
8.1.130.0060.00620.08
8.1.120.0040.00417.48
8.1.110.0080.00017.29
8.1.100.0030.00517.35
8.1.90.0000.00917.41
8.1.80.0080.00017.40
8.1.70.0020.00517.28
8.1.60.0030.00617.54
8.1.50.0070.00317.41
8.1.40.0050.00317.46
8.1.30.0000.00817.66
8.1.20.0040.00417.62
8.1.10.0040.00417.63
8.1.00.0040.00417.57
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0070.00018.38
8.0.270.0030.00317.19
8.0.260.0040.00418.43
8.0.250.0030.00716.77
8.0.240.0030.00316.89
8.0.230.0070.00016.80
8.0.220.0030.00616.82
8.0.210.0030.00316.89
8.0.200.0000.00616.80
8.0.190.0070.00016.88
8.0.180.0000.00716.74
8.0.170.0000.00816.75
8.0.160.0000.00716.86
8.0.150.0000.00716.63
8.0.140.0000.00716.84
8.0.130.0000.00513.23
8.0.120.0070.00016.82
8.0.110.0040.00416.79
8.0.100.0040.00416.74
8.0.90.0030.00316.61
8.0.80.0100.00516.84
8.0.70.0000.00816.82
8.0.60.0040.00416.82
8.0.50.0040.00416.70
8.0.30.0080.00917.10
8.0.20.0100.00917.40
8.0.10.0040.00416.78
8.0.00.0140.00816.61
7.4.330.0020.00215.55
7.4.320.0000.00716.66
7.4.300.0070.00016.55
7.4.290.0000.00716.63
7.4.280.0090.00016.45
7.4.270.0000.00716.55
7.4.260.0030.00316.58
7.4.250.0040.00416.43
7.4.240.0080.00016.65
7.4.230.0000.00716.67
7.4.220.0040.00416.54
7.4.210.0090.00616.47
7.4.200.0000.00716.40
7.4.160.0110.00616.50
7.4.140.0070.01317.86
7.4.130.0110.01116.38
7.4.120.0100.00916.48
7.4.110.0070.01116.32
7.4.100.0130.00316.50
7.4.90.0080.00816.34
7.4.80.0100.00719.39
7.4.70.0060.00916.34
7.4.60.0100.00716.30
7.4.50.0120.00416.26
7.4.40.0100.00716.59
7.4.00.0090.00614.92
7.3.330.0000.00513.09
7.3.320.0000.00512.90
7.3.310.0000.00816.04
7.3.300.0000.00716.25
7.3.290.0030.00316.25
7.3.280.0030.01216.18
7.3.260.0090.01116.29
7.3.240.0090.01116.26
7.3.230.0070.01516.41
7.3.210.0030.01316.59
7.3.200.0060.00916.37
7.3.190.0100.00616.36
7.3.180.0060.01216.42
7.3.170.0130.00916.32
7.3.160.0030.01316.30
7.3.10.0100.00016.52
7.3.00.0100.00316.80
7.2.330.0090.00916.46
7.2.320.0060.01316.61
7.2.310.0100.00616.44
7.2.300.0100.00716.67
7.2.290.0130.00316.48
7.2.130.0080.00417.09
7.2.120.0040.01116.93
7.2.110.0130.00715.68
7.2.100.0160.00515.59
7.2.90.0100.01115.78
7.2.80.0130.00815.80
7.2.70.0090.00516.05
7.2.60.0210.00516.02
7.2.50.0150.00715.64
7.2.40.0350.01015.92
7.2.30.0180.00716.05
7.2.20.0080.00815.98
7.2.10.0100.01015.91
7.2.00.0160.00515.84
7.1.250.0000.01415.74
7.1.230.0220.00313.45
7.1.220.0250.00813.56
7.1.210.0110.00413.49
7.1.200.0210.00713.50
7.1.190.0270.00613.91
7.1.180.0120.00613.47
7.1.170.0170.01013.60
7.1.160.0240.00313.61
7.1.150.0190.00913.44
7.1.140.0170.00313.65
7.1.130.0220.00613.68
7.1.120.0170.00613.59
7.1.110.0180.00913.68
7.1.100.0240.00013.64
7.1.90.0180.00313.59
7.1.80.0090.01213.44
7.1.70.0160.01213.77
7.1.60.0440.00331.54
7.1.50.0390.00631.58
7.1.40.0390.00731.75
7.1.30.0310.01031.65
7.1.20.0500.00731.67
7.1.10.0160.01013.63
7.1.00.0180.00313.73
7.0.310.0110.00713.27
7.0.300.0140.00713.20
7.0.290.0260.00313.30
7.0.280.0150.00713.29
7.0.270.0260.01113.54
7.0.260.0240.00513.53
7.0.250.0310.00613.54
7.0.240.0130.00513.32
7.0.230.0200.00013.40
7.0.220.0240.00313.37
7.0.210.0200.00313.43
7.0.200.0160.01013.39
7.0.190.0230.00313.37
7.0.180.0180.00413.31
7.0.170.0230.01313.46
7.0.160.0170.00613.52
7.0.150.0220.00313.19
7.0.140.0230.00613.53
7.0.130.0230.00713.16
7.0.120.0300.00713.65
7.0.110.0520.00713.51
7.0.100.0310.00413.54
7.0.90.0320.00313.26
7.0.80.0260.00413.56
7.0.70.0290.00413.52
7.0.60.0230.00413.36
7.0.50.0200.00713.26
7.0.40.0170.01113.62
7.0.30.0310.00013.39
7.0.20.0240.00913.59
7.0.10.0230.00913.57
7.0.00.0220.00913.59
5.6.380.0070.00513.96
5.6.370.0150.00414.18
5.6.360.0090.00914.27
5.6.350.0160.00214.54
5.6.340.0090.01314.05
5.6.330.0130.00814.20
5.6.320.0170.00314.49
5.6.310.0160.00514.13
5.6.300.0080.01214.57
5.6.290.0100.01014.06
5.6.280.0110.01114.30
5.6.270.0030.02014.18
5.6.260.0100.00714.11
5.6.250.0190.00014.22
5.6.240.0160.00414.57
5.6.230.0110.00914.35
5.6.220.0180.00414.20
5.6.210.0120.01214.13
5.6.200.0130.01014.18
5.6.190.0150.00614.36
5.6.180.0080.01014.28
5.6.170.0110.01114.37
5.6.160.0080.01114.34
5.6.150.0090.01214.14
5.6.140.0080.01214.33
5.6.130.0120.00814.27
5.6.120.0110.01414.38
5.6.110.0110.00714.22
5.6.100.0120.00714.21
5.6.90.0100.01014.53
5.6.80.0150.00614.14
5.6.70.0120.00814.23
5.6.60.0080.01114.17
5.6.50.0120.00813.95
5.6.40.0140.00714.21
5.6.30.0120.00814.12
5.6.20.0130.00914.36
5.6.10.0090.01013.90
5.6.00.0070.01414.23
5.5.380.0130.00310.72
5.5.370.0140.00311.04
5.5.360.0150.00010.90
5.5.350.0080.00810.92
5.5.340.0100.00811.33
5.5.330.0090.00310.70
5.5.320.0130.00011.03
5.5.310.0120.00410.91
5.5.300.0180.00011.16
5.5.290.0070.00710.99
5.5.280.0180.00011.21
5.5.270.0080.00511.11
5.5.260.0140.00411.14
5.5.250.0130.00310.73
5.5.240.0100.00710.95
5.5.230.0060.00611.09
5.5.220.0130.00011.07
5.5.210.0120.00411.24
5.5.200.0090.00510.95
5.5.190.0120.00310.93
5.5.180.0120.00610.78
5.5.170.0120.00714.01
5.5.160.0120.00010.75
5.5.150.0060.01110.89
5.5.140.0140.00311.23
5.5.130.0120.00311.12
5.5.120.0150.00210.99
5.5.110.0070.00710.97
5.5.100.0100.00510.79
5.5.90.0090.00310.91
5.5.80.0060.00611.08
5.5.70.0110.00311.08
5.5.60.0150.00011.16
5.5.50.0100.00511.09
5.5.40.0110.00411.07
5.5.30.0090.00310.83
5.5.20.0080.00411.04
5.5.10.0150.00010.77
5.5.00.0080.00411.03
5.4.450.0090.00311.10
5.4.440.0130.00010.82
5.4.430.0080.00610.93
5.4.420.0140.00310.90
5.4.410.0160.00410.80
5.4.400.0110.00310.95
5.4.390.0130.00310.96
5.4.380.0070.00710.88
5.4.370.0100.00510.81
5.4.360.0060.01210.95
5.4.350.0070.01011.07
5.4.340.0040.01210.77
5.4.330.0130.00310.94
5.4.320.0130.00010.76
5.4.310.0150.00310.61
5.4.300.0100.00510.92
5.4.290.0150.00010.88
5.4.280.0060.00610.64
5.4.270.0160.00010.72
5.4.260.0100.00511.13
5.4.250.0080.00810.84
5.4.240.0090.00510.73
5.4.230.0080.00810.88
5.4.220.0110.00410.96
5.4.210.0090.00610.82
5.4.200.0070.00810.98
5.4.190.0150.00010.72
5.4.180.0140.00410.77
5.4.170.0080.00710.85
5.4.160.0080.00810.81
5.4.150.0100.00510.57
5.4.140.0110.00310.86
5.4.130.0120.00311.08
5.4.120.0040.00910.84
5.4.110.0090.00610.89
5.4.100.0070.00710.98
5.4.90.0120.00710.90
5.4.80.0090.00511.02
5.4.70.0070.00710.74
5.4.60.0120.00010.68
5.4.50.0060.00910.73
5.4.40.0040.00810.79
5.4.30.0070.00510.54
5.4.20.0080.00511.07
5.4.10.0100.00310.74
5.4.00.0120.00010.90
5.3.290.0140.00010.61
5.3.280.0060.00610.40
5.3.270.0060.00910.57
5.3.260.0090.00410.44
5.3.250.0100.00410.53
5.3.240.0080.00610.41
5.3.230.0040.00910.35
5.3.220.0110.00410.31
5.3.210.0060.00610.06
5.3.200.0100.00210.16
5.3.190.0120.00010.22
5.3.180.0040.00810.42
5.3.170.0120.00310.45
5.3.160.0050.01010.44
5.3.150.0100.00310.36
5.3.140.0040.00810.25
5.3.130.0110.00310.30
5.3.120.0110.00310.38
5.3.110.0090.00510.35
5.3.100.0070.00710.24
5.3.90.0080.00610.46
5.3.80.0060.00610.29
5.3.70.0060.00610.23
5.3.60.0060.00610.25
5.3.50.0140.00010.25
5.3.40.0000.01110.24
5.3.30.0090.00310.21
5.3.20.0130.00010.30
5.3.10.0050.00910.06
5.3.00.0100.0039.89
5.2.170.0040.0089.49
5.2.160.0080.0049.53
5.2.150.0060.0069.51
5.2.140.0100.0029.40
5.2.130.0040.0119.25
5.2.120.0130.0009.36
5.2.110.0110.0039.32
5.2.100.0040.0089.50
5.2.90.0030.0069.38
5.2.80.0040.0089.27
5.2.70.0090.0009.12
5.2.60.0060.0039.23
5.2.50.0080.0049.33
5.2.40.0080.0049.28
5.2.30.0090.0039.35
5.2.20.0040.0079.22
5.2.10.0060.0039.10
5.2.00.0050.0039.11
5.1.60.0070.0038.50
5.1.50.0070.0048.45
5.1.40.0050.0048.63
5.1.30.0000.0098.68
5.1.20.0120.0038.51
5.1.10.0100.0008.66
5.1.00.0100.0008.24
5.0.50.0070.0008.24
5.0.40.0020.0048.24
5.0.30.0040.0038.24
5.0.20.0060.0008.24
5.0.10.0030.0038.24
5.0.00.0030.0038.24
4.4.90.0050.0058.24
4.4.80.0060.0028.24
4.4.70.0020.0048.24
4.4.60.0000.0068.24
4.4.50.0000.0058.24
4.4.40.0070.0008.24
4.4.30.0020.0058.24
4.4.20.0050.0028.24
4.4.10.0080.0008.24
4.4.00.0060.0008.24
4.3.110.0000.0078.24
4.3.100.0000.0058.24
4.3.90.0050.0008.24
4.3.80.0000.0078.24
4.3.70.0020.0028.24
4.3.60.0000.0058.24
4.3.50.0070.0008.24
4.3.40.0060.0008.24
4.3.30.0040.0028.24
4.3.20.0000.0078.24
4.3.10.0000.0058.24
4.3.00.0030.0058.24

preferences:
33.87 ms | 400 KiB | 5 Q