3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new stdClass(); $a->lead = stdClass(); $a->lead->name = 'cool'; if(isset($a->lead->name)){ echo '1'; } if(isset($a->lead->referral)){ echo '2'; }

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)
8.3.40.0070.01118.71
8.3.30.0140.00019.13
8.3.20.0000.00820.18
8.3.10.0130.00323.51
8.3.00.0040.00419.26
8.2.170.0000.01422.96
8.2.160.0160.00320.39
8.2.150.0030.01224.18
8.2.140.0080.00024.66
8.2.130.0080.00826.16
8.2.120.0080.00022.27
8.2.110.0030.00622.07
8.2.100.0080.00417.50
8.2.90.0040.00419.14
8.2.80.0050.00317.97
8.2.70.0040.00417.63
8.2.60.0040.00417.92
8.2.50.0050.00518.07
8.2.40.0060.00319.74
8.2.30.0050.00218.00
8.2.20.0040.00417.67
8.2.10.0000.00718.04
8.2.00.0000.00817.73
8.1.270.0040.00422.02
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.98
8.1.230.0110.00017.42
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0000.00817.22
8.1.180.0050.00318.10
8.1.170.0050.00318.32
8.1.160.0000.00821.95
8.1.150.0030.00618.68
8.1.140.0070.00017.35
8.1.130.0070.00017.69
8.1.120.0040.00417.46
8.1.110.0030.00617.33
8.1.100.0050.00317.31
8.1.90.0040.00317.27
8.1.80.0040.00417.30
8.1.70.0030.00317.31
8.1.60.0030.00617.54
8.1.50.0030.00517.45
8.1.40.0000.00817.41
8.1.30.0060.00317.47
8.1.20.0040.00417.66
8.1.10.0040.00417.48
8.1.00.0020.00517.55
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0070.00018.30
8.0.270.0000.00717.10
8.0.260.0000.00817.19
8.0.250.0030.00516.96
8.0.240.0000.00617.01
8.0.230.0000.00716.86
8.0.220.0000.00716.87
8.0.210.0000.00716.78
8.0.200.0030.00316.91
8.0.190.0080.00016.93
8.0.180.0000.00716.81
8.0.170.0000.00716.84
8.0.160.0030.00316.86
8.0.150.0050.00216.72
8.0.140.0000.00816.75
8.0.130.0040.00413.34
8.0.120.0030.00516.86
8.0.110.0040.00416.80
8.0.100.0040.00316.82
8.0.90.0040.00416.93
8.0.80.0130.00316.86
8.0.70.0030.00516.95
8.0.60.0040.00416.80
8.0.50.0000.00716.84
8.0.30.0120.01016.98
8.0.20.0030.01517.40
8.0.10.0040.00416.90
8.0.00.0090.01116.75
7.4.330.0000.00515.02
7.4.320.0030.00316.53
7.4.300.0000.00616.48
7.4.290.0070.00016.52
7.4.280.0070.00416.57
7.4.270.0000.00816.59
7.4.260.0040.00416.56
7.4.250.0040.00416.36
7.4.240.0020.00516.51
7.4.230.0030.00316.32
7.4.220.0180.00916.64
7.4.210.0100.01316.47
7.4.200.0070.00016.41
7.4.160.0100.00616.34
7.4.150.0200.00717.40
7.4.140.0110.00917.86
7.4.130.0050.01216.52
7.4.120.0130.00716.50
7.4.110.0030.01316.42
7.4.100.0070.01416.41
7.4.90.0070.01716.56
7.4.80.0060.01219.39
7.4.70.0100.00616.57
7.4.60.0060.00916.62
7.4.50.0030.00516.57
7.4.40.0100.01016.61
7.4.30.0130.00416.67
7.4.10.0120.00614.80
7.4.00.0020.01114.95
7.3.330.0030.00313.01
7.3.320.0050.00013.21
7.3.310.0030.00316.35
7.3.300.0000.00716.24
7.3.290.0060.01016.25
7.3.280.0090.00916.23
7.3.270.0100.01017.40
7.3.260.0130.00716.42
7.3.250.0110.00616.42
7.3.240.0150.00316.21
7.3.230.0060.01616.39
7.3.210.0000.01616.44
7.3.200.0090.00919.39
7.3.190.0090.01216.27
7.3.180.0030.01316.40
7.3.170.0090.00616.32
7.3.160.0080.00816.21
7.3.130.0040.01514.57
7.3.120.0000.01714.71
7.3.110.0090.00614.71
7.3.100.0000.01414.76
7.3.90.0040.01114.68
7.3.80.0000.00914.61
7.3.70.0060.00914.94
7.3.60.0070.00714.71
7.3.50.0100.00714.83
7.3.40.0030.00914.50
7.3.30.0090.00014.64
7.3.20.0000.01616.54
7.3.10.0070.00616.36
7.3.00.0080.00316.45
7.2.330.0130.00316.66
7.2.320.0120.00616.70
7.2.310.0070.01016.45
7.2.300.0070.01016.52
7.2.290.0100.01316.61
7.2.260.0060.01214.81
7.2.250.0120.00414.86
7.2.240.0040.01114.95
7.2.230.0080.01215.21
7.2.220.0120.00315.23
7.2.210.0100.00614.68
7.2.200.0040.00815.05
7.2.190.0000.01315.04
7.2.180.0070.01015.13
7.2.170.0070.00314.87
7.2.160.0000.01014.70
7.2.150.0060.00616.54
7.2.140.0100.00716.78
7.2.130.0030.01016.66
7.2.120.0070.00716.92
7.2.110.0050.00716.81
7.2.100.0130.00216.70
7.2.90.0060.01216.87
7.2.80.0030.01116.96
7.2.70.0080.00516.83
7.2.60.0060.00816.62
7.2.50.0060.00716.78
7.2.40.0050.01016.77
7.2.30.0080.00316.98
7.2.20.0020.01416.65
7.2.10.0040.00916.80
7.2.00.0070.00417.62
7.1.330.0000.01415.47
7.1.320.0080.00415.89
7.1.310.0080.00315.52
7.1.300.0030.01415.50
7.1.290.0030.00715.72
7.1.280.0030.01215.37
7.1.270.0100.00315.72
7.1.260.0070.00315.79
7.1.250.0040.00715.50
7.1.240.0040.00815.82
7.1.230.0040.00415.71
7.1.220.0070.00715.58
7.1.210.0030.01315.68
7.1.200.0000.01615.61
7.1.190.0000.01215.71
7.1.180.0070.00715.73
7.1.170.0000.01315.39
7.1.160.0040.00415.77
7.1.150.0040.00715.59
7.1.140.0030.00815.76
7.1.130.0060.01015.67
7.1.120.0030.01315.31
7.1.110.0030.00515.66
7.1.100.0050.00716.72
7.1.90.0080.00415.55
7.1.80.0060.00615.71
7.1.70.0080.00616.16
7.1.60.0070.01017.37
7.1.50.0110.00516.25
7.1.40.0000.01415.47
7.1.30.0060.00915.66
7.1.20.0100.00615.64
7.1.10.0100.00715.76
7.1.00.0080.04018.87
7.0.330.0060.00614.93
7.0.320.0000.01215.25
7.0.310.0140.00415.31
7.0.300.0040.01115.26
7.0.290.0000.01315.04
7.0.280.0030.01015.27
7.0.270.0070.00715.21
7.0.260.0030.00715.46
7.0.250.0040.01215.23
7.0.240.0090.00615.43
7.0.230.0000.00815.37
7.0.220.0030.00515.34
7.0.210.0070.00715.25
7.0.200.0070.00516.07
7.0.190.0000.01015.10
7.0.180.0060.00915.32
7.0.170.0040.00715.30
7.0.160.0040.01115.41
7.0.150.0070.00715.31
7.0.140.0090.03618.66
7.0.130.0040.00815.47
7.0.120.0030.00915.28
7.0.110.0100.00315.44
7.0.100.0070.01015.33
7.0.90.0030.01015.36
7.0.80.0080.00715.19
7.0.70.0040.01115.22
7.0.60.0090.04417.66
7.0.50.0050.04716.52
7.0.40.0060.02316.81
7.0.30.0100.04416.77
7.0.20.0100.03416.81
7.0.10.0070.03716.79
7.0.00.0100.02916.55
5.6.400.0030.01414.56
5.6.390.0060.00614.21
5.6.380.0070.00714.39
5.6.370.0090.00614.12
5.6.360.0040.00414.38
5.6.350.0080.00014.13
5.6.340.0090.00014.15
5.6.330.0040.00814.22
5.6.320.0070.00313.92
5.6.310.0100.00014.14
5.6.300.0040.00714.35
5.6.290.0000.01614.04
5.6.280.0050.04017.77
5.6.270.0050.00614.23
5.6.260.0140.00014.38
5.6.250.0060.00914.18
5.6.240.0130.00314.09
5.6.230.0100.00014.15
5.6.220.0040.00414.29
5.6.210.0030.03617.45
5.6.200.0100.03016.16
5.6.190.0090.04617.47
5.6.180.0220.02617.30
5.6.170.0130.04317.28
5.6.160.0020.04717.48
5.6.150.0050.02816.45
5.6.140.0030.02516.13
5.6.130.0030.04516.10
5.6.120.0070.04217.69
5.6.110.0000.05117.64
5.6.100.0080.04417.54
5.6.90.0020.04717.56
5.6.80.0050.03517.36
5.6.70.0070.00714.30
5.6.60.0050.00514.18
5.6.50.0080.00414.35
5.6.40.0000.01414.14
5.6.30.0100.01014.16
5.6.20.0120.00014.31
5.6.10.0000.01214.05
5.6.00.0120.00314.17
5.5.380.0070.00414.13
5.5.370.0060.00613.87
5.5.360.0100.00614.36
5.5.350.1930.02717.14
5.5.340.0100.04016.10
5.5.330.0070.03717.27
5.5.320.0070.03017.17
5.5.310.0210.03917.19
5.5.300.0080.04115.93
5.5.290.0020.02716.15
5.5.280.0070.04817.62
5.5.270.0050.02117.62
5.5.260.0050.02717.27
5.5.250.0080.03417.33
5.5.240.0100.04217.20
5.5.230.0030.00714.14
5.5.220.0060.00313.88
5.5.210.0030.01014.05
5.5.200.0000.01213.88
5.5.190.0040.01113.91
5.5.180.0070.00414.18
5.5.170.0040.00814.06
5.5.160.0030.01014.23
5.5.150.0090.00614.09
5.5.140.0050.00514.31
5.5.130.0030.01014.01
5.5.120.0030.01314.26
5.5.110.0110.00013.98
5.5.100.0060.00314.23
5.5.90.0080.00413.76
5.5.80.0090.00314.22
5.5.70.0120.00314.22
5.5.60.0040.00814.30
5.5.50.0070.00714.07
5.5.40.0040.00814.29
5.5.30.0030.01114.16
5.5.20.0060.01014.25
5.5.10.0040.01113.97
5.5.00.0070.00313.95
5.4.450.0220.02515.77
5.4.440.0260.03215.85
5.4.430.0150.02715.63
5.4.420.0170.02415.85
5.4.410.0170.02415.69
5.4.400.0150.02515.52
5.4.390.0170.02215.59
5.4.380.0170.02215.59
5.4.370.0200.02015.68
5.4.360.0230.02215.63
5.4.350.0180.02115.60
5.4.340.0180.02015.61
5.4.330.0030.00912.13
5.4.320.0230.03715.69
5.4.310.0250.03515.60
5.4.300.0270.02015.45
5.4.290.0310.03315.53
5.4.280.0250.02215.60
5.4.270.0170.03015.46
5.4.260.0250.03015.63
5.4.250.0240.02815.63
5.4.240.0250.02515.45
5.4.230.0250.03515.53
5.4.220.0220.03215.50
5.4.210.0290.02715.60
5.4.200.0220.02015.60
5.4.190.0270.03715.68
5.4.180.0300.02715.68
5.4.170.0280.03015.59
5.4.160.0280.03515.60
5.4.150.0350.03115.66
5.4.140.0230.03014.24
5.4.130.0270.02414.19
5.4.120.0270.03214.19
5.4.110.0220.03414.20
5.4.100.0300.02714.17
5.4.90.0280.03214.18
5.4.80.0300.02014.27
5.4.70.0310.03014.22
5.4.60.0250.03014.28
5.4.50.0250.01714.22
5.4.40.0230.01614.29
5.4.30.0220.01814.27
5.4.20.0240.01914.26
5.4.10.0200.02814.15
5.4.00.0250.02513.88
5.3.290.0530.05714.50
5.3.280.0470.04314.54
5.3.270.0370.05014.51
5.3.260.0500.06314.48
5.3.250.0470.03714.45
5.3.240.0430.03314.55
5.3.230.0400.04314.43
5.3.220.0430.03714.54
5.3.210.0530.06714.66
5.3.200.0430.03714.41
5.3.190.0530.05314.66
5.3.180.0430.07314.46
5.3.170.0430.07014.45
5.3.160.0500.04714.50
5.3.150.0470.05314.54
5.3.140.0430.03014.45
5.3.130.0670.04014.48
5.3.120.0500.03714.39
5.3.110.0500.04314.40
5.3.100.0370.04713.91
5.3.90.0570.06013.89
5.3.80.0500.06013.96
5.3.70.0430.05013.85
5.3.60.0470.05313.96
5.3.50.0370.04013.79
5.3.40.0370.03713.82
5.3.30.0400.03713.71
5.3.20.0430.04313.59
5.3.10.0500.05713.43
5.3.00.0500.06013.50
5.2.170.0270.06311.08
5.2.160.0370.03711.00
5.2.150.0300.03311.05
5.2.140.0470.05011.15
5.2.130.0500.04711.19
5.2.120.0470.05311.15
5.2.110.0400.03011.25
5.2.100.0300.03311.13
5.2.90.0370.03010.95
5.2.80.0400.05711.11
5.2.70.0400.03311.14
5.2.60.0500.03310.89
5.2.50.0430.05711.02
5.2.40.0430.04710.85
5.2.30.0330.05311.03
5.2.20.0370.05311.05
5.2.10.0300.04010.77
5.2.00.0270.03310.57
5.1.60.0330.0239.89
5.1.50.0270.0309.96
5.1.40.0370.0439.93
5.1.30.0400.04710.36
5.1.20.0330.02310.39
5.1.10.0370.04010.14
5.1.00.0330.04710.04
5.0.50.0170.0408.70
5.0.40.0130.0308.38
5.0.30.0100.0338.12
5.0.20.0170.0178.11
5.0.10.0170.0378.25
5.0.00.0200.0478.27
4.4.90.0230.0237.42
4.4.80.0170.0137.42
4.4.70.0230.0177.42
4.4.60.0130.0237.42
4.4.50.0170.0207.42
4.4.40.0230.0407.42
4.4.30.0130.0177.42
4.4.20.0200.0307.42
4.4.10.0230.0207.42
4.4.00.0130.0307.42
4.3.110.0170.0177.42
4.3.100.0130.0207.42
4.3.90.0200.0337.42
4.3.80.0100.0307.42
4.3.70.0100.0207.42
4.3.60.0200.0207.42
4.3.50.0200.0207.42
4.3.40.0230.0407.42
4.3.30.0070.0177.42
4.3.20.0100.0177.42
4.3.10.0030.0277.42
4.3.00.0100.0207.42

preferences:
44.86 ms | 400 KiB | 5 Q