3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new stdClass(); $a->lead = new stdClass(); $a->lead->name = 'cool'; if(isset($a->lead->name)){ echo '1'; } if($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)
8.3.60.0160.00018.55
8.3.50.0140.01016.45
8.3.40.0120.00618.83
8.3.30.0130.00719.09
8.3.20.0070.00720.34
8.3.10.0070.00723.40
8.3.00.0080.00019.38
8.2.180.0150.00018.55
8.2.170.0110.00722.96
8.2.160.0100.00320.43
8.2.150.0080.00024.18
8.2.140.0070.01124.66
8.2.130.0120.00326.16
8.2.120.0040.00422.04
8.2.110.0000.00819.14
8.2.100.0080.00417.75
8.2.90.0060.00319.29
8.2.80.0030.00617.97
8.2.70.0050.00317.63
8.2.60.0000.00817.79
8.2.50.0050.00318.07
8.2.40.0060.00319.88
8.2.30.0040.00418.12
8.2.20.0040.00417.67
8.2.10.0040.00418.11
8.2.00.0060.00317.66
8.1.280.0090.00625.92
8.1.270.0060.00322.06
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0140.00723.92
8.1.230.0030.00917.42
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0090.00017.23
8.1.190.0000.00817.10
8.1.180.0080.00018.10
8.1.170.0030.00518.50
8.1.160.0030.00622.06
8.1.150.0040.00418.73
8.1.140.0040.00417.33
8.1.130.0070.00017.77
8.1.120.0000.00717.45
8.1.110.0040.00417.39
8.1.100.0080.00017.37
8.1.90.0000.00717.33
8.1.80.0000.00817.25
8.1.70.0000.00617.34
8.1.60.0040.00417.48
8.1.50.0040.00417.34
8.1.40.0040.00417.43
8.1.30.0040.00417.61
8.1.20.0000.00817.48
8.1.10.0000.00717.45
8.1.00.0040.00417.41
8.0.300.0040.00418.77
8.0.290.0070.00016.75
8.0.280.0000.00718.44
8.0.270.0030.00517.20
8.0.260.0080.00017.30
8.0.250.0070.00016.91
8.0.240.0060.00016.94
8.0.230.0070.00016.82
8.0.220.0000.00716.88
8.0.210.0040.00416.84
8.0.200.0030.00316.97
8.0.190.0040.00416.91
8.0.180.0040.00416.84
8.0.170.0050.00216.98
8.0.160.0000.00816.88
8.0.150.0040.00416.73
8.0.140.0000.00816.86
8.0.130.0050.00313.25
8.0.120.0000.01016.92
8.0.110.0040.00416.83
8.0.100.0070.00016.86
8.0.90.0040.00416.94
8.0.80.0030.01816.87
8.0.70.0050.00216.77
8.0.60.0000.00716.79
8.0.50.0040.00416.91
8.0.30.0060.01617.11
8.0.20.0070.01517.40
8.0.10.0040.00416.81
8.0.00.0100.01116.79
7.4.330.0020.00215.08
7.4.320.0040.00416.64
7.4.300.0030.00316.51
7.4.290.0000.00716.39
7.4.280.0000.00816.45
7.4.270.0000.00716.57
7.4.260.0000.00716.57
7.4.250.0000.00716.45
7.4.240.0050.00216.43
7.4.230.0030.00316.44
7.4.220.0080.01816.54
7.4.210.0100.00716.46
7.4.200.0000.00716.70
7.4.160.0030.01416.54
7.4.150.0180.00417.40
7.4.140.0100.01017.86
7.4.130.0110.00816.46
7.4.120.0090.00916.53
7.4.110.0060.01216.44
7.4.100.0070.01016.42
7.4.90.0070.01016.34
7.4.80.0040.01519.39
7.4.70.0060.01016.50
7.4.60.0100.00716.40
7.4.50.0080.00016.39
7.4.40.0090.00616.46
7.4.30.0080.00816.52
7.4.10.0110.00315.24
7.4.00.0150.00314.86
7.3.330.0060.00013.25
7.3.320.0020.00313.14
7.3.310.0030.00616.36
7.3.300.0060.00016.23
7.3.290.0070.01016.26
7.3.280.0080.00716.29
7.3.270.0140.00317.40
7.3.260.0130.00316.37
7.3.250.0130.00516.36
7.3.240.0130.00716.30
7.3.230.0030.01316.39
7.3.210.0060.01116.58
7.3.200.0120.00619.39
7.3.190.0080.00916.31
7.3.180.0070.01016.57
7.3.170.0080.00816.36
7.3.160.0080.00816.32
7.3.130.0030.01314.78
7.3.120.0110.00415.00
7.3.110.0090.00614.84
7.3.100.0090.00314.87
7.3.90.0030.01014.84
7.3.80.0000.01514.64
7.3.70.0100.00314.85
7.3.60.0030.01014.86
7.3.50.0090.00614.59
7.3.40.0070.00714.63
7.3.30.0070.00714.84
7.3.20.0000.01416.71
7.3.10.0100.00416.40
7.3.00.0100.00616.49
7.2.330.0030.01316.63
7.2.320.0070.01416.49
7.2.310.0060.00916.34
7.2.300.0090.00616.65
7.2.290.0070.01016.82
7.2.260.0090.00915.05
7.2.250.0100.01015.23
7.2.240.0140.00415.12
7.2.230.0140.00015.05
7.2.220.0060.01015.04
7.2.210.0000.01714.63
7.2.200.0090.00915.00
7.2.190.0110.00015.08
7.2.180.0070.01015.05
7.2.170.0090.00615.10
7.2.160.0040.00814.88
7.2.150.0030.01016.56
7.2.140.0040.01416.66
7.2.130.0110.00916.73
7.2.120.0070.01016.73
7.2.110.0060.01016.48
7.2.100.0060.01116.76
7.2.90.0080.01016.83
7.2.80.0070.01116.86
7.2.70.0100.00716.84
7.2.60.0070.00916.64
7.2.50.0070.00816.83
7.2.40.0100.00816.75
7.2.30.0060.01016.76
7.2.20.0020.01316.64
7.2.10.0060.00816.73
7.2.00.0040.00917.28
7.1.330.0040.00715.53
7.1.320.0070.00315.80
7.1.310.0070.01015.65
7.1.300.0080.00415.80
7.1.290.0000.01515.59
7.1.280.0040.00815.82
7.1.270.0030.00915.83
7.1.260.0040.00415.52
7.1.250.0070.00715.52
7.1.240.0110.00815.71
7.1.230.0080.01215.50
7.1.220.0110.00615.67
7.1.210.0140.00415.68
7.1.200.0090.01115.51
7.1.190.0080.00715.60
7.1.180.0120.00615.68
7.1.170.0080.01015.61
7.1.160.0140.00415.51
7.1.150.0060.00815.36
7.1.140.0050.00815.74
7.1.130.0060.00815.59
7.1.120.0050.00915.63
7.1.110.0070.00815.57
7.1.100.0070.00716.49
7.1.90.0070.01015.65
7.1.80.0130.00215.55
7.1.70.0090.00416.13
7.1.60.0060.00916.80
7.1.50.0080.01116.02
7.1.40.0030.01015.66
7.1.30.0070.00515.61
7.1.20.0060.00915.77
7.1.10.0030.00915.52
7.1.00.0050.03117.85
7.0.330.0100.00615.25
7.0.320.0100.00515.04
7.0.310.0070.00915.40
7.0.300.0050.01215.20
7.0.290.0080.00715.27
7.0.280.0090.00714.99
7.0.270.0090.00315.26
7.0.260.0100.00715.15
7.0.250.0020.01415.33
7.0.240.0070.00815.38
7.0.230.0060.00615.21
7.0.220.0060.00815.14
7.0.210.0080.00615.21
7.0.200.0040.00715.73
7.0.190.0110.00515.23
7.0.180.0050.00915.42
7.0.170.0080.00515.29
7.0.160.0040.01115.22
7.0.150.0070.00515.35
7.0.140.0030.02817.59
7.0.130.0080.00415.25
7.0.120.0060.00515.31
7.0.110.0080.00715.16
7.0.100.0050.01015.08
7.0.90.0090.00515.37
7.0.80.0050.00915.18
7.0.70.0030.00915.32
7.0.60.0060.03016.91
7.0.50.0070.03016.24
7.0.40.0030.02515.41
7.0.30.0160.01815.60
7.0.20.0090.01815.60
7.0.10.0030.03615.65
7.0.00.0020.03615.46
5.6.400.0000.01514.61
5.6.390.0050.00514.46
5.6.380.0050.00714.34
5.6.370.0080.00814.50
5.6.360.0120.00514.35
5.6.350.0060.00914.35
5.6.340.0090.00514.27
5.6.330.0060.00814.47
5.6.320.0040.00914.35
5.6.310.0020.01214.33
5.6.300.0050.00514.41
5.6.290.0060.00514.37
5.6.280.0070.02716.50
5.6.270.0030.00614.44
5.6.260.0030.01214.25
5.6.250.0060.00914.45
5.6.240.0050.00914.38
5.6.230.0090.00514.29
5.6.220.0050.01014.29
5.6.210.0070.02916.34
5.6.200.0050.01815.58
5.6.190.0080.03216.36
5.6.180.0130.03416.20
5.6.170.0110.02916.35
5.6.160.0040.02416.36
5.6.150.0060.02415.56
5.6.140.0060.03115.61
5.6.130.0010.02815.64
5.6.120.0070.02316.52
5.6.110.0050.03716.53
5.6.100.0060.02316.51
5.6.90.0100.01916.59
5.6.80.0040.03316.24
5.6.70.1550.01216.33
5.6.60.0050.00914.19
5.6.50.0060.00614.11
5.6.40.0050.00814.05
5.6.30.0100.00214.06
5.6.20.0080.00514.28
5.6.10.0040.00914.17
5.6.00.0050.00414.07
5.5.380.0050.00712.41
5.5.370.0040.00712.70
5.5.360.0070.00512.83
5.5.350.0070.03415.14
5.5.340.0050.01814.42
5.5.330.0070.03115.28
5.5.320.0110.02315.25
5.5.310.0060.02015.35
5.5.300.0110.01814.29
5.5.290.0070.02314.58
5.5.280.0080.03015.38
5.5.270.0030.02715.47
5.5.260.0090.02915.41
5.5.250.0050.02315.15
5.5.240.0090.02914.86
5.5.230.0060.00412.63
5.5.220.0070.00712.63
5.5.210.0060.00312.68
5.5.200.0050.00512.44
5.5.190.0050.00812.58
5.5.180.0080.00412.38
5.5.170.0020.01212.42
5.5.160.0030.00512.53
5.5.150.0060.00612.21
5.5.140.0060.00512.62
5.5.130.0070.00212.72
5.5.120.0040.00812.71
5.5.110.0050.00712.49
5.5.100.0060.00512.50
5.5.90.0060.00812.37
5.5.80.0040.00612.60
5.5.70.0060.00612.41
5.5.60.0050.00712.51
5.5.50.0030.00812.50
5.5.40.0020.00912.65
5.5.30.0060.00612.26
5.5.20.0040.00612.58
5.5.10.0060.00712.26
5.5.00.0040.00612.52
5.4.450.0360.02213.76
5.4.440.0310.02613.84
5.4.430.0340.02413.81
5.4.420.0260.00213.71
5.4.410.0250.00213.75
5.4.400.0240.00413.64
5.4.390.0240.00413.60
5.4.380.0310.00313.51
5.4.370.0300.00513.58
5.4.360.0260.00313.57
5.4.350.0240.00313.53
5.4.340.0030.01911.23
5.4.330.0060.00511.16
5.4.320.0040.01711.22
5.4.310.0040.01711.28
5.4.300.0050.01711.37
5.4.290.0050.01711.49
5.4.280.0050.01811.39
5.4.270.0100.01411.23
5.4.260.0060.01511.31
5.4.250.0010.02011.41
5.4.240.0060.01511.20
5.4.230.0050.01711.32
5.4.220.0080.01411.53
5.4.210.0050.01411.38
5.4.200.0060.01911.32
5.4.190.0040.01611.22
5.4.180.0030.01711.40
5.4.170.0060.01411.40
5.4.160.0050.01711.33
5.4.150.0060.01911.35
5.4.140.0030.01811.39
5.4.130.0050.01611.36
5.4.120.0060.01511.24
5.4.110.0060.01411.14
5.4.100.0050.01511.10
5.4.90.0070.01311.38
5.4.80.0050.01511.31
5.4.70.0040.01711.15
5.4.60.0020.01711.30
5.4.50.0040.01711.30
5.4.40.0040.01511.36
5.4.30.0040.02011.28
5.4.20.0040.01511.38
5.4.10.0050.01611.39
5.4.00.0030.01811.24
5.3.290.0030.02411.71
5.3.280.0040.02311.61
5.3.270.0040.02411.51
5.3.260.0030.02611.66
5.3.250.0040.02611.70
5.3.240.0020.02211.56
5.3.230.0040.02211.55
5.3.220.0020.02411.51
5.3.210.0050.02311.47
5.3.200.0040.02111.54
5.3.190.0050.02111.46
5.3.180.0070.02511.60
5.3.170.0070.02011.64
5.3.160.0050.02111.52
5.3.150.0070.02111.49
5.3.140.0070.02011.58
5.3.130.0060.02211.58
5.3.120.0070.02311.58
5.3.110.0040.02711.48
5.3.100.0070.02011.37
5.3.90.0060.02411.17
5.3.80.0070.02011.20
5.3.70.0030.02411.18
5.3.60.0070.02211.21
5.3.50.0040.02411.13
5.3.40.0060.01811.18
5.3.30.0050.01911.17
5.3.20.0050.02110.99
5.3.10.0060.02110.97
5.3.00.0040.02210.96
5.2.170.0050.0179.72
5.2.160.0060.0159.71
5.2.150.0020.0209.71
5.2.140.0040.0189.71
5.2.130.0060.0179.69
5.2.120.0040.0149.69
5.2.110.0040.0179.70
5.2.100.0050.0159.70
5.2.90.0050.0149.69
5.2.80.0020.0199.69
5.2.70.0030.0179.70
5.2.60.0030.0179.67
5.2.50.0040.0149.66
5.2.40.0020.0179.64
5.2.30.0040.0159.63
5.2.20.0030.0179.63
5.2.10.0060.0149.59
5.2.00.0050.0189.51
5.1.60.0020.0179.16
5.1.50.0020.0159.16
5.1.40.0030.0149.15
5.1.30.0020.0159.32
5.1.20.0060.0129.33
5.1.10.0040.0139.20
5.1.00.0020.0169.20
5.0.50.0040.0118.44
5.0.40.0040.0108.36
5.0.30.0030.0178.27
5.0.20.0020.0118.25
5.0.10.0020.0128.24
5.0.00.0050.0158.24
4.4.90.0030.0097.52
4.4.80.0020.0107.50
4.4.70.0020.0107.51
4.4.60.0030.0107.50
4.4.50.0010.0107.51
4.4.40.0010.0157.48
4.4.30.0010.0117.51
4.4.20.0040.0077.55
4.4.10.0030.0097.55
4.4.00.0020.0167.50
4.3.110.0010.0107.46
4.3.100.0050.0067.46
4.3.90.0030.0087.45
4.3.80.0010.0157.42
4.3.70.0040.0087.44
4.3.60.0020.0097.44
4.3.50.0010.0117.44
4.3.40.0040.0127.39
4.3.30.0000.0136.77
4.3.20.0040.0126.76
4.3.10.0030.0106.74
4.3.00.0080.0128.71

preferences:
49.9 ms | 400 KiB | 5 Q