3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 10; new stdClass($a); var_dump($a); // stdClass does not have a constructor; $a gets unset b/c it is nullified - how?

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)
8.3.60.0070.01118.18
8.3.50.0060.01321.99
8.3.40.0070.00718.73
8.3.30.0030.01020.29
8.3.20.0070.00020.34
8.3.10.0090.00021.93
8.3.00.0030.00622.52
8.2.180.0060.01216.63
8.2.170.0000.01522.96
8.2.160.0100.00322.26
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0080.00020.80
8.2.110.0080.00022.14
8.2.100.0060.00617.59
8.2.90.0040.00419.18
8.2.80.0040.00418.99
8.2.70.0080.00017.38
8.2.60.0060.00317.80
8.2.50.0030.00518.07
8.2.40.0090.00018.09
8.2.30.0070.00019.47
8.2.20.0050.00217.67
8.2.10.0000.00917.49
8.2.00.0050.00217.49
8.1.280.0170.00325.92
8.1.270.0000.00823.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0050.00523.97
8.1.230.0030.00719.17
8.1.220.0030.00517.74
8.1.210.0000.00818.77
8.1.200.0030.00617.36
8.1.190.0040.00417.18
8.1.180.0090.00018.10
8.1.170.0000.00818.59
8.1.160.0000.00718.82
8.1.150.0040.00418.67
8.1.140.0040.00417.44
8.1.130.0030.00317.89
8.1.120.0000.00817.37
8.1.110.0050.00217.27
8.1.100.0040.00417.45
8.1.90.0040.00417.30
8.1.80.0040.00417.38
8.1.70.0030.00317.35
8.1.60.0040.00417.41
8.1.50.0000.00717.44
8.1.40.0000.00717.41
8.1.30.0040.00417.54
8.1.20.0030.00617.54
8.1.10.0050.00317.61
8.1.00.0090.00317.46
8.0.300.0040.00418.77
8.0.290.0040.00416.77
8.0.280.0030.00318.44
8.0.270.0000.00817.18
8.0.260.0030.00316.72
8.0.250.0000.00716.86
8.0.240.0040.00716.89
8.0.230.0000.00716.81
8.0.220.0000.00816.72
8.0.210.0000.00816.84
8.0.200.0000.00616.93
8.0.190.0050.00316.78
8.0.180.0070.00016.84
8.0.170.0040.00416.80
8.0.160.0030.00316.78
8.0.150.0040.00416.67
8.0.140.0030.00316.77
8.0.130.0050.00013.25
8.0.120.0080.00016.74
8.0.110.0000.00716.87
8.0.100.0000.00716.65
8.0.90.0040.00416.64
8.0.80.0120.00916.83
8.0.70.0040.00416.67
8.0.60.0040.00416.66
8.0.50.0000.00716.71
8.0.30.0130.00516.76
8.0.20.0120.01017.40
8.0.10.0040.00416.90
8.0.00.0140.01016.52
7.4.330.0060.00016.71
7.4.320.0030.00316.39
7.4.300.0060.00016.53
7.4.290.0030.00316.53
7.4.280.0000.00716.43
7.4.270.0000.00716.37
7.4.260.0000.00513.22
7.4.250.0000.00816.40
7.4.240.0020.00516.47
7.4.230.0030.00316.53
7.4.220.0070.01416.62
7.4.210.0090.00716.52
7.4.200.0030.00316.62
7.4.190.0000.00716.67
7.4.160.0110.00716.29
7.4.150.0070.01017.40
7.4.140.0090.01117.86
7.4.130.0050.01216.38
7.4.120.0100.00916.47
7.4.110.0070.01016.44
7.4.100.0090.01516.32
7.4.90.0110.00616.42
7.4.80.0060.01119.39
7.4.70.0100.00716.36
7.4.60.0060.01016.52
7.4.50.0000.00816.33
7.4.40.0060.01022.77
7.4.30.0130.00816.46
7.4.00.0070.01114.53
7.3.330.0000.00512.93
7.3.320.0030.00312.98
7.3.310.0020.00516.19
7.3.300.0000.00716.13
7.3.290.0040.01616.16
7.3.280.0080.00916.11
7.3.270.0070.01017.40
7.3.260.0060.01216.33
7.3.250.0130.00716.29
7.3.240.0140.00316.37
7.3.230.0060.01116.39
7.3.210.0080.01116.07
7.3.200.0060.01019.39
7.3.190.0090.01216.44
7.3.180.0070.01016.25
7.3.170.0090.00616.39
7.3.160.0130.00316.46
7.3.120.0040.01114.91
7.3.10.0040.01216.34
7.3.00.0080.00616.57
7.2.330.0030.01316.32
7.2.320.0120.00616.63
7.2.310.0110.01116.49
7.2.300.0080.00816.43
7.2.290.0070.01016.48
7.2.130.0040.01216.52
7.2.120.0100.00316.59
7.2.110.0070.00916.72
7.2.100.0070.00716.55
7.2.90.0060.00916.54
7.2.80.0120.00616.35
7.2.70.0080.00816.75
7.2.60.0100.00516.71
7.2.50.0070.01016.59
7.2.40.0100.00616.43
7.2.30.0240.00716.60
7.2.20.0080.00816.68
7.2.10.0280.00516.46
7.2.00.0090.00717.47
7.1.250.0040.00415.89
7.1.230.0040.01215.49
7.1.220.0060.01315.60
7.1.210.0120.00615.26
7.1.200.0040.01115.72
7.1.190.0050.01015.59
7.1.180.0150.00315.55
7.1.170.0070.00715.73
7.1.160.0180.00015.43
7.1.150.0150.00415.85
7.1.140.0160.00315.46
7.1.130.0080.00815.66
7.1.120.0090.00615.53
7.1.110.0080.00415.77
7.1.100.0050.00916.71
7.1.90.0090.00915.64
7.1.80.0080.00815.65
7.1.70.0030.00916.37
7.1.60.0090.01517.58
7.1.50.0180.01025.34
7.1.40.0110.00815.56
7.1.30.0070.00715.50
7.1.20.0680.00915.97
7.1.10.0120.00015.77
7.1.00.0040.03419.05
7.0.310.0100.00514.90
7.0.300.0160.00915.28
7.0.290.0100.00715.41
7.0.280.0070.01115.38
7.0.270.0090.00415.31
7.0.260.0370.00315.21
7.0.250.0130.00315.27
7.0.240.0100.00515.12
7.0.230.0110.00215.32
7.0.220.0060.01215.32
7.0.210.0070.00715.41
7.0.200.0160.00515.70
7.0.190.0100.00715.37
7.0.180.0170.00315.26
7.0.170.0080.00315.39
7.0.160.0110.00715.25
7.0.150.0070.01015.29
7.0.140.0020.04418.72
7.0.130.0030.01315.20
7.0.120.0110.00415.07
7.0.110.0030.01415.09
7.0.100.0180.02317.50
7.0.90.0140.03717.56
7.0.80.0070.02517.63
7.0.70.0070.02317.46
7.0.60.0090.03317.60
7.0.50.0100.02217.76
7.0.40.0110.04016.76
7.0.30.0070.03016.77
7.0.20.0070.02516.78
7.0.10.0090.03316.70
7.0.00.0110.01816.75
5.6.380.0160.00014.37
5.6.370.0110.00513.97
5.6.360.0110.00714.17
5.6.350.0100.00314.41
5.6.340.0100.00514.41
5.6.330.0130.00314.28
5.6.320.0110.00714.64
5.6.310.0080.00414.10
5.6.300.0090.00614.51
5.6.290.0090.00314.20
5.6.280.0040.04017.64
5.6.270.0120.00314.25
5.6.260.0170.00014.57
5.6.250.0070.03117.55
5.6.240.0030.03517.28
5.6.230.0160.03717.36
5.6.220.0140.01317.38
5.6.210.0060.02917.40
5.6.200.0090.04017.75
5.6.190.0060.02617.63
5.6.180.0090.02017.57
5.6.170.0080.03817.65
5.6.160.0090.02617.63
5.6.150.0050.02817.70
5.6.140.0120.01917.53
5.6.130.0090.04617.58
5.6.120.0100.02317.69
5.6.110.0050.02517.46
5.6.100.0040.02517.70
5.6.90.0040.03517.66
5.6.80.0110.02617.31
5.6.70.0130.02317.40
5.6.60.0090.02917.19
5.6.50.0070.02317.32
5.6.40.0050.02317.35
5.6.30.0090.03517.35
5.6.20.0050.02317.28
5.6.10.0130.02017.29
5.6.00.0110.01817.32
5.5.380.0100.03716.60
5.5.370.0060.04416.56
5.5.360.0060.02216.67
5.5.350.0080.02216.56
5.5.340.0090.03016.83
5.5.330.0060.03616.79
5.5.320.0070.04116.79
5.5.310.0070.03316.78
5.5.300.0070.02516.84
5.5.290.0070.03516.85
5.5.280.0030.02616.77
5.5.270.0070.02716.79
5.5.260.0080.03616.82
5.5.250.0070.03216.70
5.5.240.0100.01716.40
5.5.230.0040.02916.52
5.5.220.0090.01916.49
5.5.210.0040.04416.54
5.5.200.0040.03816.48
5.5.190.0060.02016.53
5.5.180.0110.03016.43
5.5.170.0160.00014.25
5.5.160.0020.02416.48
5.5.150.0100.02116.51
5.5.140.0100.01716.44
5.5.130.0040.01916.49
5.5.120.0050.02316.45
5.5.110.0060.02016.45
5.5.100.0050.02316.47
5.5.90.0060.01816.42
5.5.80.0060.01716.43
5.5.70.0080.01816.46
5.5.60.0070.01916.46
5.5.50.0050.01716.42
5.5.40.0070.01816.42
5.5.30.0160.01216.41
5.5.20.0070.01816.43
5.5.10.0060.02016.43
5.5.00.0080.01816.44
5.4.450.0010.02616.12
5.4.440.0060.03016.05
5.4.430.0050.03516.03
5.4.420.0100.01516.11
5.4.410.0080.02516.01
5.4.400.0090.03515.90
5.4.390.0060.02515.88
5.4.380.0040.03915.95
5.4.370.0060.02715.89
5.4.360.0080.02915.80
5.4.350.0030.03615.87
5.4.340.0110.01715.97
5.4.330.0030.00812.79
5.4.320.0020.02415.93
5.4.310.0050.02215.87
5.4.300.0020.02215.95
5.4.290.0100.01515.95
5.4.280.0080.01515.84
5.4.270.0080.01815.94
5.4.260.0080.01615.80
5.4.250.0070.02315.87
5.4.240.0050.01815.84
5.4.230.0050.01815.91
5.4.220.0070.01816.01
5.4.210.0050.01915.94
5.4.200.0050.02615.94
5.4.190.0110.01515.96
5.4.180.0040.01915.93
5.4.170.0090.01615.84
5.4.160.0060.01615.79
5.4.150.0050.02015.93
5.4.140.0080.01314.59
5.4.130.0080.01514.45
5.4.120.0040.01814.54
5.4.110.0090.01614.53
5.4.100.0070.01814.58
5.4.90.0020.02014.58
5.4.80.0050.02014.52
5.4.70.0030.02014.55
5.4.60.0070.01714.59
5.4.50.0090.01414.57
5.4.40.0050.01814.58
5.4.30.0060.01914.50
5.4.20.0050.01714.59
5.4.10.0070.01714.54
5.4.00.0070.01814.25
5.3.290.0040.02113.73
5.3.280.0090.01713.64
5.3.270.0090.01513.67
5.3.260.0060.01613.67
5.3.250.0060.02013.66
5.3.240.0060.01713.70
5.3.230.0080.01713.62
5.3.220.0060.01713.61
5.3.210.0030.02113.67
5.3.200.0060.01713.61
5.3.190.0040.01913.65
5.3.180.0040.01913.67
5.3.170.0050.01713.67
5.3.160.0030.01813.59
5.3.150.0030.02613.61
5.3.140.0080.01513.66
5.3.130.0080.01513.63
5.3.120.0040.02013.66
5.3.110.0050.02013.59
5.3.100.0080.01513.41
5.3.90.0050.01713.39
5.3.80.0070.01513.39
5.3.70.0050.01813.37
5.3.60.0050.02013.39
5.3.50.0100.01513.36
5.3.40.0050.01813.35
5.3.30.0050.01813.33
5.3.20.0030.01813.23
5.3.10.0050.01813.19
5.3.00.0100.01513.14
5.2.170.0020.01712.70
5.2.160.0050.01312.70
5.2.150.0020.01912.70
5.2.140.0040.01412.70
5.2.130.0060.01312.70
5.2.120.0010.01612.70
5.2.110.0050.01412.70
5.2.100.0060.01412.70
5.2.90.0050.01412.70
5.2.80.0030.01312.70
5.2.70.0070.01412.70
5.2.60.0040.01512.70
5.2.50.0030.01812.70
5.2.40.0040.02212.70
5.2.30.0090.01112.70
5.2.20.0070.01212.70
5.2.10.0040.02712.70
5.2.00.0040.01312.70
5.1.60.0050.01312.70
5.1.50.0090.00712.70
5.1.40.0030.01312.70
5.1.30.0020.01512.70
5.1.20.0050.02312.70
5.1.10.0070.02012.70
5.1.00.0070.02012.70
5.0.50.0050.02012.70
5.0.40.0020.02612.70
5.0.30.0060.01312.70
5.0.20.0010.01112.70
5.0.10.0030.01012.70
5.0.00.0030.01812.70
4.4.90.0030.00812.70
4.4.80.0020.01012.70
4.4.70.0020.00912.70
4.4.60.0000.01112.70
4.4.50.0020.00812.70
4.4.40.0040.01012.70
4.4.30.0030.00912.70
4.4.20.0040.00612.70
4.4.10.0020.01112.70
4.4.00.0020.03112.70
4.3.110.0000.00912.70
4.3.100.0050.00612.70
4.3.90.0010.01112.70
4.3.80.0040.01312.70
4.3.70.0030.00812.70
4.3.60.0040.01712.70
4.3.50.0020.00812.70
4.3.40.0000.01812.70
4.3.30.0020.00912.70
4.3.20.0020.00912.70
4.3.10.0030.01812.70
4.3.00.0040.00912.70

preferences:
45.59 ms | 400 KiB | 5 Q