3v4l.org

run code in 300+ PHP versions simultaneously
<?php new stdClass($a=8); var_dump($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)
8.3.60.0090.00918.39
8.3.50.0070.01021.08
8.3.40.0070.00718.63
8.3.30.0070.00720.13
8.3.20.0080.00020.38
8.3.10.0080.00022.14
8.3.00.0000.00822.21
8.2.180.0070.00716.50
8.2.170.0140.00022.96
8.2.160.0130.00022.17
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0050.00320.81
8.2.110.0000.00920.39
8.2.100.0040.00717.66
8.2.90.0040.00419.08
8.2.80.0070.00019.30
8.2.70.0040.00417.25
8.2.60.0080.00317.80
8.2.50.0030.00618.07
8.2.40.0050.00318.21
8.2.30.0030.00319.43
8.2.20.0070.00017.58
8.2.10.0070.00017.56
8.2.00.0030.00617.52
8.1.280.0070.01125.92
8.1.270.0000.00723.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0090.00020.50
8.1.230.0030.00722.13
8.1.220.0000.00717.74
8.1.210.0040.00418.77
8.1.200.0030.00717.25
8.1.190.0050.00317.41
8.1.180.0050.00318.10
8.1.170.0040.00418.61
8.1.160.0040.00418.88
8.1.150.0000.00818.51
8.1.140.0050.00317.30
8.1.130.0000.00717.76
8.1.120.0080.00017.36
8.1.110.0040.00417.25
8.1.100.0030.00317.36
8.1.90.0000.00717.30
8.1.80.0030.00317.38
8.1.70.0040.00417.29
8.1.60.0060.00317.51
8.1.50.0070.00317.50
8.1.40.0070.00017.48
8.1.30.0030.00517.57
8.1.20.0030.00617.58
8.1.10.0040.00417.43
8.1.00.0080.00017.36
8.0.300.0000.00818.77
8.0.290.0000.00717.03
8.0.280.0000.00718.35
8.0.270.0030.00317.19
8.0.260.0000.00816.79
8.0.250.0070.00016.90
8.0.240.0050.00316.88
8.0.230.0030.00316.89
8.0.220.0040.00416.89
8.0.210.0030.00316.73
8.0.200.0040.00416.81
8.0.190.0070.00416.91
8.0.180.0070.00016.79
8.0.170.0000.00716.68
8.0.160.0000.00816.77
8.0.150.0030.00516.72
8.0.140.0110.00016.67
8.0.130.0000.00613.16
8.0.120.0000.00716.83
8.0.110.0040.00416.86
8.0.100.0020.00516.72
8.0.90.0000.00716.68
8.0.80.0040.01416.78
8.0.70.0050.00316.72
8.0.60.0080.00016.68
8.0.50.0050.00316.66
8.0.30.0130.00617.06
8.0.20.0170.00517.40
8.0.10.0050.00316.75
8.0.00.0100.00916.63
7.4.330.0050.00015.05
7.4.320.0030.00316.54
7.4.300.0000.00716.45
7.4.290.0030.00316.45
7.4.280.0030.00316.43
7.4.270.0070.00016.45
7.4.260.0030.00313.32
7.4.250.0050.00216.36
7.4.240.0050.00216.51
7.4.230.0000.00716.46
7.4.220.0030.01616.52
7.4.210.0090.00816.52
7.4.200.0070.00016.43
7.4.190.0040.00416.30
7.4.160.0030.01416.26
7.4.150.0040.01417.40
7.4.140.0060.01117.86
7.4.130.0040.01316.41
7.4.120.0100.00716.55
7.4.110.0120.01216.36
7.4.100.0100.00716.46
7.4.90.0110.00516.46
7.4.80.0100.00719.39
7.4.70.0080.00816.27
7.4.60.0140.00316.53
7.4.50.0040.00416.23
7.4.40.0040.01422.77
7.4.30.0100.00716.34
7.4.00.0070.00914.66
7.3.330.0050.00012.89
7.3.320.0040.00412.98
7.3.310.0070.00016.18
7.3.300.0030.00316.18
7.3.290.0030.01316.12
7.3.280.0070.00816.11
7.3.270.0170.00017.40
7.3.260.0090.01416.21
7.3.250.0180.00416.24
7.3.240.0070.01116.35
7.3.230.0000.01716.39
7.3.210.0090.00916.19
7.3.200.0030.01519.39
7.3.190.0070.01016.13
7.3.180.0120.00916.37
7.3.170.0090.00616.27
7.3.160.0090.00916.16
7.3.120.0060.01114.85
7.3.110.0000.01814.92
7.3.100.0100.01014.59
7.3.90.0040.01214.62
7.3.80.0030.00814.61
7.3.70.0030.01014.36
7.3.60.0070.00714.51
7.3.50.0000.01214.64
7.3.40.0070.01014.46
7.3.30.0140.00014.86
7.3.20.0090.00616.34
7.3.10.0050.00716.41
7.3.00.0060.00816.35
7.2.330.0100.00716.20
7.2.320.0070.01016.36
7.2.310.0060.01016.30
7.2.300.0110.00616.64
7.2.290.0120.00416.41
7.2.250.0100.01014.62
7.2.240.0170.00314.62
7.2.230.0060.00614.94
7.2.220.0030.01314.96
7.2.210.0070.00714.87
7.2.200.0090.00614.93
7.2.190.0030.00714.85
7.2.180.0000.01314.82
7.2.170.0070.00714.86
7.2.160.0000.00915.04
7.2.150.0070.00716.68
7.2.140.0030.01216.50
7.2.130.0060.00816.56
7.2.120.0050.01416.52
7.2.110.0080.00416.63
7.2.100.0080.00716.64
7.2.90.0120.00616.81
7.2.80.0080.01016.60
7.2.70.0070.00916.80
7.2.60.0100.00616.65
7.2.50.0060.00916.50
7.2.40.0040.01016.65
7.2.30.0070.00616.71
7.2.20.0060.00816.71
7.2.10.0090.00316.69
7.2.00.0060.01017.41
7.1.330.0030.01515.60
7.1.320.0030.01215.82
7.1.310.0060.00315.42
7.1.300.0080.00015.63
7.1.290.0070.00315.75
7.1.280.0030.00915.71
7.1.270.0030.00615.84
7.1.260.0030.00915.77
7.1.250.0070.00615.65
7.1.240.0070.00715.45
7.1.230.0050.01015.78
7.1.220.0030.01015.45
7.1.210.0070.00315.53
7.1.200.0060.00715.68
7.1.190.0070.00715.68
7.1.180.0070.00715.82
7.1.170.0030.00915.61
7.1.160.0060.00715.71
7.1.150.0020.00715.74
7.1.140.0080.00815.79
7.1.130.0060.00815.84
7.1.120.0060.00715.65
7.1.110.0070.00615.53
7.1.100.0050.00516.43
7.1.90.0060.00415.75
7.1.80.0040.00615.69
7.1.70.0080.00616.19
7.1.60.0070.01016.80
7.1.50.0120.00821.82
7.1.40.0060.00815.81
7.1.30.0050.00415.67
7.1.20.0040.01015.62
7.1.10.0030.00915.72
7.1.00.0040.02017.99
7.0.330.0030.01115.36
7.0.320.0090.00515.22
7.0.310.0050.00715.38
7.0.300.0060.00715.25
7.0.290.0070.00515.36
7.0.280.0060.00615.13
7.0.270.0030.01015.36
7.0.260.0090.00115.39
7.0.250.0090.00315.44
7.0.240.0070.00415.43
7.0.230.0050.00715.38
7.0.220.0060.00515.33
7.0.210.0080.00615.28
7.0.200.0020.00815.69
7.0.190.0040.00515.19
7.0.180.0070.00515.41
7.0.170.0050.00715.31
7.0.160.0050.00515.33
7.0.150.0040.00915.42
7.0.140.0080.02717.49
7.0.130.0070.00515.24
7.0.120.0060.00615.29
7.0.110.0050.00615.37
7.0.100.0060.00815.30
7.0.90.0020.00915.34
7.0.80.0070.02216.86
7.0.70.0080.02916.75
7.0.60.0170.02516.92
7.0.50.0150.03717.11
7.0.40.0060.02015.55
7.0.30.0060.02215.59
7.0.20.0060.03315.49
7.0.10.0060.03115.59
7.0.00.0030.02915.62
5.6.400.0060.00814.30
5.6.390.0080.00814.20
5.6.380.0050.00614.29
5.6.370.0060.00414.08
5.6.360.0070.00714.27
5.6.350.0060.00714.18
5.6.340.0030.01014.17
5.6.330.0080.00414.03
5.6.320.0070.00314.26
5.6.310.0100.00514.11
5.6.300.0110.00014.02
5.6.290.0070.00713.97
5.6.280.0060.02916.50
5.6.270.0040.00914.19
5.6.260.0050.00513.92
5.6.250.0060.00414.23
5.6.240.0030.01014.29
5.6.230.0030.03216.43
5.6.220.0130.01216.41
5.6.210.0050.03016.18
5.6.200.0070.03616.46
5.6.190.0070.03016.50
5.6.180.0070.02816.45
5.6.170.0090.02216.45
5.6.160.0070.03116.49
5.6.150.0050.03516.46
5.6.140.0070.03116.47
5.6.130.0030.02416.56
5.6.120.0080.02116.44
5.6.110.0060.03416.42
5.6.100.0100.03616.46
5.6.90.0080.01616.42
5.6.80.0040.02116.12
5.6.70.0050.02016.34
5.6.60.0050.01716.20
5.6.50.0030.02016.16
5.6.40.0060.02016.12
5.6.30.0080.01816.17
5.6.20.0070.01916.18
5.6.10.0050.01716.17
5.6.00.0030.01916.13
5.5.380.0060.00712.28
5.5.370.0040.03415.18
5.5.360.0050.03015.12
5.5.350.0060.02015.30
5.5.340.0050.03515.28
5.5.330.0040.02215.31
5.5.320.0060.01715.10
5.5.310.0000.03215.26
5.5.300.0040.02915.30
5.5.290.0090.02015.33
5.5.280.0040.03115.26
5.5.270.0070.03115.29
5.5.260.0070.01715.32
5.5.250.0070.01615.16
5.5.240.0030.02015.08
5.5.230.0050.01514.88
5.5.220.0070.02315.10
5.5.210.0030.01714.96
5.5.200.0060.01914.92
5.5.190.0040.02014.93
5.5.180.0070.02014.95
5.5.170.0030.00912.52
5.5.160.0050.01614.96
5.5.150.0040.01815.02
5.5.140.0020.02015.13
5.5.130.0050.01714.97
5.5.120.0040.01914.93
5.5.110.0050.01515.00
5.5.100.0030.01815.03
5.5.90.0050.01415.06
5.5.80.0070.01514.76
5.5.70.0050.01815.00
5.5.60.0050.02614.83
5.5.50.0030.01814.90
5.5.40.0000.02014.88
5.5.30.0070.01515.04
5.5.20.0030.01914.76
5.5.10.0010.02115.05
5.5.00.0040.01814.93
5.4.450.0060.01814.22
5.4.440.0040.01914.27
5.4.430.0060.02614.33
5.4.420.0070.01814.21
5.4.410.0030.01714.26
5.4.400.0080.01314.14
5.4.390.0030.01814.18
5.4.380.0030.02014.11
5.4.370.0050.01614.24
5.4.360.0040.01614.15
5.4.350.0040.01714.21
5.4.340.0050.01514.23
5.4.330.0020.00911.71
5.4.320.0030.01714.26
5.4.310.0020.01614.07
5.4.300.0050.01414.01
5.4.290.0030.01714.19
5.4.280.0020.01814.17
5.4.270.0030.01914.10
5.4.260.0040.01414.16
5.4.250.0040.01614.09
5.4.240.0010.01814.30
5.4.230.0040.01814.15
5.4.220.0020.01914.13
5.4.210.0090.01214.07
5.4.200.0020.01814.30
5.4.190.0090.01114.11
5.4.180.0050.01414.14
5.4.170.0060.01514.17
5.4.160.0080.01314.09
5.4.150.0060.01614.15
5.4.140.0030.01713.28
5.4.130.0040.01713.16
5.4.120.0030.01813.25
5.4.110.0040.01513.29
5.4.100.0010.01813.23
5.4.90.0050.02013.33
5.4.80.0050.01513.21
5.4.70.0040.01513.34
5.4.60.0020.01813.22
5.4.50.0010.01513.25
5.4.40.0040.03013.36
5.4.30.0040.02113.31
5.4.20.0060.01913.27
5.4.10.0050.01813.26
5.4.00.0050.02713.09
5.3.290.0010.02012.60
5.3.280.0020.01812.52
5.3.270.0090.01212.51
5.3.260.0030.01312.55
5.3.250.0040.01312.52
5.3.240.0040.01612.57
5.3.230.0020.01912.55
5.3.220.0050.01312.56
5.3.210.0070.01712.49
5.3.200.0040.01512.51
5.3.190.0030.01612.50
5.3.180.0060.01312.58
5.3.170.0050.01712.59
5.3.160.0050.01812.58
5.3.150.0040.02512.52
5.3.140.0020.02512.53
5.3.130.0070.03112.50
5.3.120.0090.02912.54
5.3.110.0040.02912.50
5.3.100.0080.02012.34
5.3.90.0030.02312.34
5.3.80.0050.01912.31
5.3.70.0060.02212.31
5.3.60.0010.02312.34
5.3.50.0070.02812.29
5.3.40.0080.02312.33
5.3.30.0040.01512.27
5.3.20.0070.02712.24
5.3.10.0030.02312.24
5.3.00.0050.02812.22
5.2.170.0070.03111.09
5.2.160.0070.03211.09
5.2.150.0050.01811.09
5.2.140.0060.03311.09
5.2.130.0070.02011.09
5.2.120.0050.03211.09
5.2.110.0030.02711.09
5.2.100.0100.02811.09
5.2.90.0060.03011.09
5.2.80.0040.02211.09
5.2.70.0050.03211.09
5.2.60.0060.02611.09
5.2.50.0050.02711.09
5.2.40.0020.01811.09
5.2.30.0030.01611.09
5.2.20.0060.01311.09
5.2.10.0090.03011.09
5.2.00.0030.03511.09
5.1.60.0030.02511.09
5.1.50.0070.02511.09
5.1.40.0100.02811.09
5.1.30.0130.02011.09
5.1.20.0030.03011.09
5.1.10.0050.02911.09
5.1.00.0050.02911.09
5.0.50.0050.02511.09
5.0.40.0060.02111.09
5.0.30.0020.03711.09
5.0.20.0030.01711.09
5.0.10.0050.02211.09
5.0.00.0020.02511.09
4.4.90.0030.01911.09
4.4.80.0000.01411.09
4.4.70.0070.01511.09
4.4.60.0000.01411.09
4.4.50.0050.00811.09
4.4.40.0020.02911.09
4.4.30.0010.02011.09
4.4.20.0020.01911.09
4.4.10.0030.01711.09
4.4.00.0060.02311.09
4.3.110.0000.01911.09
4.3.100.0050.01511.09
4.3.90.0030.02011.09
4.3.80.0000.03011.09
4.3.70.0000.01411.09
4.3.60.0050.01511.09
4.3.50.0020.01811.09
4.3.40.0010.03011.09
4.3.30.0020.01911.09
4.3.20.0020.02011.09
4.3.10.0020.01511.09
4.3.00.0020.01911.09

preferences:
45.67 ms | 401 KiB | 5 Q