3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = "laruence"; $var_dup = $var; debug_zval_dump($var_dup); debug_zval_dump($var); unset($var); debug_zval_dump($var_dup);

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)
8.3.60.0100.01016.50
8.3.50.0120.00521.22
8.3.40.0090.00618.81
8.3.30.0080.00818.63
8.3.20.0040.00420.21
8.3.10.0080.00021.60
8.3.00.0070.00021.60
8.2.180.0120.00318.36
8.2.170.0070.00722.96
8.2.160.0170.00020.36
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0070.00021.11
8.2.120.0040.00426.35
8.2.110.0000.00921.03
8.2.100.0080.00317.66
8.2.90.0040.00417.72
8.2.80.0040.00418.19
8.2.70.0040.00417.50
8.2.60.0070.00017.80
8.2.50.0040.00418.09
8.2.40.0000.00720.42
8.2.30.0040.00419.32
8.2.20.0070.00319.43
8.2.10.0040.00418.10
8.2.00.0000.00717.95
8.1.280.0150.00325.92
8.1.270.0040.00422.13
8.1.260.0040.00428.09
8.1.250.0070.00028.09
8.1.240.0070.00422.32
8.1.230.0110.00021.04
8.1.220.0000.00817.74
8.1.210.0000.00818.85
8.1.200.0060.00617.13
8.1.190.0050.00317.23
8.1.180.0080.00018.10
8.1.170.0060.00618.60
8.1.160.0000.00720.65
8.1.150.0050.00218.92
8.1.140.0000.00819.56
8.1.130.0030.00317.63
8.1.120.0040.00417.40
8.1.110.0040.00417.38
8.1.100.0000.00717.36
8.1.90.0000.00817.36
8.1.80.0040.00417.34
8.1.70.0030.00317.28
8.1.60.0030.00717.40
8.1.50.0040.00417.48
8.1.40.0040.00417.47
8.1.30.0050.00317.58
8.1.20.0050.00217.56
8.1.10.0000.00717.50
8.1.00.0030.00517.49
8.0.300.0030.00319.82
8.0.290.0000.00816.63
8.0.280.0050.00218.36
8.0.270.0030.00317.18
8.0.260.0040.00417.23
8.0.250.0040.00416.89
8.0.240.0040.00416.77
8.0.230.0030.00316.77
8.0.220.0030.00616.82
8.0.210.0000.00716.69
8.0.200.0030.00316.80
8.0.190.0060.00316.79
8.0.180.0050.00316.82
8.0.170.0050.00316.83
8.0.160.0030.00316.82
8.0.150.0040.00316.86
8.0.140.0000.00816.73
8.0.130.0050.00013.22
8.0.120.0000.00816.80
8.0.110.0030.00516.65
8.0.100.0040.00416.83
8.0.90.0000.00816.88
8.0.80.0130.00716.70
8.0.70.0040.00416.62
8.0.60.0050.00216.82
8.0.50.0000.00816.83
8.0.30.0050.01316.83
8.0.20.0060.01217.40
8.0.10.0040.00416.97
8.0.00.0120.00816.79
7.4.330.0050.00016.76
7.4.320.0060.00016.29
7.4.300.0030.00316.57
7.4.290.0000.00716.50
7.4.280.0040.00416.40
7.4.270.0000.00716.42
7.4.260.0070.00016.35
7.4.250.0050.00216.38
7.4.240.0070.00016.43
7.4.230.0070.00016.51
7.4.220.0100.01316.55
7.4.210.0110.00416.55
7.4.200.0040.00416.53
7.4.160.0060.01216.35
7.4.150.0100.00717.40
7.4.140.0090.01017.86
7.4.130.0080.00816.51
7.4.120.0110.00716.52
7.4.110.0070.01016.40
7.4.100.0090.00916.25
7.4.90.0070.01116.29
7.4.80.0070.01019.39
7.4.70.0030.01316.36
7.4.60.0090.00616.47
7.4.50.0090.00616.39
7.4.40.0120.00316.44
7.4.30.0190.00316.28
7.4.00.0060.00314.63
7.3.330.0050.00013.04
7.3.320.0030.00313.06
7.3.310.0030.00316.24
7.3.300.0040.00416.16
7.3.290.0100.00616.22
7.3.280.0050.01016.19
7.3.270.0140.00317.40
7.3.260.0140.00916.20
7.3.250.0070.01116.17
7.3.240.0040.01316.40
7.3.230.0070.01016.39
7.3.210.0100.01416.38
7.3.200.0140.00319.39
7.3.190.0100.01416.57
7.3.180.0060.01116.14
7.3.170.0110.00616.27
7.3.160.0100.00716.43
7.2.330.0090.00616.39
7.2.320.0040.01416.34
7.2.310.0030.01916.28
7.2.300.0090.00916.31
7.2.290.0140.00316.39
7.2.60.0000.01416.59
7.2.00.0070.00719.26
7.1.200.0080.00015.83
7.1.100.0120.00817.87
7.1.70.0030.00616.81
7.1.60.0110.01419.40
7.1.50.0120.00917.01
7.1.00.0030.07722.36
7.0.200.0030.00516.66
7.0.100.0170.05319.97
7.0.90.0070.07319.98
7.0.80.0030.04019.89
7.0.70.0000.04719.87
7.0.60.0000.04020.07
7.0.50.0030.04320.35
7.0.40.0070.03720.11
7.0.30.0130.07320.14
7.0.20.0070.07720.05
7.0.10.0170.07720.04
7.0.00.0070.04020.04
5.6.280.0000.04320.98
5.6.250.0030.04020.77
5.6.240.0030.04320.57
5.6.230.0070.04020.58
5.6.220.0100.08020.61
5.6.210.0070.06720.48
5.6.200.0100.05321.02
5.6.190.0100.06321.09
5.6.180.0070.08021.16
5.6.170.0000.05021.02
5.6.160.0030.08721.10
5.6.150.0030.08020.94
5.6.140.0100.07021.09
5.6.130.0100.08020.98
5.6.120.0130.04321.01
5.6.110.0200.07321.15
5.6.100.0130.07321.04
5.6.90.0030.08020.97
5.6.80.0070.08320.44
5.6.70.0200.06320.42
5.6.60.0030.07320.28
5.6.50.0070.06320.41
5.6.40.0230.05720.29
5.6.30.0000.04320.40
5.6.20.0130.07020.42
5.6.10.0070.07720.39
5.6.00.0030.05720.47
5.5.380.0000.04720.35
5.5.370.0070.04020.36
5.5.360.0100.07320.53
5.5.350.0070.03720.43
5.5.340.0030.05020.85
5.5.330.0100.08020.88
5.5.320.0070.08720.86
5.5.310.0070.03720.82
5.5.300.0170.04020.85
5.5.290.0230.06320.79
5.5.280.0030.07020.88
5.5.270.0170.07720.87
5.5.260.0130.05320.86
5.5.250.0100.07720.66
5.5.240.0100.06720.14
5.5.230.0170.07320.18
5.5.220.0070.07720.20
5.5.210.0030.05020.01
5.5.200.0100.07720.23
5.5.190.0170.06720.10
5.5.180.0100.05720.24
5.5.160.0070.07020.09
5.5.150.0170.07020.08
5.5.140.0030.08020.09
5.5.130.0030.07320.27
5.5.120.0070.04320.22
5.5.110.0070.03720.26
5.5.100.0170.04720.07
5.5.90.0230.05320.04
5.5.80.0070.06020.05
5.5.70.0070.08319.95
5.5.60.0070.07720.06
5.5.50.0030.04320.14
5.5.40.0030.04019.90
5.5.30.0170.06719.98
5.5.20.0100.07720.12
5.5.10.0070.07719.97
5.5.00.0030.09019.96

preferences:
55.55 ms | 401 KiB | 5 Q