3v4l.org

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

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)
8.3.60.0100.01016.38
8.3.50.0100.00820.99
8.3.40.0030.01018.42
8.3.30.0060.00818.48
8.3.20.0040.00420.20
8.3.10.0040.00421.60
8.3.00.0080.00021.77
8.2.180.0070.00718.03
8.2.170.0130.00722.96
8.2.160.0000.01420.26
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0050.00321.10
8.2.120.0000.00726.35
8.2.110.0030.00621.10
8.2.100.0070.00417.78
8.2.90.0040.00417.90
8.2.80.0070.00017.97
8.2.70.0080.00017.63
8.2.60.0040.00417.91
8.2.50.0080.00018.09
8.2.40.0000.00720.55
8.2.30.0080.00019.35
8.2.20.0040.00417.65
8.2.10.0070.00018.04
8.2.00.0040.00418.11
8.1.280.0090.01225.92
8.1.270.0140.00422.25
8.1.260.0050.00328.09
8.1.250.0040.00428.09
8.1.240.0040.00722.48
8.1.230.0070.00420.84
8.1.220.0040.00417.76
8.1.210.0000.00818.91
8.1.200.0060.00617.23
8.1.190.0050.00317.22
8.1.180.0040.00418.10
8.1.170.0040.00418.34
8.1.160.0070.00020.65
8.1.150.0040.00418.73
8.1.140.0000.00819.46
8.1.130.0000.00717.58
8.1.120.0040.00417.43
8.1.110.0000.00717.39
8.1.100.0030.00417.31
8.1.90.0000.00717.41
8.1.80.0000.00717.36
8.1.70.0000.00717.34
8.1.60.0070.00317.47
8.1.50.0000.00817.48
8.1.40.0090.00017.45
8.1.30.0060.00317.61
8.1.20.0040.00417.52
8.1.10.0050.00317.48
8.1.00.0000.00717.27
8.0.300.0090.00019.90
8.0.290.0040.00416.63
8.0.280.0000.00718.28
8.0.270.0000.00717.05
8.0.260.0000.00717.23
8.0.250.0030.00316.84
8.0.240.0030.00516.89
8.0.230.0020.00516.82
8.0.220.0050.00216.66
8.0.210.0040.00416.70
8.0.200.0080.00016.74
8.0.190.0000.00716.89
8.0.180.0050.00216.74
8.0.170.0050.00516.74
8.0.160.0000.00716.80
8.0.150.0040.00416.72
8.0.140.0000.00716.68
8.0.130.0000.00713.28
8.0.120.0040.00416.68
8.0.110.0000.00716.82
8.0.100.0040.00416.79
8.0.90.0040.00416.78
8.0.80.0040.01116.79
8.0.70.0000.00716.66
8.0.60.0040.00416.70
8.0.50.0000.00716.70
8.0.30.0090.00716.95
8.0.20.0080.01217.40
8.0.10.0040.00416.99
8.0.00.0100.00716.57
7.4.330.0050.00016.68
7.4.320.0030.00316.53
7.4.300.0040.00416.34
7.4.290.0030.00316.51
7.4.280.0050.00216.33
7.4.270.0060.00016.50
7.4.260.0040.00416.33
7.4.250.0070.00016.53
7.4.240.0040.00416.41
7.4.230.0070.00016.27
7.4.220.0070.01316.54
7.4.210.0090.00616.52
7.4.200.0030.00516.39
7.4.160.0080.00816.28
7.4.150.0120.00617.40
7.4.140.0060.01117.86
7.4.130.0110.00816.45
7.4.120.0110.00616.29
7.4.110.0170.00016.27
7.4.100.0060.01616.33
7.4.90.0030.01916.25
7.4.80.0030.01319.39
7.4.70.0120.00416.46
7.4.60.0100.00716.33
7.4.50.0060.01016.42
7.4.40.0100.01016.56
7.4.30.0070.01516.36
7.4.10.0080.00814.72
7.4.00.0020.01514.82
7.3.330.0000.00513.05
7.3.320.0040.00413.08
7.3.310.0030.00316.02
7.3.300.0030.00316.03
7.3.290.0090.00716.17
7.3.280.0070.00916.25
7.3.270.0090.00917.40
7.3.260.0140.00316.29
7.3.250.0100.00716.19
7.3.240.0130.00416.26
7.3.230.0150.00316.46
7.3.210.0130.00316.44
7.3.200.0000.01719.39
7.3.190.0100.01416.21
7.3.180.0060.01516.30
7.3.170.0120.00916.34
7.3.160.0110.01116.42
7.3.130.0060.01214.66
7.3.120.0040.01114.76
7.3.110.0080.00614.57
7.3.100.0040.01214.95
7.3.90.0040.00814.67
7.3.80.0030.00614.90
7.3.70.0130.00014.93
7.3.60.0040.01114.72
7.3.50.0080.00414.84
7.3.40.0060.00614.85
7.3.30.0070.01114.67
7.3.20.0060.00616.53
7.3.10.0030.00916.68
7.3.00.0100.00716.37
7.2.330.0100.00716.45
7.2.320.0080.01516.51
7.2.310.0100.00716.42
7.2.300.0060.01016.33
7.2.290.0120.00816.33
7.2.260.0040.01514.71
7.2.250.0060.01014.56
7.2.240.0150.00014.84
7.2.230.0070.01014.71
7.2.220.0120.00314.80
7.2.210.0030.01214.69
7.2.200.0060.00314.87
7.2.190.0040.01114.69
7.2.180.0000.01014.69
7.2.170.0000.01514.82
7.2.160.0040.01414.95
7.2.150.0100.00716.80
7.2.140.0060.00816.77
7.2.130.0150.00416.76
7.2.120.0100.00016.66
7.2.110.0110.00316.61
7.2.100.0140.00316.77
7.2.90.0160.00316.50
7.2.80.0030.01316.68
7.2.70.0060.00616.68
7.2.60.0080.00616.71
7.2.50.0080.00816.70
7.2.40.0030.01016.63
7.2.30.0060.01016.92
7.2.20.0040.00816.77
7.2.10.0060.00916.75
7.2.00.0020.00917.96
7.1.330.0040.00815.57
7.1.320.0100.00715.50
7.1.310.0070.00715.70
7.1.300.0040.00715.79
7.1.290.0100.00015.89
7.1.280.0140.00315.67
7.1.270.0060.00315.84
7.1.260.0030.01015.88
7.1.250.0070.01015.82
7.1.240.0040.00415.89
7.1.230.0030.00915.46
7.1.220.0030.01015.63
7.1.210.0060.01015.82
7.1.200.0070.00715.49
7.1.190.0070.00415.77
7.1.180.0000.01415.84
7.1.170.0030.01015.81
7.1.160.0030.01015.66
7.1.150.0040.01115.86
7.1.140.0070.00715.81
7.1.130.0100.00315.45
7.1.120.0100.00015.62
7.1.110.0030.01015.67
7.1.100.0080.01117.01
7.1.90.0030.00715.83
7.1.80.0030.01015.74
7.1.70.0030.01016.30
7.1.60.0070.00817.55
7.1.50.0100.00816.41
7.1.40.0130.00315.89
7.1.30.0030.00815.83
7.1.20.0070.00715.68
7.1.10.0070.00715.71
7.1.00.0050.04019.07
7.0.330.0070.00714.98
7.0.320.0040.00715.54
7.0.310.0030.00715.48
7.0.300.0030.01015.40
7.0.290.0030.00615.36
7.0.280.0030.00915.13
7.0.270.0100.00315.44
7.0.260.0030.01015.34
7.0.250.0030.01015.41
7.0.240.0080.00315.48
7.0.230.0040.00815.57
7.0.220.0000.01215.42
7.0.210.0070.00315.35
7.0.200.0030.00816.01
7.0.190.0070.00315.38
7.0.180.0030.00715.25
7.0.170.0110.00015.30
7.0.160.0030.00915.25
7.0.150.0070.00315.41
7.0.140.0090.00315.25
7.0.130.0030.00715.55
7.0.120.0060.00615.46
7.0.110.0060.00615.24
7.0.100.0060.02517.62
7.0.90.0130.03317.64
7.0.80.0180.02017.54
7.0.70.0050.02317.71
7.0.60.0030.02517.69
7.0.50.0060.01917.84
7.0.40.0040.01816.59
7.0.30.0070.04316.72
7.0.20.0120.04016.85
7.0.10.0050.02316.70
7.0.00.0100.03016.75
5.6.400.0090.00614.04
5.6.390.0030.00614.14
5.6.380.0040.01114.11
5.6.370.0090.00613.85
5.6.360.0030.01414.40
5.6.350.0060.00314.45
5.6.340.0080.00614.09
5.6.330.0080.00414.19
5.6.320.0000.01514.44
5.6.310.0000.01314.43
5.6.300.0110.00314.22
5.6.290.0080.00414.41
5.6.280.0030.03217.72
5.6.270.0000.01314.41
5.6.260.0030.00814.19
5.6.250.0100.03817.54
5.6.240.0030.03117.37
5.6.230.0100.02517.50
5.6.220.0050.02717.34
5.6.210.0060.02317.44
5.6.200.0050.02517.68
5.6.190.0050.02317.57
5.6.180.0050.02217.71
5.6.170.0020.03117.53
5.6.160.0060.02217.65
5.6.150.0090.01817.67
5.6.140.0030.02617.54
5.6.130.0020.02317.61
5.6.120.0040.02917.56
5.6.110.0020.02817.58
5.6.100.0030.02817.53
5.6.90.0020.02117.61
5.6.80.0080.01817.21
5.6.70.0050.02417.14
5.6.60.0080.01817.24
5.6.50.0080.02117.41
5.6.40.0060.02117.10
5.6.30.0030.02417.19
5.6.20.0030.02317.43
5.6.10.0070.01717.20
5.6.00.0050.02217.20
5.5.380.0030.02317.25
5.5.370.0070.03617.22
5.5.360.0100.02017.13
5.5.350.0030.02617.20
5.5.340.0050.02217.46
5.5.330.0060.01817.51
5.5.320.0030.02217.50
5.5.310.0050.04017.63
5.5.300.0040.03317.57
5.5.290.0060.02817.33
5.5.280.0070.02717.41
5.5.270.0100.02017.35
5.5.260.0050.02617.63
5.5.250.0050.02517.25
5.5.240.0070.02017.08
5.5.230.0050.02417.21
5.5.220.0020.03117.14
5.5.210.0080.02217.13
5.5.200.0070.02016.98
5.5.190.0070.02217.08
5.5.180.0030.02617.11
5.5.170.0110.00013.92
5.5.160.0080.02217.09
5.5.150.0060.02217.20
5.5.140.0040.02417.15
5.5.130.0100.01817.02
5.5.120.0110.03717.01
5.5.110.0050.02517.14
5.5.100.0030.02716.93
5.5.90.0020.03716.86
5.5.80.0020.02616.97
5.5.70.0030.02317.09
5.5.60.0030.02317.02
5.5.50.0020.02517.22
5.5.40.0080.01817.09
5.5.30.0030.02117.00
5.5.20.0070.02216.93
5.5.10.0000.02816.93
5.5.00.0060.02317.09

preferences:
43.53 ms | 401 KiB | 5 Q