3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = "laruence"; $var_dup = $var; debug_zval_dump($var_dup); 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)
8.3.60.0120.00616.25
8.3.50.0100.00921.07
8.3.40.0100.00718.60
8.3.30.0070.00718.72
8.3.20.0070.00020.16
8.3.10.0040.00421.77
8.3.00.0080.00021.77
8.2.180.0130.00618.16
8.2.170.0110.00422.96
8.2.160.0090.00620.52
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0000.01119.32
8.2.120.0040.00426.35
8.2.110.0030.00720.39
8.2.100.0040.00817.80
8.2.90.0040.00419.14
8.2.80.0090.00017.97
8.2.70.0060.00317.38
8.2.60.0080.00017.66
8.2.50.0000.00818.09
8.2.40.0090.00022.31
8.2.30.0080.00019.34
8.2.20.0070.00019.46
8.2.10.0030.00518.00
8.2.00.0000.00718.03
8.1.280.0040.01525.92
8.1.270.0060.00322.19
8.1.260.0040.00428.09
8.1.250.0070.00028.09
8.1.240.0030.00722.74
8.1.230.0060.00617.83
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0090.00317.22
8.1.190.0040.00417.23
8.1.180.0030.00518.10
8.1.170.0040.00418.45
8.1.160.0040.00420.61
8.1.150.0050.00318.86
8.1.140.0000.00819.45
8.1.130.0070.00017.50
8.1.120.0070.00017.31
8.1.110.0040.00417.28
8.1.100.0000.00717.29
8.1.90.0030.00517.33
8.1.80.0000.00817.43
8.1.70.0040.00417.45
8.1.60.0030.00817.50
8.1.50.0050.00317.39
8.1.40.0040.00417.34
8.1.30.0000.00817.54
8.1.20.0000.00817.47
8.1.10.0080.00017.51
8.1.00.0030.00517.33
8.0.300.0000.00818.77
8.0.290.0000.00716.75
8.0.280.0080.00018.41
8.0.270.0030.00317.06
8.0.260.0000.00617.10
8.0.250.0040.00416.82
8.0.240.0080.00016.86
8.0.230.0060.00016.78
8.0.220.0000.00816.84
8.0.210.0000.00716.85
8.0.200.0000.00816.89
8.0.190.0080.00016.88
8.0.180.0040.00416.76
8.0.170.0090.00016.85
8.0.160.0070.00016.94
8.0.150.0040.00416.76
8.0.140.0040.00416.77
8.0.130.0060.00013.18
8.0.120.0000.00816.72
8.0.110.0080.00016.86
8.0.100.0080.00016.95
8.0.90.0080.00016.80
8.0.80.0110.00416.89
8.0.70.0000.00716.86
8.0.60.0060.00316.81
8.0.50.0050.00316.63
8.0.30.0110.00617.07
8.0.20.0080.01017.40
8.0.10.0080.00016.77
8.0.00.0110.00716.58
7.4.330.0000.00516.67
7.4.320.0070.00016.54
7.4.300.0030.00316.45
7.4.290.0000.00716.52
7.4.280.0050.00316.57
7.4.270.0030.00316.58
7.4.260.0030.00316.43
7.4.250.0030.00516.40
7.4.240.0040.00316.43
7.4.230.0070.00016.51
7.4.220.0090.00916.50
7.4.210.0170.00716.48
7.4.200.0000.00716.19
7.4.160.0100.00716.51
7.4.150.0090.00917.40
7.4.140.0130.00617.86
7.4.130.0150.00616.34
7.4.120.0040.01416.32
7.4.110.0070.01416.30
7.4.100.0140.00316.45
7.4.90.0100.00716.36
7.4.80.0110.00819.39
7.4.70.0060.00916.35
7.4.60.0060.01216.50
7.4.50.0070.00716.52
7.4.40.0050.01116.55
7.4.30.0190.00316.55
7.4.10.0110.00714.98
7.4.00.0070.01014.79
7.3.330.0050.00012.95
7.3.320.0050.00212.91
7.3.310.0070.00016.13
7.3.300.0030.00316.22
7.3.290.0090.00716.21
7.3.280.0060.01016.20
7.3.270.0070.01017.40
7.3.260.0060.01216.09
7.3.240.0050.01316.17
7.3.230.0140.00516.39
7.3.210.0150.00916.55
7.3.200.0030.02019.39
7.3.190.0190.00316.20
7.3.180.0070.01016.49
7.3.170.0090.01216.29
7.3.160.0100.01016.23
7.3.130.0100.00714.94
7.3.120.0020.01414.51
7.3.110.0090.00814.93
7.3.100.0070.00714.68
7.3.90.0030.01114.54
7.3.80.0060.00614.59
7.3.70.0030.01114.67
7.3.60.0050.01014.69
7.3.50.0090.00614.76
7.3.40.0050.00714.69
7.3.30.0040.00714.58
7.3.20.0070.00616.39
7.3.10.0090.00316.52
7.3.00.0050.00816.55
7.2.330.0130.00316.61
7.2.320.0180.00316.56
7.2.310.0090.00916.24
7.2.300.0090.01416.54
7.2.290.0100.00716.32
7.2.260.0060.01314.74
7.2.250.0080.00814.62
7.2.240.0030.01214.81
7.2.230.0050.01114.71
7.2.220.0060.00814.88
7.2.210.0050.00814.93
7.2.200.0060.00914.83
7.2.190.0080.00714.79
7.2.180.0060.00814.80
7.2.170.0100.00414.84
7.2.160.0100.00614.74
7.2.150.0080.00716.54
7.2.140.0080.00316.51
7.2.130.0100.00516.63
7.2.120.0070.00716.69
7.2.110.0050.01216.59
7.2.100.0040.00716.65
7.2.90.0030.01016.66
7.2.80.0020.01216.62
7.2.70.0060.00816.75
7.2.60.0100.00416.61
7.2.50.0010.01416.75
7.2.40.0020.01216.63
7.2.30.0050.01016.76
7.2.20.0050.00916.61
7.2.10.0050.00816.76
7.2.00.0070.00517.18
7.1.330.0060.00715.84
7.1.320.0050.00915.86
7.1.310.0030.00915.77
7.1.300.0060.00515.77
7.1.290.0030.01115.82
7.1.280.0090.00515.74
7.1.270.0040.00915.66
7.1.260.0050.00715.73
7.1.250.0060.00815.77
7.1.240.0040.01115.39
7.1.230.0060.01015.60
7.1.220.0040.00715.52
7.1.210.0040.00415.46
7.1.200.0050.00815.63
7.1.190.0030.00615.86
7.1.180.0070.00715.84
7.1.170.0000.01215.70
7.1.160.0060.00315.58
7.1.150.0000.01415.86
7.1.140.0100.00315.86
7.1.130.0070.00715.69
7.1.120.0040.00715.55
7.1.110.0030.01015.80
7.1.100.0090.00616.95
7.1.90.0040.00715.63
7.1.80.0070.01015.49
7.1.70.0090.00216.38
7.1.60.0060.01117.67
7.1.50.0050.00916.40
7.1.40.0060.00815.81
7.1.30.0050.00515.80
7.1.20.0050.00315.93
7.1.10.0030.00915.48
7.1.00.0050.03918.93
7.0.330.0060.00315.44
7.0.320.0030.00915.36
7.0.310.0000.00815.11
7.0.300.0060.01215.16
7.0.290.0040.00815.53
7.0.280.0030.00915.57
7.0.270.0030.01015.38
7.0.260.0060.00615.38
7.0.250.0030.01415.37
7.0.240.0000.01115.31
7.0.230.0110.00415.12
7.0.220.0000.00815.16
7.0.210.0120.00315.44
7.0.200.0110.00416.05
7.0.190.0090.00315.46
7.0.180.0030.00815.22
7.0.170.0100.00315.45
7.0.160.0060.00315.34
7.0.150.0130.00015.35
7.0.140.0050.00315.68
7.0.130.0080.00415.59
7.0.120.0030.01015.51
7.0.110.0000.01015.34
7.0.100.0030.00715.52
7.0.90.0030.00615.54
7.0.80.0130.00015.28
7.0.70.0000.00815.45
7.0.60.0130.02517.62
7.0.50.0020.03016.71
7.0.40.0080.03616.84
7.0.30.0190.03516.64
7.0.20.0160.02216.58
7.0.10.0050.04116.82
7.0.00.0040.02916.70
5.6.400.0070.00714.29
5.6.390.0000.01514.34
5.6.380.0030.01414.39
5.6.370.0040.00814.39
5.6.360.0100.00714.24
5.6.350.0000.00914.48
5.6.340.0040.01114.07
5.6.330.0060.00914.17
5.6.320.0060.00613.72
5.6.310.0100.00314.40
5.6.300.0060.01014.51
5.6.290.0030.01314.35
5.6.280.0050.01817.69
5.6.270.0070.00714.24
5.6.260.0030.01013.98
5.6.250.0030.00614.45
5.6.240.0060.00614.37
5.6.230.0100.00714.49
5.6.220.0040.00414.13
5.6.210.0070.04317.29
5.6.200.0060.04016.20
5.6.190.0090.02117.37
5.6.180.0050.02517.37
5.6.170.0180.02217.38
5.6.160.0050.04417.41
5.6.150.0050.03716.31
5.6.140.0030.02116.06
5.6.130.0070.03216.33
5.6.120.0020.03217.54
5.6.110.0030.04617.64
5.6.100.0070.03517.61
5.6.90.0110.03617.60
5.6.80.0080.04317.32
5.6.70.0120.00013.73
5.6.60.0080.00414.11
5.6.50.0040.00713.93
5.6.40.0070.00714.16
5.6.30.0070.00714.13
5.6.20.0090.00614.16
5.6.10.0040.00813.96
5.6.00.0090.00613.93
5.5.380.0030.00613.91
5.5.370.0110.00314.00
5.5.360.0060.00314.40
5.5.350.0220.03817.25
5.5.340.0080.02815.92
5.5.330.0120.04017.05
5.5.320.0280.03516.99
5.5.310.0150.03117.16
5.5.300.0100.03516.11
5.5.290.0040.02416.01
5.5.280.0070.02717.27
5.5.270.0050.03117.33
5.5.260.0050.03717.17
5.5.250.0100.03817.09
5.5.240.0210.03517.06
5.5.230.0030.00614.05
5.5.220.0070.00313.61
5.5.210.0060.00314.02
5.5.200.0100.00314.04
5.5.190.0040.01114.18
5.5.180.0040.00813.60
5.5.170.0040.00713.81
5.5.160.0070.00714.06
5.5.150.0090.00614.05
5.5.140.0060.00614.09
5.5.130.0040.00814.03
5.5.120.0090.00013.99
5.5.110.0070.00713.75
5.5.100.0080.00813.98
5.5.90.0000.01513.83
5.5.80.0110.00714.09
5.5.70.0090.00913.88
5.5.60.0090.00013.73
5.5.50.0000.00814.07
5.5.40.0040.00814.01
5.5.30.0030.01014.05
5.5.20.0070.00614.28
5.5.10.0080.00313.86
5.5.00.0100.00613.94

preferences:
60.79 ms | 401 KiB | 5 Q