3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ''; var_dump(isset($a));

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)
8.3.60.0040.01116.47
8.3.50.0110.00822.00
8.3.40.0120.00318.89
8.3.30.0070.00718.77
8.3.20.0060.00320.22
8.3.10.0080.00023.48
8.3.00.0050.00319.26
8.2.180.0120.00418.41
8.2.170.0070.00722.96
8.2.160.0140.00020.35
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0090.00926.16
8.2.120.0040.00422.11
8.2.110.0060.00320.99
8.2.100.0070.00417.78
8.2.90.0040.00417.78
8.2.80.0040.00417.97
8.2.70.0040.00417.63
8.2.60.0040.00417.90
8.2.50.0060.00318.07
8.2.40.0050.00318.09
8.2.30.0080.00017.99
8.2.20.0040.00417.52
8.2.10.0080.00017.86
8.2.00.0030.00717.61
8.1.280.0130.00325.92
8.1.270.0080.00023.96
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0080.00320.55
8.1.230.0040.00720.97
8.1.220.0030.00617.74
8.1.210.0000.00818.83
8.1.200.0080.00017.23
8.1.190.0000.00817.28
8.1.180.0030.00619.14
8.1.170.0040.00418.35
8.1.160.0000.00821.78
8.1.150.0000.00818.56
8.1.140.0050.00217.29
8.1.130.0000.00817.71
8.1.120.0030.00317.39
8.1.110.0040.00417.46
8.1.100.0040.00417.41
8.1.90.0020.00517.34
8.1.80.0040.00417.37
8.1.70.0000.00817.23
8.1.60.0100.00317.41
8.1.50.0040.00417.33
8.1.40.0000.00817.46
8.1.30.0050.00317.56
8.1.20.0030.00717.59
8.1.10.0040.00417.32
8.1.00.0040.00417.44
8.0.300.0030.00319.98
8.0.290.0040.00417.18
8.0.280.0030.00318.21
8.0.270.0030.00317.17
8.0.260.0000.00617.24
8.0.250.0030.00316.88
8.0.240.0060.00016.91
8.0.230.0040.00416.79
8.0.220.0000.00716.84
8.0.210.0070.00016.86
8.0.200.0030.00316.89
8.0.190.0070.00016.85
8.0.180.0000.00816.81
8.0.170.0040.00416.73
8.0.160.0070.00016.80
8.0.150.0030.00316.77
8.0.140.0040.00416.86
8.0.130.0030.00313.13
8.0.120.0040.00416.68
8.0.110.0070.00016.87
8.0.100.0050.00316.84
8.0.90.0060.00316.82
8.0.80.0060.00916.80
8.0.70.0040.00416.75
8.0.60.0040.00416.77
8.0.50.0040.00416.82
8.0.30.0110.00717.01
8.0.20.0120.00617.40
8.0.10.0040.00416.91
8.0.00.0100.01016.73
7.4.330.0060.00015.14
7.4.320.0030.00316.41
7.4.300.0070.00016.53
7.4.290.0000.00716.47
7.4.280.0000.00916.51
7.4.270.0020.00516.54
7.4.260.0030.00316.51
7.4.250.0000.00716.37
7.4.240.0040.00416.50
7.4.230.0040.00416.36
7.4.220.0030.01416.57
7.4.210.0060.00816.50
7.4.200.0000.00716.18
7.4.190.0000.00716.57
7.4.160.0100.00716.32
7.4.150.0080.00817.40
7.4.140.0130.00517.86
7.4.130.0050.01116.36
7.4.120.0040.01316.35
7.4.110.0060.00916.32
7.4.100.0050.01816.41
7.4.90.0100.00616.32
7.4.80.0070.01419.39
7.4.70.0060.01016.44
7.4.60.0110.01116.44
7.4.50.0000.00816.07
7.4.40.0090.00622.77
7.4.30.0120.00316.30
7.4.00.0050.01214.83
7.3.330.0000.00613.05
7.3.320.0030.00312.99
7.3.310.0000.00716.01
7.3.300.0040.00416.13
7.3.290.0140.00316.18
7.3.280.0110.00816.13
7.3.270.0100.00717.40
7.3.260.0100.01116.06
7.3.250.0100.00916.34
7.3.240.0100.01316.34
7.3.230.0100.01016.39
7.3.210.0130.00316.34
7.3.200.0120.00619.39
7.3.190.0150.00616.42
7.3.180.0070.01016.18
7.3.170.0090.01216.27
7.3.160.0080.00816.17
7.3.120.0030.01414.78
7.3.110.0030.01414.74
7.3.100.0030.01214.67
7.3.90.0140.00314.83
7.3.80.0120.00614.73
7.3.70.0060.00914.72
7.3.60.0130.00314.71
7.3.50.0100.00914.77
7.3.40.0110.00714.46
7.3.30.0040.01414.61
7.3.20.0070.00716.61
7.3.10.0040.01116.48
7.3.00.0000.01316.55
7.2.330.0090.00916.39
7.2.320.0100.00716.52
7.2.310.0070.01116.40
7.2.300.0100.00716.62
7.2.290.0090.00616.32
7.2.250.0070.01114.87
7.2.240.0040.01115.06
7.2.230.0070.01014.81
7.2.220.0110.00714.96
7.2.210.0070.00715.05
7.2.200.0040.01114.82
7.2.190.0040.01114.75
7.2.180.0000.01714.98
7.2.170.0040.01114.75
7.2.60.0030.01416.82
7.2.00.0060.00319.29
7.1.330.0100.00315.68
7.1.320.0100.00615.81
7.1.310.0000.01115.97
7.1.300.0000.01115.76
7.1.290.0100.00715.58
7.1.280.0070.01015.71
7.1.270.0000.01715.73
7.1.260.0000.00915.73
7.1.100.0060.00617.62
7.1.70.0060.00317.03
7.1.60.0070.01819.33
7.1.50.0070.01116.98
7.1.00.0030.09322.51
7.0.200.0060.00316.43
7.0.140.0030.07322.00
7.0.60.0070.08019.92
7.0.50.0000.08317.66
7.0.40.0130.07320.27
7.0.30.0370.07020.20
7.0.20.0330.04720.22
7.0.10.0100.05720.14
7.0.00.0070.03720.08
5.6.280.0070.07020.92
5.6.210.0100.07020.50
5.6.200.0070.04018.19
5.6.190.0100.07720.48
5.6.180.0370.07020.41
5.6.170.0270.07720.49
5.6.160.0100.04720.35
5.6.150.0170.06018.11
5.6.140.0100.07718.11
5.6.130.0070.06318.21
5.6.120.0070.05020.99
5.6.110.0130.08021.00
5.6.100.0000.04320.97
5.6.90.0070.07320.96
5.6.80.0230.05720.50
5.5.350.0100.09020.44
5.5.340.0030.04317.98
5.5.330.0070.03720.36
5.5.320.0100.07320.32
5.5.310.0170.05320.41
5.5.300.0070.05317.91
5.5.290.0170.07717.92
5.5.280.0070.08020.79
5.5.270.0030.04320.95
5.5.260.0000.08320.75
5.5.250.0070.08720.74
5.5.240.4130.03320.15
5.4.450.0200.04719.55
5.4.440.0830.05719.58
5.4.430.0670.05319.54
5.4.420.0430.05319.63
5.4.410.0800.06719.00
5.4.400.0330.06318.78
5.4.390.0730.05318.77
5.4.380.0270.05018.72
5.4.370.0400.04318.65
5.4.360.0200.05718.74
5.4.350.0130.06318.57
5.4.340.0400.04718.61
5.4.320.0080.03712.45
5.4.310.0070.04112.45
5.4.300.0060.03912.45
5.4.290.0120.03912.45
5.4.280.0090.03912.32
5.4.270.0170.05512.32
5.4.260.0060.04612.32
5.4.250.0140.04112.32
5.4.240.0100.04412.32
5.4.230.0070.04812.31
5.4.220.0030.04112.31
5.4.210.0090.04112.31
5.4.200.0090.04112.31
5.4.190.0060.04112.31
5.4.180.0090.03512.31
5.4.170.0060.04112.32
5.4.160.0050.03812.32
5.4.150.0050.03912.31
5.4.140.0060.04412.00
5.4.130.0070.04711.98
5.4.120.0160.07111.94
5.4.110.0120.06211.93
5.4.100.0070.05311.94
5.4.90.0120.05311.93
5.4.80.0070.05011.94
5.4.70.0110.04511.93
5.4.60.0180.06211.93
5.4.50.0110.06111.93
5.4.40.0090.05511.92
5.4.30.0230.06911.92
5.4.20.0110.05311.92
5.4.10.0100.05511.92
5.4.00.0090.05911.41
5.3.290.0080.04712.80
5.3.280.0060.05612.71
5.3.270.0110.07912.73
5.3.260.0340.06112.71
5.3.250.0070.04212.72
5.3.240.0080.04412.72
5.3.230.0090.04212.71
5.3.220.0230.08012.68
5.3.210.0090.05012.68
5.3.200.0100.05512.68
5.3.190.0240.06412.68
5.3.180.0100.06212.68
5.3.170.0250.09112.67
5.3.160.0180.07912.67
5.3.150.0140.07112.67
5.3.140.0080.05512.66
5.3.130.0230.03512.66
5.3.120.0100.04412.66
5.3.110.0190.07412.66
5.3.100.0070.05212.12
5.3.90.0080.03712.08
5.3.80.0110.05112.07
5.3.70.0100.04212.07
5.3.60.0120.05412.07
5.3.50.0110.06412.00
5.3.40.0100.05112.00
5.3.30.0110.05811.94
5.3.20.0200.08011.70
5.3.10.0080.05211.67
5.3.00.0310.08211.65

preferences:
91.78 ms | 401 KiB | 5 Q