3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '12345'; $c = ''; $i = 0; var_dump($a{$i}); for($i = 0; $a{$i} != ''; $i++){ $c = $b . $c; } var_dump($c);

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)
8.3.60.0080.00818.18
8.3.50.0140.00822.12
8.3.40.0120.00918.71
8.3.30.0040.01118.95
8.3.20.0000.00820.21
8.3.10.0040.00420.49
8.3.00.0090.00019.38
8.2.180.0090.00616.38
8.2.170.0100.00722.96
8.2.160.0070.00720.53
8.2.150.0000.00724.18
8.2.140.0000.00924.66
8.2.130.0000.00726.16
8.2.120.0080.00019.49
8.2.110.0060.00322.06
8.2.100.0000.01217.66
8.2.90.0000.00719.09
8.2.80.0030.00617.97
8.2.70.0000.00917.50
8.2.60.0050.00317.91
8.2.50.0080.00018.07
8.2.40.0050.00218.08
8.2.30.0000.00819.49
8.2.20.0040.00417.43
8.2.10.0000.00817.79
8.2.00.0070.00017.42
8.1.280.0100.00725.92
8.1.270.0060.00322.20
8.1.260.0000.00826.35
8.1.250.0030.00528.09
8.1.240.0040.00423.87
8.1.230.0080.00318.97
8.1.220.0050.00317.74
8.1.210.0000.00918.77
8.1.200.0080.00317.23
8.1.190.0060.00317.10
8.1.180.0080.00018.10
8.1.170.0030.00618.51
8.1.160.0000.00721.93
8.1.150.0030.00318.75
8.1.140.0050.00317.33
8.1.130.0070.00017.66
8.1.120.0030.00317.38
8.1.110.0080.00017.38
8.1.100.0070.00017.23
8.1.90.0030.00317.21
8.1.80.0030.00317.32
8.1.70.0030.00317.27
8.1.60.0060.00317.39
8.1.50.0030.00517.35
8.1.40.0000.00717.20
8.1.30.0000.00817.39
8.1.20.0000.00717.41
8.1.10.0000.00817.43
8.1.00.0000.00817.30
8.0.300.0070.00018.77
8.0.290.0000.00816.75
8.0.280.0040.00418.19
8.0.270.0030.00317.09
8.0.260.0030.00317.13
8.0.250.0060.00016.85
8.0.240.0030.00516.84
8.0.230.0030.00316.77
8.0.220.0030.00316.91
8.0.210.0000.00816.70
8.0.200.0000.00616.95
8.0.190.0000.00816.77
8.0.180.0000.00716.90
8.0.170.0070.00016.88
8.0.160.0050.00316.89
8.0.150.0040.00416.68
8.0.140.0000.00716.82
8.0.130.0030.00313.20
8.0.120.0070.00016.75
8.0.110.0000.00716.66
8.0.100.0040.00416.68
8.0.90.0030.00316.71
8.0.80.0090.00616.80
8.0.70.0060.00316.86
8.0.60.0070.00016.60
8.0.50.0000.00716.69
8.0.30.0110.00716.84
8.0.20.0120.01017.40
8.0.10.0040.00417.00
8.0.00.0080.00816.63
7.4.330.0000.00515.08
7.4.320.0030.00316.61
7.4.300.0060.00016.51
7.4.290.0000.00716.53
7.4.280.0000.00716.66
7.4.270.0050.00216.48
7.4.260.0050.00316.56
7.4.250.0050.00516.54
7.4.240.0040.00416.52
7.4.230.0030.00316.40
7.4.220.0080.00816.70
7.4.210.0090.00916.47
7.4.200.0040.00416.59
7.4.160.0100.00516.55
7.4.150.0130.00917.40
7.4.140.0100.00717.86
7.4.130.0070.01016.66
7.4.120.0100.00716.49
7.4.110.0150.00416.66
7.4.100.0130.01016.66
7.4.90.0060.01216.42
7.4.80.0070.01019.39
7.4.70.0060.00916.39
7.4.60.0140.00316.36
7.4.50.0040.00416.21
7.4.40.0030.01316.48
7.4.30.0110.00416.57
7.4.00.0070.01014.97
7.3.330.0000.00613.20
7.3.320.0000.00513.27
7.3.310.0000.00716.47
7.3.300.0000.00716.36
7.3.290.0110.01116.36
7.3.280.0090.00816.34
7.3.270.0160.00417.40
7.3.260.0120.00416.51
7.3.250.0110.00816.46
7.3.240.0110.00616.37
7.3.230.0140.00316.43
7.3.210.0060.01616.57
7.3.200.0030.01619.39
7.3.190.0150.00616.50
7.3.180.0070.01016.36
7.3.170.0100.00716.44
7.3.160.0130.00316.56
7.3.120.0090.00615.04
7.3.110.0090.00614.85
7.3.100.0120.00314.89
7.3.90.0090.00314.76
7.3.80.0060.01014.97
7.3.70.0130.00314.73
7.3.60.0070.00714.91
7.3.50.0030.01314.78
7.3.40.0070.00714.85
7.3.30.0090.00614.93
7.3.20.0100.00316.49
7.3.10.0110.00716.78
7.3.00.0100.00316.67
7.2.330.0110.00716.76
7.2.320.0080.01116.52
7.2.310.0100.00716.40
7.2.300.0110.00616.72
7.2.290.0130.00616.67
7.2.240.0040.01414.92
7.2.230.0030.00915.20
7.2.220.0030.01315.24
7.2.210.0040.01214.99
7.2.200.0040.01314.66
7.2.190.0000.01714.88
7.2.180.0030.01214.77
7.2.170.0060.01014.93
7.2.160.0070.01014.75
7.2.150.0090.00916.85
7.2.140.0090.00616.84
7.2.130.0040.00816.86
7.2.120.0040.01116.87
7.2.110.0000.01316.59
7.2.100.0070.01016.90
7.2.90.0070.01016.93
7.2.80.0120.00016.78
7.2.70.0040.01116.88
7.2.60.0130.00316.77
7.2.50.0000.01416.86
7.2.40.0060.01016.79
7.2.30.0090.00916.89
7.2.20.0030.01416.46
7.2.10.0120.00416.92
7.2.00.0050.01218.14
7.1.330.0000.01215.85
7.1.320.0000.01215.80
7.1.310.0090.00915.75
7.1.300.0000.01415.70
7.1.290.0070.00315.71
7.1.280.0000.01315.77
7.1.270.0030.01015.73
7.1.260.0030.01115.74
7.1.250.0000.01215.48
7.1.100.0040.00718.15
7.1.70.0000.00816.93
7.1.60.0060.01619.12
7.1.50.0130.01016.93
7.1.00.0030.07322.54
7.0.200.0030.00616.45
7.0.140.0070.06721.95
7.0.60.0130.07019.96
7.0.50.0030.06317.68
7.0.40.0170.06720.24
7.0.30.0300.05020.12
7.0.20.0170.05020.00
7.0.10.0070.05020.16
7.0.00.0200.07020.08
5.6.210.0100.08020.64
5.6.200.0100.08018.16
5.6.190.0130.04320.68
5.6.180.0170.08320.64
5.6.170.0130.04320.52
5.6.160.0030.04320.54
5.6.150.0130.07018.12
5.6.140.0130.07318.11
5.6.130.0130.07718.19
5.6.120.0030.04721.02
5.6.110.0070.09021.08
5.6.100.0030.04021.10
5.6.90.0130.08021.00
5.6.80.0130.06720.50
5.6.70.2200.04020.36
5.5.350.0400.06320.44
5.5.340.0130.06018.02
5.5.330.0100.06320.15
5.5.320.0270.04020.13
5.5.310.0330.04320.20
5.5.300.0130.06318.01
5.5.290.0070.08317.95
5.5.280.0100.08020.88
5.5.270.0170.07720.96
5.5.260.0100.08720.86
5.5.250.0030.08020.54
5.5.240.0200.04720.35
5.4.450.0530.03719.57
5.4.440.0130.03719.45
5.4.430.0230.04319.45
5.4.420.0630.03719.48
5.4.410.0600.03719.45
5.4.400.0500.03719.45
5.4.390.0170.05019.45
5.4.380.0600.07318.56
5.4.370.0330.05318.65
5.4.360.0370.06718.50
5.4.350.0430.05318.49
5.4.340.0430.03718.69
5.4.320.0060.03512.45
5.4.310.0060.04112.45
5.4.300.0090.04212.46
5.4.290.0050.04312.45
5.4.280.0060.03412.35
5.4.270.0050.03612.35
5.4.260.0040.03912.35
5.4.250.0070.05412.35
5.4.240.0020.04112.35
5.4.230.0050.03912.34
5.4.220.0050.03612.34
5.4.210.0050.03512.34
5.4.200.0070.03512.34
5.4.190.0050.03612.34
5.4.180.0030.03812.34
5.4.170.0080.03912.35
5.4.160.0060.03812.34
5.4.150.0040.03712.34
5.4.140.0020.04812.02
5.4.130.0090.03712.01
5.4.120.0060.03311.97
5.4.110.0050.04111.96
5.4.100.0040.03711.97
5.4.90.0070.03811.96
5.4.80.0050.03711.96
5.4.70.0090.03911.96
5.4.60.0030.04011.96
5.4.50.0050.04111.96
5.4.40.0100.03411.95
5.4.30.0090.04511.95
5.4.20.0070.03411.95
5.4.10.0060.04111.95
5.4.00.0060.03611.43
5.3.290.0090.04712.80
5.3.280.0070.04212.71
5.3.270.0050.04912.73
5.3.260.0070.05612.72
5.3.250.0040.04512.72
5.3.240.0040.03712.72
5.3.230.0070.04312.71
5.3.220.0070.04012.68
5.3.210.0070.03612.68
5.3.200.0050.04512.68
5.3.190.0070.04412.67
5.3.180.0100.03812.68
5.3.170.0090.04112.67
5.3.160.0090.03212.67
5.3.150.0080.04112.67
5.3.140.0030.03912.66
5.3.130.0080.03612.66
5.3.120.0070.03712.66
5.3.110.0110.03312.66
5.3.100.0100.04012.12
5.3.90.0060.04812.08
5.3.80.0060.03612.07
5.3.70.0060.03812.07
5.3.60.0080.03512.06
5.3.50.0080.04212.00
5.3.40.0080.03812.00
5.3.30.0090.04211.95
5.3.20.0080.03711.72
5.3.10.0100.03811.69
5.3.00.0140.03311.68
5.2.170.0050.0399.18
5.2.160.0090.0349.18
5.2.150.0070.0289.18
5.2.140.0050.0299.18
5.2.130.0040.0419.13
5.2.120.0040.0299.13
5.2.110.0030.0309.14
5.2.100.0050.0279.14
5.2.90.0040.0369.14
5.2.80.0070.0339.14
5.2.70.0080.0289.14
5.2.60.0050.0289.09
5.2.50.0050.0309.05
5.2.40.0050.0289.03
5.2.30.0040.0309.01
5.2.20.0060.0269.00
5.2.10.0040.0288.92
5.2.00.0060.0388.78
5.1.60.0060.0228.06
5.1.50.0060.0228.05
5.1.40.0050.0278.04
5.1.30.0070.0338.39
5.1.20.0060.0268.41
5.1.10.0040.0288.13
5.1.00.0050.0308.14
5.0.50.0060.0306.61
5.0.40.0030.0296.47
5.0.30.0030.0336.29
5.0.20.0030.0266.26
5.0.10.0030.0206.24
5.0.00.0060.0386.23
4.4.90.0030.0234.78
4.4.80.0040.0144.75
4.4.70.0070.0184.76
4.4.60.0010.0194.76
4.4.50.0060.0244.77
4.4.40.0050.0354.71
4.4.30.0030.0154.76
4.4.20.0030.0154.84
4.4.10.0030.0174.85
4.4.00.0070.0324.76
4.3.110.0080.0154.67
4.3.100.0020.0164.66
4.3.90.0060.0214.64
4.3.80.0010.0264.58
4.3.70.0050.0184.63
4.3.60.0020.0154.63
4.3.50.0050.0134.63
4.3.40.0020.0244.54
4.3.30.0030.0213.28
4.3.20.0030.0143.26
4.3.10.0030.0143.21
4.3.00.0030.02019.45

preferences:
42.58 ms | 401 KiB | 5 Q