3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '12345'; $c = ''; for($i = 0; $a{$i} != ''; $i++) { echo 1; $c = $a{$i} . $c; } var_dump($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)
8.3.40.0070.01018.48
8.3.30.0030.01018.88
8.3.20.0000.00820.36
8.3.10.0000.00820.45
8.3.00.0040.00419.25
8.2.170.0110.00422.96
8.2.160.0100.00720.25
8.2.150.0050.00224.18
8.2.140.0080.00824.66
8.2.130.0070.00026.16
8.2.120.0070.00022.22
8.2.110.0080.00022.13
8.2.100.0040.01117.42
8.2.90.0040.00419.05
8.2.80.0050.00317.97
8.2.70.0050.00317.25
8.2.60.0040.00417.68
8.2.50.0000.00918.07
8.2.40.0040.00417.96
8.2.30.0090.00019.41
8.2.20.0000.00717.51
8.2.10.0050.00317.93
8.2.00.0040.00417.60
8.1.270.0040.00422.05
8.1.260.0080.00026.35
8.1.250.0080.00028.09
8.1.240.0100.00023.85
8.1.230.0110.00019.16
8.1.220.0040.00417.74
8.1.210.0000.00918.77
8.1.200.0030.01017.10
8.1.190.0090.00017.10
8.1.180.0040.00418.10
8.1.170.0040.00418.66
8.1.160.0030.00521.94
8.1.150.0040.00418.71
8.1.140.0050.00217.28
8.1.130.0000.00717.80
8.1.120.0040.00417.30
8.1.110.0020.00517.33
8.1.100.0040.00417.34
8.1.90.0050.00317.33
8.1.80.0000.00717.15
8.1.70.0000.00717.25
8.1.60.0080.00017.46
8.1.50.0000.00717.36
8.1.40.0030.00617.33
8.1.30.0050.00317.41
8.1.20.0070.00017.52
8.1.10.0030.00617.30
8.1.00.0000.00717.36
8.0.300.0040.00418.77
8.0.290.0050.00216.63
8.0.280.0040.00418.26
8.0.270.0030.00317.12
8.0.260.0000.00817.14
8.0.250.0030.00316.78
8.0.240.0000.00816.82
8.0.230.0000.00716.84
8.0.220.0000.00616.75
8.0.210.0000.00716.80
8.0.200.0000.00616.75
8.0.190.0070.00016.73
8.0.180.0000.00816.83
8.0.170.0040.00416.88
8.0.160.0040.00416.69
8.0.150.0000.00716.79
8.0.140.0070.00016.82
8.0.130.0030.00313.25
8.0.120.0000.00716.79
8.0.110.0040.00416.84
8.0.100.0040.00416.60
8.0.90.0000.00716.89
8.0.80.0060.01616.79
8.0.70.0040.00416.68
8.0.60.0040.00416.63
8.0.50.0050.00316.64
8.0.30.0050.01416.94
8.0.20.0100.01217.40
8.0.10.0000.00716.83
8.0.00.0060.01116.71
7.4.330.0050.00015.09
7.4.320.0070.00016.41
7.4.300.0060.00016.60
7.4.290.0000.00616.54
7.4.280.0000.00716.54
7.4.270.0070.00016.66
7.4.260.0040.00416.61
7.4.250.0050.00316.46
7.4.240.0010.00716.55
7.4.230.0000.00816.59
7.4.220.0000.01716.43
7.4.210.0030.01116.65
7.4.200.0050.00216.39
7.4.160.0040.01216.62
7.4.150.0040.01417.40
7.4.140.0070.01017.86
7.4.130.0110.00616.56
7.4.120.0030.01416.58
7.4.110.0110.00716.66
7.4.100.0110.01016.52
7.4.90.0120.00616.70
7.4.80.0060.01219.39
7.4.70.0080.00816.50
7.4.60.0150.00916.37
7.4.50.0040.00416.30
7.4.40.0070.01016.57
7.4.30.0120.00616.55
7.4.00.0040.01114.70
7.3.330.0000.00813.07
7.3.320.0000.00513.18
7.3.310.0070.00016.18
7.3.300.0000.00816.34
7.3.290.0080.00816.33
7.3.280.0090.00916.31
7.3.270.0120.01017.40
7.3.260.0100.00716.43
7.3.250.0090.00916.50
7.3.240.0120.00616.40
7.3.230.0070.01116.41
7.3.210.0130.00716.57
7.3.200.0120.00419.39
7.3.190.0030.01416.54
7.3.180.0170.00016.40
7.3.170.0030.01216.38
7.3.160.0160.00016.46
7.2.330.0120.00616.45
7.2.320.0110.01216.80
7.2.310.0120.00916.65
7.2.300.0060.01016.68
7.2.290.0090.00916.64
7.2.00.0060.00919.59
7.1.100.0070.00717.82
7.1.70.0090.00017.22
7.1.60.0130.01019.12
7.1.50.0090.00316.71
7.1.00.0000.07722.46
7.0.200.0030.00616.75
7.0.140.0070.07021.97
7.0.60.0200.06720.05
7.0.50.0100.06017.85
7.0.40.0070.04720.20
7.0.30.0270.04320.18
7.0.20.0230.08020.13
7.0.10.0230.04020.16
7.0.00.0030.06019.99
5.6.280.0030.07321.06
5.6.210.0030.06320.45
5.6.200.0100.07018.08
5.6.190.0100.08320.60
5.6.180.0300.03720.33
5.6.170.0430.02320.54
5.6.160.0070.08720.48
5.6.150.0030.08718.22
5.6.140.0070.06718.13
5.6.130.0100.04718.18
5.6.120.0030.05321.05
5.6.110.0030.05720.98
5.6.100.0200.07321.01
5.6.90.0070.08720.88
5.6.80.0030.07720.50
5.6.70.3600.03020.36
5.5.350.0000.08720.45
5.5.340.0030.09017.92
5.5.330.0100.08020.25
5.5.320.0330.04020.17
5.5.310.0230.07720.34
5.5.300.0030.08018.02
5.5.290.0070.08017.94
5.5.280.0130.04720.84
5.5.270.0130.08320.79
5.5.260.0130.08720.66
5.5.250.0070.08020.59
5.5.240.0030.08720.25
5.4.450.0500.04019.49
5.4.440.0670.04019.57
5.4.430.0330.05319.45
5.4.420.0830.04319.45
5.4.410.0230.03719.45
5.4.400.0330.04019.45
5.4.390.0200.03719.45
5.4.380.0300.05718.61
5.4.370.0500.06718.56
5.4.360.0230.06318.53
5.4.350.0270.05718.68
5.4.340.0430.06718.46
5.4.320.0060.04412.46
5.4.310.0060.04312.45
5.4.300.0040.03812.45
5.4.290.0040.03912.45
5.4.280.0060.03412.35
5.4.270.0050.03612.35
5.4.260.0080.03412.35
5.4.250.0030.03912.35
5.4.240.0070.03412.35
5.4.230.0070.03812.34
5.4.220.0040.03612.34
5.4.210.0040.03612.34
5.4.200.0070.03512.34
5.4.190.0060.03612.34
5.4.180.0070.03312.34
5.4.170.0070.03512.35
5.4.160.0060.03412.35
5.4.150.0050.03512.34
5.4.140.0070.03412.02
5.4.130.0060.03312.01
5.4.120.0070.03211.97
5.4.110.0040.04811.97
5.4.100.0050.04311.97
5.4.90.0070.04011.96
5.4.80.0060.04211.96
5.4.70.0040.03411.96
5.4.60.0050.03411.96
5.4.50.0030.03611.96
5.4.40.0060.03311.95
5.4.30.0030.03611.95
5.4.20.0050.03411.95
5.4.10.0030.03611.95
5.4.00.0090.03811.43
5.3.290.0060.03712.80
5.3.280.0060.03712.71
5.3.270.0040.03912.72
5.3.260.0080.03512.72
5.3.250.0070.03512.72
5.3.240.0070.03412.72
5.3.230.0030.04712.70
5.3.220.0050.03612.68
5.3.210.0090.04412.68
5.3.200.0090.05012.68
5.3.190.0050.03712.68
5.3.180.0080.04212.67
5.3.170.0040.03912.67
5.3.160.0070.03812.67
5.3.150.0060.03512.67
5.3.140.0070.03912.66
5.3.130.0070.04312.66
5.3.120.0040.03912.65
5.3.110.0040.04912.66
5.3.100.0020.04012.12
5.3.90.0080.03612.09
5.3.80.0050.04012.08
5.3.70.0050.03912.07
5.3.60.0050.04612.07
5.3.50.0060.03412.00
5.3.40.0060.03612.00
5.3.30.0040.03511.94
5.3.20.0070.04011.72
5.3.10.0060.03211.69
5.3.00.0060.03411.68
5.2.170.0050.0349.18
5.2.160.0050.0299.18
5.2.150.0070.0359.18
5.2.140.0040.0319.18
5.2.130.0050.0269.13
5.2.120.0030.0289.13
5.2.110.0010.0339.14
5.2.100.0040.0349.14
5.2.90.0060.0349.14
5.2.80.0010.0349.13
5.2.70.0040.0379.13
5.2.60.0050.0389.09
5.2.50.0060.0409.06
5.2.40.0040.0319.04
5.2.30.0030.0329.01
5.2.20.0050.0288.99
5.2.10.0020.0308.93
5.2.00.0030.0308.79
5.1.60.0060.0218.07
5.1.50.0020.0268.07
5.1.40.0030.0258.06
5.1.30.0040.0258.40
5.1.20.0040.0268.42
5.1.10.0040.0258.15
5.1.00.0050.0248.15
5.0.50.0020.0236.63
5.0.40.0040.0256.49
5.0.30.0050.0326.30
5.0.20.0050.0236.27
5.0.10.0020.0236.25
5.0.00.0010.0336.24
4.4.90.0030.0154.78
4.4.80.0020.0154.75
4.4.70.0010.0174.76
4.4.60.0010.0164.76
4.4.50.0010.0164.77
4.4.40.0030.0324.71
4.4.30.0020.0154.76
4.4.20.0030.0234.85
4.4.10.0020.0154.85
4.4.00.0010.0274.76
4.3.110.0040.0144.67
4.3.100.0020.0154.66
4.3.90.0040.0214.64
4.3.80.0020.0314.58
4.3.70.0030.0134.63
4.3.60.0020.0144.63
4.3.50.0020.0224.63
4.3.40.0050.0334.54
4.3.30.0010.0163.30
4.3.20.0040.0133.27
4.3.10.0000.0173.23
4.3.00.0000.02019.45

preferences:
45.2 ms | 400 KiB | 5 Q