3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'example'; $len = strlen($str); for ($i = 0; $i < $len; $i++) { var_dump($str[$i]); }

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)
8.3.40.0000.01518.71
8.3.30.0140.00018.93
8.3.20.0040.00420.21
8.3.10.0050.00221.77
8.3.00.0000.00819.01
8.2.170.0140.00722.96
8.2.160.0070.00720.35
8.2.150.0060.00324.18
8.2.140.0030.00524.66
8.2.130.0040.01126.16
8.2.120.0000.00722.09
8.2.110.0030.00522.24
8.2.100.0110.00017.72
8.2.90.0000.00819.23
8.2.80.0040.00417.97
8.2.70.0030.00717.25
8.2.60.0000.00717.93
8.2.50.0060.00318.07
8.2.40.0050.00519.88
8.2.30.0000.00817.93
8.2.20.0050.00317.69
8.2.10.0080.00017.97
8.2.00.0050.00317.67
8.1.270.0090.00024.01
8.1.260.0030.00526.35
8.1.250.0040.00428.09
8.1.240.0000.00923.84
8.1.230.0040.00819.01
8.1.220.0000.00717.74
8.1.210.0000.00918.77
8.1.200.0060.00317.10
8.1.190.0030.00517.53
8.1.180.0080.00018.10
8.1.170.0030.00618.44
8.1.160.0050.00321.99
8.1.150.0000.01018.52
8.1.140.0000.00717.41
8.1.130.0030.00317.73
8.1.120.0000.00717.39
8.1.110.0060.00317.45
8.1.100.0000.00717.43
8.1.90.0070.00017.44
8.1.80.0030.00317.41
8.1.70.0030.00317.34
8.1.60.0040.00417.48
8.1.50.0030.00517.47
8.1.40.0060.00317.45
8.1.30.0000.00817.51
8.1.20.0040.00417.46
8.1.10.0040.00417.54
8.1.00.0040.00417.51
8.0.300.0070.00020.67
8.0.290.0000.00817.18
8.0.280.0000.00718.33
8.0.270.0070.00017.20
8.0.260.0000.00717.27
8.0.250.0030.00316.88
8.0.240.0070.00016.78
8.0.230.0030.00516.81
8.0.220.0070.00016.78
8.0.210.0070.00016.78
8.0.200.0030.00316.77
8.0.190.0040.00416.89
8.0.180.0070.00016.75
8.0.170.0000.00816.72
8.0.160.0000.00716.82
8.0.150.0000.00816.80
8.0.140.0050.00316.74
8.0.130.0000.00713.21
8.0.120.0040.00416.67
8.0.110.0040.00416.79
8.0.100.0040.00416.88
8.0.90.0070.00016.65
8.0.80.0070.01016.86
8.0.70.0000.00716.70
8.0.60.0000.00716.86
8.0.50.0030.00316.75
8.0.30.0090.01017.21
8.0.20.0120.00717.40
8.0.10.0040.00416.96
8.0.00.0050.01216.76
7.4.330.0060.00015.00
7.4.320.0030.00316.45
7.4.300.0020.00516.44
7.4.290.0000.00716.44
7.4.280.0000.00716.47
7.4.270.0000.00816.43
7.4.260.0030.00316.39
7.4.250.0050.00316.35
7.4.240.0040.00416.45
7.4.230.0030.00316.32
7.4.220.0070.01116.40
7.4.210.0070.00716.49
7.4.200.0050.00216.63
7.4.190.0030.00316.49
7.4.160.0080.00816.38
7.4.150.0130.01317.40
7.4.140.0080.01217.86
7.4.130.0040.01416.42
7.4.120.0100.00716.46
7.4.110.0110.00716.35
7.4.100.0090.00916.41
7.4.90.0120.00616.67
7.4.80.0150.00319.39
7.4.70.0070.01016.55
7.4.60.0070.01116.52
7.4.50.0000.00716.24
7.4.40.0070.01022.77
7.4.30.0030.01716.54
7.4.00.0120.00515.07
7.3.330.0030.00313.07
7.3.320.0000.00613.06
7.3.310.0000.00716.19
7.3.300.0000.00716.34
7.3.290.0130.00316.23
7.3.280.0110.00616.40
7.3.270.0110.01117.40
7.3.260.0090.01016.48
7.3.250.0140.00616.38
7.3.240.0100.00716.16
7.3.230.0080.00916.54
7.3.210.0030.01416.23
7.3.200.0050.00219.39
7.3.190.0060.01116.36
7.3.180.0070.01016.34
7.3.170.0030.01216.27
7.3.160.0100.00616.38
7.3.120.0090.00714.91
7.3.110.0060.01014.90
7.3.100.0090.00014.65
7.3.90.0030.01214.52
7.3.80.0130.00314.96
7.3.70.0070.00714.73
7.3.60.0100.00714.75
7.3.50.0110.00014.98
7.3.40.0070.01014.93
7.3.30.0060.00914.78
7.3.20.0090.00616.44
7.3.10.0030.01216.81
7.3.00.0030.00916.79
7.2.330.0130.00416.35
7.2.320.0060.01416.64
7.2.310.0160.00616.47
7.2.300.0000.01716.53
7.2.290.0160.00216.57
7.2.250.0070.01314.91
7.2.240.0070.01015.11
7.2.230.0090.00614.91
7.2.220.0070.01014.98
7.2.210.0030.01314.80
7.2.200.0080.00415.09
7.2.190.0000.01414.92
7.2.180.0000.00914.79
7.2.170.0100.00014.67
7.2.80.0060.00616.67
7.2.60.0090.00616.89
7.2.00.0030.01019.33
7.1.330.0060.01015.79
7.1.320.0100.00715.88
7.1.310.0070.00715.88
7.1.300.0030.01015.91
7.1.290.0000.01115.80
7.1.280.0090.00615.82
7.1.270.0060.00315.77
7.1.260.0080.00615.84
7.1.200.0000.01115.88
7.1.100.0060.00918.40
7.1.70.0040.00416.93
7.1.60.0120.01219.46
7.1.50.0070.01317.12
7.1.00.0100.07022.56
7.0.200.0040.00416.61
7.0.140.0100.06722.19
7.0.60.0130.03719.91
7.0.50.0070.08317.88
7.0.40.0130.07320.29
7.0.30.0500.07320.04
7.0.20.0200.04320.02
7.0.10.0070.09320.13
7.0.00.0030.09020.13
5.6.280.0070.07020.77
5.6.210.0170.06320.45
5.6.200.0100.07718.18
5.6.190.0230.07320.67
5.6.180.0300.05720.43
5.6.170.0370.03720.62
5.6.160.0100.04320.43
5.6.150.0130.03018.15
5.6.140.0130.06718.14
5.6.130.0170.07718.12
5.6.120.0100.07720.99
5.6.110.0030.07321.13
5.6.100.0130.07721.04
5.6.90.0230.05721.00
5.6.80.0130.08020.40
5.5.350.0000.04020.49
5.5.340.0100.08017.91
5.5.330.0070.05320.57
5.5.320.0430.06020.28
5.5.310.0430.06020.30
5.5.300.0070.07717.89
5.5.290.0100.08317.95
5.5.280.0130.04020.65
5.5.270.0100.05720.84
5.5.260.0230.04320.79
5.5.250.0130.08020.68
5.5.240.4170.03320.27
5.4.450.0200.06719.48
5.4.440.0700.06719.46
5.4.430.0130.06719.46
5.4.420.0070.06019.45
5.4.410.0100.05719.37
5.4.400.0200.06319.05
5.4.390.0270.05719.09
5.4.380.0400.05018.70
5.4.370.0400.04318.74
5.4.360.0930.06018.53
5.4.350.0400.05318.52
5.4.340.0200.06018.59
5.4.320.0100.03412.46
5.4.310.0080.03612.45
5.4.300.0090.03412.45
5.4.290.0150.04812.44
5.4.280.0130.04712.34
5.4.270.0260.08612.34
5.4.260.0130.04612.33
5.4.250.0140.04812.33
5.4.240.0040.05412.33
5.4.230.0110.04712.33
5.4.220.0090.04812.32
5.4.210.0090.04612.32
5.4.200.0100.04612.33
5.4.190.0080.05112.32
5.4.180.0100.05912.32
5.4.170.0100.05212.34
5.4.160.0130.03712.33
5.4.150.0050.04012.32
5.4.140.0090.04112.01
5.4.130.0120.04112.00
5.4.120.0110.04711.96
5.4.110.0070.05211.95
5.4.100.0060.04611.95
5.4.90.0080.04811.95
5.4.80.0120.04811.95
5.4.70.0090.04911.95
5.4.60.0090.04411.94
5.4.50.0110.04911.94
5.4.40.0120.04511.93
5.4.30.0110.04911.93
5.4.20.0110.04711.93
5.4.10.0110.04811.93
5.4.00.0090.04711.42
5.3.290.0120.04512.80
5.3.280.0100.05212.71
5.3.270.0100.05012.73
5.3.260.0100.05112.72
5.3.250.0070.05412.72
5.3.240.0110.05612.72
5.3.230.0090.04812.71
5.3.220.0110.04912.68
5.3.210.0090.05712.68
5.3.200.0090.03712.68
5.3.190.0060.04912.68
5.3.180.0090.05412.67
5.3.170.0060.05212.66
5.3.160.0030.04812.67
5.3.150.0120.04412.67
5.3.140.0060.04912.66
5.3.130.0070.04812.66
5.3.120.0160.05612.65
5.3.110.0110.07512.66
5.3.100.0180.05812.11
5.3.90.0130.05912.08
5.3.80.0100.05012.08
5.3.70.0040.05512.07
5.3.60.0080.05212.06
5.3.50.0080.05112.00
5.3.40.0060.05212.00
5.3.30.0070.05211.94
5.3.20.0080.05011.72
5.3.10.0070.05711.69
5.3.00.0080.05111.68
5.2.170.0070.0439.18
5.2.160.0070.0409.18
5.2.150.0100.0489.17
5.2.140.0070.0449.18
5.2.130.0090.0419.13
5.2.120.0090.0439.13
5.2.110.0100.0329.14
5.2.100.0100.0349.14
5.2.90.0110.0309.14
5.2.80.0060.0379.13
5.2.70.0100.0319.14
5.2.60.0070.0439.09
5.2.50.0070.0339.05
5.2.40.0050.0319.04
5.2.30.0040.0329.01
5.2.20.0070.0359.00
5.2.10.0060.0378.91
5.2.00.0060.0328.78
5.1.60.0070.0318.06
5.1.50.0060.0468.06
5.1.40.0070.0318.04
5.1.30.0060.0418.39
5.1.20.0080.0408.41
5.1.10.0040.0378.13
5.1.00.0060.0348.14
5.0.50.0060.0516.62
5.0.40.0060.0326.48
5.0.30.0040.0686.29
5.0.20.0100.0526.26
5.0.10.0080.0476.24
5.0.00.0060.0476.23
4.4.90.0050.0244.77
4.4.80.0040.0254.76
4.4.70.0030.0794.75
4.4.60.0050.0264.75
4.4.50.0050.0244.77
4.4.40.0060.0364.70
4.4.30.0090.0614.76
4.4.20.0050.0264.84
4.4.10.0040.0304.84
4.4.00.0140.0684.76
4.3.110.0100.0294.66
4.3.100.0030.0244.66
4.3.90.0040.0234.64
4.3.80.0070.0314.58
4.3.70.0030.0244.63
4.3.60.0150.0384.63
4.3.50.0170.0384.63
4.3.40.0020.0464.54
4.3.30.0050.0213.29
4.3.20.0040.0223.26
4.3.10.0000.0253.21
4.3.00.0170.0178.52

preferences:
50.6 ms | 400 KiB | 5 Q