3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = utf8_encode( "KS and this isn’t a test of symbols ‘ and I still don’t understan ‘causes"); var_dump($str); var_dump(utf8_decode($str));

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)
8.3.60.0040.01818.43
8.3.50.0200.00821.91
8.3.40.0100.00718.72
8.3.30.0140.00318.92
8.3.20.0040.00420.21
8.3.10.0040.00422.00
8.3.00.0070.00022.39
8.2.180.0160.00616.63
8.2.170.0030.01222.96
8.2.160.0070.00720.86
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00019.38
8.2.110.0060.00321.83
8.2.100.0040.00817.78
8.2.90.0050.00219.09
8.2.80.0050.00317.97
8.2.70.0040.00417.38
8.2.60.0050.00317.55
8.2.50.0000.00818.07
8.2.40.0070.00018.22
8.2.30.0070.00017.98
8.2.20.0070.00017.64
8.2.10.0000.00717.54
8.2.00.0030.00617.54
8.1.280.0100.00725.92
8.1.270.0000.00822.19
8.1.260.0050.00326.35
8.1.250.0080.00028.09
8.1.240.0070.00323.95
8.1.230.0100.00518.96
8.1.220.0040.00417.74
8.1.210.0030.00518.77
8.1.200.0030.00617.22
8.1.190.0060.00317.51
8.1.180.0050.00518.10
8.1.170.0070.00318.57
8.1.160.0000.00821.80
8.1.150.0040.00418.55
8.1.140.0070.00317.28
8.1.130.0030.00317.84
8.1.120.0030.00517.38
8.1.110.0040.00417.27
8.1.100.0000.00717.34
8.1.90.0000.00717.21
8.1.80.0000.00817.30
8.1.70.0040.00417.32
8.1.60.0000.00917.48
8.1.50.0020.00517.39
8.1.40.0000.00717.43
8.1.30.0090.00317.61
8.1.20.0000.00817.57
8.1.10.0040.00417.35
8.1.00.0060.00317.25
8.0.300.0030.00318.77
8.0.290.0070.00017.15
8.0.280.0070.00018.37
8.0.270.0070.00017.08
8.0.260.0030.00516.66
8.0.250.0030.00316.90
8.0.240.0050.00316.88
8.0.230.0030.00316.88
8.0.220.0030.00316.80
8.0.210.0040.00416.80
8.0.200.0000.00716.74
8.0.190.0030.00616.92
8.0.180.0000.00716.85
8.0.170.0050.00316.82
8.0.160.0060.00316.91
8.0.150.0040.00416.79
8.0.140.0050.00216.75
8.0.130.0000.00613.28
8.0.120.0050.00316.81
8.0.110.0070.00016.78
8.0.100.0080.00016.81
8.0.90.0050.00316.71
8.0.80.0090.00616.75
8.0.70.0020.00516.92
8.0.60.0080.00016.80
8.0.50.0000.00816.87
8.0.30.0100.01216.91
8.0.20.0090.00917.40
8.0.10.0030.00617.00
8.0.00.0080.00916.61
7.4.330.0030.00315.00
7.4.320.0030.00316.53
7.4.300.0030.00316.43
7.4.290.0070.00016.53
7.4.280.0050.00316.41
7.4.270.0040.00416.40
7.4.260.0030.00316.41
7.4.250.0040.00416.49
7.4.240.0020.00516.48
7.4.230.0030.00316.27
7.4.220.0090.00916.51
7.4.210.0060.01016.51
7.4.200.0030.00316.59
7.4.190.0030.00316.60
7.4.160.0120.00816.45
7.4.150.0100.01017.40
7.4.140.0080.01217.86
7.4.130.0100.00916.45
7.4.120.0110.00716.41
7.4.110.0070.01416.45
7.4.100.0090.00916.49
7.4.90.0120.00816.39
7.4.80.0120.01219.39
7.4.70.0030.01316.41
7.4.60.0090.01216.46
7.4.50.0090.00016.48
7.4.40.0100.00722.77
7.4.30.0070.01416.25
7.4.00.0100.00314.99
7.3.330.0030.00313.07
7.3.320.0030.00313.02
7.3.310.0080.00016.27
7.3.300.0040.00416.11
7.3.290.0120.00816.04
7.3.280.0110.00716.10
7.3.270.0170.00317.40
7.3.260.0090.00816.45
7.3.250.0120.01016.19
7.3.240.0140.00316.49
7.3.230.0110.00616.39
7.3.210.0060.01016.01
7.3.200.0140.00319.39
7.3.190.0030.01416.23
7.3.180.0100.00516.45
7.3.170.0090.00616.27
7.3.160.0120.00416.29
7.3.120.0120.00014.70
7.2.330.0060.01216.28
7.2.320.0120.00916.21
7.2.310.0120.00616.22
7.2.300.0030.01316.54
7.2.290.0090.01216.20
7.2.60.0110.00016.60
7.1.200.0060.00315.76
7.1.70.0000.00816.97
7.1.60.0040.00819.82
7.1.50.0120.01216.57
7.1.00.0030.07722.35
7.0.200.0040.00416.39
7.0.140.0000.07721.94
7.0.60.0070.08019.86
7.0.50.0030.05717.82
7.0.40.0030.08720.09
7.0.30.0300.06020.09
7.0.20.0270.05320.32
7.0.10.0170.05720.16
7.0.00.0070.05719.99
5.6.280.0070.07020.88
5.6.210.0000.04320.52
5.6.200.0070.08718.11
5.6.190.0100.05720.43
5.6.180.3270.04320.45
5.6.170.0170.04720.50
5.6.160.0000.05720.52
5.6.150.0070.05718.11
5.6.140.0100.07718.17
5.6.130.0000.04318.11
5.6.120.0100.05721.11
5.6.110.0130.08020.99
5.6.100.0130.07021.01
5.6.90.0070.08721.11
5.6.80.0070.06720.36
5.6.70.4070.03020.36
5.5.350.0030.08320.38
5.5.340.0030.05718.00
5.5.330.0130.08020.37
5.5.320.0330.04020.29
5.5.310.0200.05720.29
5.5.300.0170.07017.95
5.5.290.0000.05718.03
5.5.280.0000.04720.79
5.5.270.0000.06720.91
5.5.260.0070.08320.75
5.5.250.0170.07720.68
5.5.240.0000.07720.26
5.4.450.0400.04719.57
5.4.440.0800.04319.36
5.4.430.0330.03719.57
5.4.420.0200.04319.41
5.4.410.0170.05718.91
5.4.400.0170.04718.72
5.4.390.0070.05318.53
5.4.380.0170.05018.50
5.4.370.0230.05718.77
5.4.360.0200.05718.70
5.4.350.0230.05318.48
5.4.340.0200.05318.70
5.4.320.0050.03712.45
5.4.310.0060.04012.45
5.4.300.0060.03612.46
5.4.290.0050.03812.45
5.4.280.0110.02912.35
5.4.270.0050.03612.31
5.4.260.0030.04012.32
5.4.250.0060.03812.31
5.4.240.0090.03312.32
5.4.230.0060.03812.31
5.4.220.0050.03712.30
5.4.210.0040.04312.31
5.4.200.0090.03512.31
5.4.190.0040.03812.30
5.4.180.0060.03612.30
5.4.170.0040.03812.32
5.4.160.0050.03712.31
5.4.150.0090.03312.30
5.4.140.0070.03511.98
5.4.130.0040.03911.98
5.4.120.0080.04311.93
5.4.110.0070.03311.93
5.4.100.0040.03611.93
5.4.90.0080.03411.93
5.4.80.0050.03711.93
5.4.70.0060.04211.92
5.4.60.0040.03611.93
5.4.50.0050.03611.93
5.4.40.0080.03211.91
5.4.30.0080.03211.91
5.4.20.0050.03511.91
5.4.10.0040.03611.91
5.4.00.0060.03511.39
5.3.290.0070.03812.80
5.3.280.0060.03812.71
5.3.270.0060.04112.72
5.3.260.0060.04012.72
5.3.250.0100.04212.72
5.3.240.0050.04012.72
5.3.230.0040.03912.71
5.3.220.0060.03712.68
5.3.210.0060.04412.68
5.3.200.0060.03712.68
5.3.190.0050.03812.67
5.3.180.0070.04212.67
5.3.170.0100.03312.67
5.3.160.0100.03312.67
5.3.150.0040.04112.68
5.3.140.0070.03512.66
5.3.130.0070.03712.66
5.3.120.0070.04312.66
5.3.110.0070.03912.66
5.3.100.0050.03912.12
5.3.90.0040.04712.08
5.3.80.0060.03712.07
5.3.70.0050.03712.08
5.3.60.0050.03812.06
5.3.50.0050.03812.00
5.3.40.0040.03912.00
5.3.30.0050.03611.93
5.3.20.0090.03211.70
5.3.10.0060.03511.66
5.3.00.0040.03811.64
5.2.170.0060.0349.15
5.2.160.0070.0359.14
5.2.150.0040.0319.15
5.2.140.0100.0359.14
5.2.130.0040.0299.10
5.2.120.0030.0339.11
5.2.110.0070.0289.11
5.2.100.0040.0299.11
5.2.90.0030.0309.11
5.2.80.0040.0319.09
5.2.70.0040.0329.10
5.2.60.0030.0329.05
5.2.50.0030.0319.02
5.2.40.0060.0369.00
5.2.30.0090.0288.97
5.2.20.0050.0288.96
5.2.10.0050.0288.89
5.2.00.0030.0378.75
5.1.60.0030.0258.03
5.1.50.0040.0278.03
5.1.40.0050.0248.02
5.1.30.0070.0248.36
5.1.20.0070.0248.39
5.1.10.0030.0278.11
5.1.00.0040.0258.11
5.0.50.0040.0196.59
5.0.40.0030.0206.45
5.0.30.0080.0266.27
5.0.20.0040.0246.24
5.0.10.0040.0206.21
5.0.00.0050.0336.20
4.4.90.0030.0154.78
4.4.80.0060.0134.75
4.4.70.0020.0174.76
4.4.60.0030.0164.75
4.4.50.0060.0204.77
4.4.40.0040.0254.71
4.4.30.0050.0134.75
4.4.20.0030.0154.85
4.4.10.0030.0154.85
4.4.00.0020.0274.76
4.3.110.0030.0174.67
4.3.100.0010.0174.66
4.3.90.0040.0134.64
4.3.80.0030.0244.58
4.3.70.0020.0174.63
4.3.60.0030.0154.63
4.3.50.0030.0144.63
4.3.40.0070.0254.54
4.3.30.0000.0183.27
4.3.20.0000.0173.25
4.3.10.0040.0193.21
4.3.00.0070.02013.28

preferences:
39.35 ms | 401 KiB | 5 Q