3v4l.org

run code in 300+ PHP versions simultaneously
<?php function returnFirst($rsrnum) { $char = $rsrnum[0]; return ctype_alpha($char) ? strtolower($char) : '%23'; } echo returnFirst('ADSASTEADS')."\n"; echo returnFirst('{column_1[1]')."\n"; echo returnFirst('3SASDAsd')."\n";

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)
8.3.60.0110.00416.38
8.3.50.0110.00921.94
8.3.40.0040.01118.84
8.3.30.0070.00719.21
8.3.20.0040.00420.34
8.3.10.0050.00323.53
8.3.00.0080.00020.89
8.2.180.0120.00318.52
8.2.170.0090.00622.96
8.2.160.0100.00720.47
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0070.00022.21
8.2.110.0040.00422.08
8.2.100.0060.00617.72
8.2.90.0040.00419.22
8.2.80.0000.00817.97
8.2.70.0040.00417.75
8.2.60.0030.00518.05
8.2.50.0060.00318.07
8.2.40.0090.00020.06
8.2.30.0060.00318.18
8.2.20.0080.00017.74
8.2.10.0000.00717.98
8.2.00.0040.00417.58
8.1.280.0120.00325.92
8.1.270.0080.00022.06
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00723.84
8.1.230.0040.00719.00
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0000.00917.35
8.1.190.0060.00317.10
8.1.180.0030.00618.10
8.1.170.0060.00318.50
8.1.160.0050.00321.92
8.1.150.0030.00518.64
8.1.140.0000.00717.36
8.1.130.0050.00217.79
8.1.120.0000.00717.36
8.1.110.0000.00717.36
8.1.100.0040.00417.43
8.1.90.0080.00017.42
8.1.80.0070.00017.40
8.1.70.0030.00517.35
8.1.60.0090.00017.57
8.1.50.0040.00417.50
8.1.40.0070.00317.61
8.1.30.0000.01017.67
8.1.20.0040.00417.51
8.1.10.0000.00717.44
8.1.00.0000.00817.48
8.0.300.0040.00418.77
8.0.290.0000.00717.05
8.0.280.0030.00318.38
8.0.270.0030.00317.20
8.0.260.0030.00317.13
8.0.250.0030.00316.84
8.0.240.0000.00616.83
8.0.230.0030.00516.81
8.0.220.0030.00316.78
8.0.210.0000.00716.86
8.0.200.0080.00016.82
8.0.190.0000.00716.86
8.0.180.0050.00316.81
8.0.170.0080.00016.94
8.0.160.0000.00716.95
8.0.150.0030.00516.87
8.0.140.0070.00016.84
8.0.130.0000.00513.36
8.0.120.0030.00516.89
8.0.110.0080.00016.93
8.0.100.0000.00716.72
8.0.90.0040.00416.75
8.0.80.0040.01216.93
8.0.70.0050.00316.84
8.0.60.0000.00916.64
8.0.50.0040.00416.82
8.0.30.0090.01116.82
8.0.20.0120.00817.40
8.0.10.0040.00416.79
8.0.00.0090.01116.71
7.4.330.0000.00615.00
7.4.320.0000.00616.44
7.4.300.0000.00616.50
7.4.290.0000.00716.49
7.4.280.0050.00316.58
7.4.270.0030.00316.46
7.4.260.0070.00016.38
7.4.250.0000.00716.52
7.4.240.0000.00716.57
7.4.230.0030.00316.53
7.4.220.0030.01416.70
7.4.210.0060.00916.50
7.4.200.0040.00416.63
7.4.190.0070.00016.39
7.4.160.0070.01416.49
7.4.150.0070.01017.40
7.4.140.0070.01117.86
7.4.130.0090.00716.46
7.4.120.0100.00916.60
7.4.110.0150.00316.36
7.4.100.0120.01316.48
7.4.90.0100.00716.69
7.4.80.0090.00919.39
7.4.70.0080.00816.37
7.4.60.0130.00316.46
7.4.50.0040.00016.38
7.4.40.0090.00616.49
7.4.30.0030.01316.43
7.4.00.0040.01215.05
7.3.330.0030.00313.31
7.3.320.0030.00313.28
7.3.310.0030.00316.28
7.3.300.0030.00316.23
7.3.290.0140.01116.25
7.3.280.0130.00516.20
7.3.270.0180.00017.40
7.3.260.0060.01016.41
7.3.250.0120.00516.50
7.3.240.0130.00616.37
7.3.230.0100.00616.45
7.3.210.0080.00816.42
7.3.200.0100.01019.39
7.3.190.0090.00916.55
7.3.180.0080.00816.18
7.3.170.0000.01516.30
7.3.160.0140.00716.36
7.3.120.0100.00014.61
7.2.330.0120.01116.53
7.2.320.0060.01616.39
7.2.310.0130.00316.29
7.2.300.0050.01216.37
7.2.290.0100.00716.70
7.2.00.0070.00719.39
7.1.100.0000.01017.92
7.1.70.0040.01217.22
7.1.60.0160.01019.46
7.1.50.0130.01016.70
7.1.00.0030.07322.54
7.0.200.0100.00016.75
7.0.140.0030.07322.21
7.0.60.0070.08319.98
7.0.50.0100.04317.86
7.0.40.0130.08319.96
7.0.30.0300.07720.23
7.0.20.0230.05720.30
7.0.10.0130.05320.22
7.0.00.0130.06320.18
5.6.280.0000.07721.15
5.6.210.0130.07320.75
5.6.200.0130.08318.29
5.6.190.0130.08320.48
5.6.180.0170.07320.33
5.6.170.0200.05720.62
5.6.160.0030.08020.55
5.6.150.0030.03718.28
5.6.140.0100.05318.20
5.6.130.0030.06018.17
5.6.120.0030.04321.01
5.6.110.0070.08321.12
5.6.100.0070.08721.00
5.6.90.0030.05720.98
5.6.80.0130.06320.54
5.5.350.4070.04720.52
5.5.340.0130.07717.99
5.5.330.0170.04320.57
5.5.320.0130.04720.25
5.5.310.0300.05720.31
5.5.300.0030.04018.07
5.5.290.0130.08017.98
5.5.280.0070.05320.80
5.5.270.0070.03720.80
5.5.260.0000.09020.86
5.5.250.0030.06320.50
5.5.240.0000.08320.27
5.4.450.0200.06719.63
5.4.440.0330.07719.62
5.4.430.0170.05019.36
5.4.420.0430.06319.29
5.4.410.0330.04719.34
5.4.400.0270.06319.17
5.4.390.0300.05019.07
5.4.380.0100.05718.84
5.4.370.0100.05318.72
5.4.360.0100.05318.82
5.4.350.0130.05318.53
5.4.340.0070.06318.79
5.4.320.0070.03812.50
5.4.310.0030.04012.50
5.4.300.0070.04012.50
5.4.290.0110.04212.50
5.4.280.0060.03912.39
5.4.270.0120.06212.40
5.4.260.0140.07212.40
5.4.250.0100.05412.40
5.4.240.0070.04512.39
5.4.230.0150.06612.39
5.4.220.0100.03712.39
5.4.210.0100.04012.39
5.4.200.0130.09012.39
5.4.190.0110.05012.39
5.4.180.0230.06312.39
5.4.170.0080.05412.39
5.4.160.0050.04012.39
5.4.150.0090.03612.39
5.4.140.0070.04012.07
5.4.130.0070.04112.05
5.4.120.0080.03712.01
5.4.110.0060.03912.01
5.4.100.0090.04112.01
5.4.90.0120.05112.01
5.4.80.0060.04712.01
5.4.70.0210.07012.01
5.4.60.0080.03812.01
5.4.50.0090.06312.01
5.4.40.0110.04812.00
5.4.30.0120.04711.99
5.4.20.0080.05411.99
5.4.10.0180.06111.99
5.4.00.0110.07611.48
5.3.290.0060.04112.80
5.3.280.0090.05712.71
5.3.270.0200.07812.72
5.3.260.0270.07912.72
5.3.250.0420.11112.72
5.3.240.0260.09212.72
5.3.230.0130.06912.71
5.3.220.0210.06912.68
5.3.210.0300.06712.68
5.3.200.0220.09212.68
5.3.190.0100.07112.68
5.3.180.0110.03712.68
5.3.170.0070.03712.67
5.3.160.0090.03912.68
5.3.150.0070.04212.68
5.3.140.0120.05012.66
5.3.130.0120.05212.65
5.3.120.0140.04912.65
5.3.110.0140.04912.66
5.3.100.0090.04912.12
5.3.90.0100.05212.10
5.3.80.0140.05212.09
5.3.70.0090.04812.09
5.3.60.0100.04712.07
5.3.50.0070.04912.02
5.3.40.0110.04312.02
5.3.30.0090.03311.97
5.3.20.0130.03011.76
5.3.10.0080.04711.73
5.3.00.0100.04811.71
5.2.170.0250.0669.22
5.2.160.0080.0639.22
5.2.150.0070.0299.21
5.2.140.0070.0319.21
5.2.130.0030.0329.17
5.2.120.0070.0349.18
5.2.110.0100.0329.18
5.2.100.0040.0449.17
5.2.90.0100.0389.17
5.2.80.0080.0399.16
5.2.70.0150.0639.17
5.2.60.0120.0619.13
5.2.50.0090.0519.09
5.2.40.0140.0429.07
5.2.30.0090.0419.05
5.2.20.0040.0339.03
5.2.10.0060.0298.94
5.2.00.0080.0288.80
5.1.60.0060.0258.09
5.1.50.0050.0278.08
5.1.40.0070.0248.06
5.1.30.0040.0308.41
5.1.20.0060.0288.43
5.1.10.0060.0278.16
5.1.00.0090.0278.16
5.0.50.0050.0296.64
5.0.40.0120.0306.50
5.0.30.0100.0466.31
5.0.20.0090.0196.27
5.0.10.0060.0316.25
5.0.00.0040.0486.25
4.4.90.0060.0234.78
4.4.80.0070.0204.75
4.4.70.0050.0224.75
4.4.60.0050.0154.75
4.4.50.0020.0174.77
4.4.40.0020.0304.71
4.4.30.0080.0274.76
4.4.20.0040.0264.84
4.4.10.0030.0264.84
4.4.00.0030.0344.76
4.3.110.0030.0234.66
4.3.100.0060.0294.67
4.3.90.0060.0294.63
4.3.80.0040.0324.58
4.3.70.0050.0194.63
4.3.60.0060.0164.63
4.3.50.0050.0224.62
4.3.40.0020.0414.54
4.3.30.0040.0383.30
4.3.20.0040.0223.28
4.3.10.0040.0223.24
4.3.00.0030.0237.15

preferences:
39.04 ms | 401 KiB | 5 Q