3v4l.org

run code in 300+ PHP versions simultaneously
<?php $z1 = "abc"; $out = ""; for ($i = 0; $i < strlen($z1); $i++) { $out[$i] = $z1[$i]; // $out = $out.$z1[$i]; } print $out;

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)
8.3.40.0060.01218.89
8.3.30.0110.00418.76
8.3.20.0080.00018.91
8.3.10.0060.00320.71
8.3.00.0040.00419.29
8.2.170.0110.00422.96
8.2.160.0120.00618.96
8.2.150.0040.00425.66
8.2.140.0090.00624.66
8.2.130.0040.00426.16
8.2.120.0030.00620.63
8.2.110.0040.00720.91
8.2.100.0040.00718.03
8.2.90.0000.00919.43
8.2.80.0000.00719.32
8.2.70.0030.00517.62
8.2.60.0050.00317.93
8.2.50.0030.00518.07
8.2.40.0050.00318.17
8.2.30.0060.00318.00
8.2.20.0060.00319.34
8.2.10.0070.00017.61
8.2.00.0000.00717.67
8.1.270.0040.00723.99
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00322.66
8.1.230.0060.00621.03
8.1.220.0040.00417.78
8.1.210.0040.00418.96
8.1.200.0030.00617.35
8.1.190.0070.00017.66
8.1.180.0030.00618.10
8.1.170.0000.00718.76
8.1.160.0000.00718.84
8.1.150.0000.00718.69
8.1.140.0040.00417.41
8.1.130.0070.00017.40
8.1.120.0040.00417.50
8.1.110.0080.00017.33
8.1.100.0030.00317.48
8.1.90.0000.00717.37
8.1.80.0040.00317.35
8.1.70.0070.00417.43
8.1.60.0000.00717.63
8.1.50.0040.00417.44
8.1.40.0020.00517.43
8.1.30.0020.00517.62
8.1.20.0000.00817.65
8.1.10.0080.00017.45
8.1.00.0030.00617.37
8.0.300.0030.00319.98
8.0.290.0030.00616.63
8.0.280.0000.00718.47
8.0.270.0030.00317.18
8.0.260.0080.00016.73
8.0.250.0000.00716.84
8.0.240.0070.00016.95
8.0.230.0000.00716.93
8.0.220.0000.00716.83
8.0.210.0000.00716.75
8.0.200.0030.00316.84
8.0.190.0040.00516.83
8.0.180.0000.00716.93
8.0.170.0000.00916.74
8.0.160.0000.00716.91
8.0.150.0030.00516.74
8.0.140.0070.00016.82
8.0.130.0030.00313.35
8.0.120.0000.00716.93
8.0.110.0040.00416.94
8.0.100.0020.00516.91
8.0.90.0000.00816.90
8.0.80.0030.01816.88
8.0.70.0030.00516.80
8.0.60.0000.00816.76
8.0.50.0040.00416.94
8.0.30.0070.01117.09
8.0.20.0110.00717.02
8.0.10.0000.00816.91
8.0.00.0060.01216.65
7.4.330.0000.00412.99
7.4.320.0000.00616.54
7.4.300.0060.00016.63
7.4.290.0000.00716.38
7.4.280.0030.00516.51
7.4.270.0000.00616.48
7.4.260.0050.00013.21
7.4.250.0050.00316.55
7.4.240.0000.00716.49
7.4.230.0000.00616.41
7.4.220.0120.00916.59
7.4.210.0120.00316.42
7.4.200.0070.00016.57
7.4.190.0000.00716.59
7.4.160.0150.00016.49
7.4.150.0130.00416.55
7.4.140.0180.00316.38
7.4.130.0170.00016.50
7.4.120.0150.00416.44
7.4.110.0090.01016.38
7.4.100.0100.00716.45
7.4.90.0110.01116.41
7.4.80.0080.00819.39
7.4.70.0050.01116.52
7.4.60.0030.01616.63
7.4.50.0000.00616.59
7.4.40.0040.01416.64
7.4.30.0110.00816.56
7.4.00.0080.00815.07
7.3.330.0040.00413.16
7.3.320.0050.00013.20
7.3.310.0000.00716.38
7.3.300.0030.00316.32
7.3.290.0070.00916.33
7.3.280.0090.00616.35
7.3.270.0150.00316.53
7.3.260.0150.00316.49
7.3.250.0090.01016.46
7.3.240.0090.00616.42
7.3.230.0150.00316.57
7.3.210.0090.00916.20
7.3.200.0000.01816.41
7.3.190.0070.01016.61
7.3.180.0130.00716.49
7.3.170.0070.01416.35
7.3.160.0120.01216.27
7.3.120.0120.00314.86
7.3.10.0080.00316.32
7.3.00.0110.00316.45
7.2.330.0060.01116.84
7.2.320.0060.01416.71
7.2.310.0060.01116.85
7.2.300.0160.00616.85
7.2.290.0090.00916.61
7.2.130.0170.00016.88
7.2.120.0070.00716.77
7.2.110.0090.01416.81
7.2.100.0030.01016.79
7.2.90.0140.00416.70
7.2.80.0050.00516.92
7.2.70.0040.01216.62
7.2.60.0080.00816.82
7.2.50.0040.01116.98
7.2.40.0000.01317.00
7.2.30.0100.00316.89
7.2.20.0060.01216.78
7.2.10.0090.00316.66
7.2.00.0050.00917.95
7.1.250.0040.00415.58
7.1.200.0000.01115.74
7.1.100.0000.01117.93
7.1.70.0000.00817.13
7.1.60.0140.01019.31
7.1.50.0030.01716.69
7.1.00.0000.04322.54
7.0.200.0150.00014.71
7.0.140.0000.07322.08
7.0.120.0000.06322.19
7.0.60.0070.05019.97
7.0.50.0100.03317.78
7.0.40.0100.03317.76
7.0.30.0000.04317.65
7.0.20.0000.04317.66
7.0.10.0000.04317.64
7.0.00.0070.03717.70
5.6.280.0000.07721.12
5.6.210.0100.07320.70
5.6.200.0070.03718.09
5.6.190.0030.04018.20
5.6.180.0100.03318.07
5.6.170.0000.05318.11
5.6.160.0130.04018.09
5.6.150.0100.03318.15
5.6.140.0100.03318.14
5.6.130.0000.04318.14
5.6.120.0000.04318.18
5.6.110.0000.04318.14
5.6.100.0100.07318.15
5.6.90.0030.09018.07
5.6.80.0170.06317.47
5.6.70.0070.07017.59
5.6.60.0070.06317.52
5.6.50.0100.06017.50
5.6.40.0100.07717.47
5.6.30.0030.08317.55
5.6.20.0100.06017.53
5.6.10.0070.07017.56
5.6.00.0070.07017.53
5.5.350.0230.07720.40
5.5.340.0030.04017.98
5.5.330.0000.04318.01
5.5.320.0030.04017.88
5.5.310.0000.04017.98
5.5.300.0070.03317.89
5.5.290.0070.04318.01
5.5.280.0030.04018.02
5.5.270.0100.07718.01
5.5.260.0100.08718.03
5.5.250.0030.08317.73
5.5.240.0070.08017.30
5.5.230.0070.05717.25
5.5.220.0030.08317.36
5.5.210.0070.07317.33
5.5.200.0070.06017.34
5.5.190.0100.07317.37
5.5.180.0030.07317.36
5.5.160.0070.07017.30
5.5.150.0030.06017.32
5.5.140.0100.03317.27
5.5.130.0070.06017.36
5.5.120.0100.04017.29
5.5.110.0100.04317.32
5.5.100.0030.04317.27
5.5.90.0100.07317.20
5.5.80.0030.08017.16
5.5.70.0030.04717.25
5.5.60.0030.07317.26
5.5.50.0100.03717.16
5.5.40.0100.07317.21
5.5.30.0100.05717.21
5.5.20.0200.04317.26
5.5.10.0130.07017.12
5.5.00.0130.07017.18
5.4.450.0070.03719.54
5.4.440.0000.04019.29
5.4.430.0070.06719.52
5.4.420.0070.07319.31
5.4.410.0100.06319.14
5.4.400.0030.04019.12
5.4.390.0030.04719.07
5.4.380.0170.03018.96
5.4.370.0200.06019.09
5.4.360.0030.05719.01
5.4.350.0100.03719.09
5.4.340.0070.07718.82
5.4.320.0070.05719.13
5.4.310.0030.04319.01
5.4.300.0030.04018.96
5.4.290.0070.05719.01
5.4.280.0100.07319.09
5.4.270.0030.05718.95
5.4.260.0130.04319.01
5.4.250.0100.05718.88
5.4.240.0130.06719.11
5.4.230.0030.07018.98
5.4.220.0070.04319.03
5.4.210.0070.08018.98
5.4.200.0000.08318.82
5.4.190.0170.06018.81
5.4.180.0130.06018.98
5.4.170.0030.07018.97
5.4.160.0000.07719.05
5.4.150.0030.08018.80
5.4.140.0070.06316.29
5.4.130.0100.06716.30
5.4.120.0030.07716.18
5.4.110.0070.05016.29
5.4.100.0100.06316.27
5.4.90.0000.06716.36
5.4.80.0100.07016.27
5.4.70.0000.07716.24
5.4.60.0070.05716.34
5.4.50.0100.03716.40
5.4.40.0100.05316.28
5.4.30.0030.07316.23
5.4.20.0100.07016.22
5.4.10.0030.07716.20
5.4.00.0100.06715.71
5.3.290.0030.04314.45
5.3.280.0100.05014.58
5.3.270.0070.07714.57
5.3.260.0130.06714.56
5.3.250.0070.08014.56
5.3.240.0070.06014.53
5.3.230.0030.08014.45
5.3.220.0100.04014.31
5.3.210.0030.07314.39
5.3.200.0030.04014.52
5.3.190.0100.07314.34
5.3.180.0070.05314.48
5.3.170.0170.03714.50
5.3.160.0100.07314.48
5.3.150.0030.04014.52
5.3.140.0070.07314.52
5.3.130.0070.07314.50
5.3.120.0070.07714.47
5.3.110.0130.06714.52
5.3.100.0070.07713.99
5.3.90.0100.06313.97
5.3.80.0070.08013.87
5.3.70.0070.05713.95
5.3.60.0070.03713.96
5.3.50.0130.07013.72
5.3.40.0130.05013.71
5.3.30.0030.07313.82
5.3.20.0030.04313.77
5.3.10.0030.05013.60
5.3.00.0000.07713.59
5.2.170.0000.03711.29
5.2.160.0030.06011.13
5.2.150.0030.06011.14
5.2.140.0100.05711.13
5.2.130.0000.04711.08
5.2.120.0070.05711.13
5.2.110.0130.05310.92
5.2.100.0000.06711.04
5.2.90.0000.05010.87
5.2.80.0000.06011.11
5.2.70.0070.06011.07
5.2.60.0000.06711.00
5.2.50.0000.05010.91
5.2.40.0070.05010.77
5.2.30.0000.06010.80
5.2.20.0000.06310.87
5.2.10.0030.06010.82
5.2.00.0030.06310.71
5.1.60.0030.05010.13
5.1.50.0100.0339.92
5.1.40.0030.0539.91
5.1.30.0130.04710.25
5.1.20.0000.04310.39
5.1.10.0000.04310.13
5.1.00.0070.04710.11
5.0.50.0030.0278.47
5.0.40.0000.0478.34
5.0.30.0030.0338.21
5.0.20.0000.0278.26
5.0.10.0000.0308.14
5.0.00.0000.0608.13
4.4.90.0000.0308.09
4.4.80.0030.0338.09
4.4.70.0030.0378.09
4.4.60.0030.0278.09
4.4.50.0030.0338.09
4.4.40.0030.0338.09
4.4.30.0000.0308.09
4.4.20.0100.0278.09
4.4.10.0070.0178.09
4.4.00.0130.0438.09
4.3.110.0030.0208.09
4.3.100.0070.0208.09
4.3.90.0000.0208.09
4.3.80.0030.0438.09
4.3.70.0000.0208.09
4.3.60.0000.0208.09
4.3.50.0000.0208.09
4.3.40.0030.0278.09
4.3.30.0000.0308.09
4.3.20.0000.0338.09
4.3.10.0000.0278.09
4.3.00.0030.0178.09

preferences:
41.4 ms | 400 KiB | 5 Q