3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "Ваc зовут O\'reilly? \\/\\/\\"; function utf8_to_cp1251($s) { for ($c=0;$c<strlen($s);$c++) { $i=ord($s[$c]); if ($i<=127) $out.=$s[$c]; if ($byte2){ $new_c2=($c1&3)*64+($i&63); $new_c1=($c1>>2)&5; $new_i=$new_c1*256+$new_c2; if ($new_i==1025){ $out_i=168; } else { if ($new_i==1105){ $out_i=184; } else { $out_i=$new_i-848; } } $out.=chr($out_i); $byte2=false; } if (($i>>5)==6) { $c1=$i; $byte2=true; } } return $out; } echo utf8_to_cp1251($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)
8.3.60.0100.00318.43
8.3.50.0090.00921.27
8.3.40.0070.00718.74
8.3.30.0100.01318.67
8.3.20.0050.00318.85
8.3.10.0000.00821.16
8.3.00.0040.00423.66
8.2.180.0150.00316.50
8.2.170.0120.00622.96
8.2.160.0070.00720.43
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0040.00419.70
8.2.110.0080.00819.33
8.2.100.0120.00017.91
8.2.90.0060.00319.35
8.2.80.0000.00917.97
8.2.70.0080.00417.75
8.2.60.0040.00418.04
8.2.50.0080.00418.07
8.2.40.0040.00418.16
8.2.30.0040.00419.33
8.2.20.0070.00017.67
8.2.10.0040.00417.75
8.2.00.0070.00417.69
8.1.270.0000.01023.99
8.1.260.0070.01026.35
8.1.250.0080.00028.09
8.1.240.0030.00622.09
8.1.230.0080.00319.00
8.1.220.0060.00317.74
8.1.210.0080.00018.77
8.1.200.0040.00417.35
8.1.190.0000.00917.25
8.1.180.0080.00018.10
8.1.170.0050.00318.72
8.1.160.0030.00518.89
8.1.150.0050.00218.69
8.1.140.0050.00217.48
8.1.130.0070.00017.83
8.1.120.0000.00717.37
8.1.110.0030.00717.30
8.1.100.0040.00317.45
8.1.90.0050.00317.46
8.1.80.0000.00817.43
8.1.70.0070.00017.42
8.1.60.0080.00417.48
8.1.50.0040.00417.43
8.1.40.0080.00017.42
8.1.30.0040.00417.49
8.1.20.0000.00817.50
8.1.10.0000.00817.60
8.1.00.0040.00717.52
8.0.300.0050.00218.77
8.0.290.0040.00416.75
8.0.280.0030.00318.45
8.0.270.0040.00417.18
8.0.260.0030.00316.92
8.0.250.0040.00417.03
8.0.240.0060.00316.99
8.0.230.0000.00716.85
8.0.220.0030.00316.77
8.0.210.0000.00816.85
8.0.200.0030.00316.82
8.0.190.0040.00417.00
8.0.180.0000.00716.95
8.0.170.0050.00316.82
8.0.160.0000.00716.90
8.0.150.0030.00516.80
8.0.140.0070.00016.89
8.0.130.0070.00013.25
8.0.120.0050.00316.78
8.0.110.0070.00016.93
8.0.100.0000.00717.02
8.0.90.0050.00216.82
8.0.80.0110.01116.88
8.0.70.0040.00416.85
8.0.60.0000.00717.01
8.0.50.0000.00816.84
8.0.30.0080.01117.19
8.0.20.0120.02217.41
8.0.10.0040.00416.96
8.0.00.0150.00616.82
7.4.330.0000.00516.79
7.4.320.0000.00616.52
7.4.300.0060.00016.47
7.4.290.0000.00816.42
7.4.280.0070.00016.49
7.4.270.0040.00416.50
7.4.260.0000.00513.23
7.4.250.0000.00816.38
7.4.240.0040.00416.61
7.4.230.0030.00316.54
7.4.220.0200.00416.45
7.4.210.0060.01016.51
7.4.200.0000.00716.43
7.4.190.0070.00016.65
7.4.160.0130.00316.54
7.4.150.0180.00917.40
7.4.140.0120.00517.86
7.4.130.0080.01516.44
7.4.120.0070.00916.65
7.4.110.0070.01016.55
7.4.100.0100.00716.64
7.4.90.0090.00916.59
7.4.80.0140.01019.39
7.4.70.0120.00616.64
7.4.60.0140.00316.45
7.4.50.0040.00416.53
7.4.40.0060.01122.77
7.4.30.0050.01216.49
7.4.00.0070.00715.18
7.3.330.0000.00513.30
7.3.320.0000.00613.39
7.3.310.0050.00316.47
7.3.300.0000.00716.38
7.3.290.0140.00016.37
7.3.280.0110.00516.36
7.3.270.0280.01917.40
7.3.260.0080.01218.24
7.3.250.0120.00716.47
7.3.240.0100.00716.59
7.3.230.0100.00616.50
7.3.210.0100.00716.57
7.3.200.0060.01119.39
7.3.190.0130.00316.49
7.3.180.0060.00916.45
7.3.170.0030.01216.50
7.3.160.0060.00916.40
7.3.120.0030.01314.75
7.3.10.0060.00916.77
7.3.00.0090.00616.71
7.2.330.0110.01116.71
7.2.320.0090.01016.55
7.2.310.0130.00716.80
7.2.300.0060.01116.70
7.2.290.0060.01216.85
7.2.130.0030.01317.07
7.2.120.0060.00616.96
7.2.110.0060.00617.05
7.2.100.0090.00916.96
7.2.90.0110.00416.79
7.2.80.0190.00417.01
7.2.70.0050.00517.04
7.2.60.0060.00917.09
7.2.50.0070.00416.97
7.2.40.0030.00916.69
7.2.30.0050.00317.09
7.2.20.0040.00916.79
7.2.10.0060.00617.01
7.2.00.0030.01018.12
7.1.250.0030.00715.95
7.1.100.0000.01118.33
7.1.70.0000.00817.35
7.1.60.0080.00417.12
7.1.50.0100.01317.02
7.1.00.0030.03322.50
7.0.200.0130.00616.78
7.0.140.0000.07722.01
7.0.80.0170.04319.92
7.0.70.0070.08019.95
7.0.60.0500.04319.95
7.0.50.0700.06720.24
7.0.40.0100.08320.14
7.0.30.0030.05320.13
7.0.20.0070.08320.10
7.0.10.0070.08020.18
7.0.00.0100.04320.10
5.6.280.0100.06720.91
5.6.230.0130.07020.72
5.6.220.0100.05020.53
5.6.210.0000.06320.59
5.6.200.0070.08321.04
5.6.190.0030.04720.94
5.6.180.0100.08021.04
5.6.170.0000.08720.96
5.6.160.0070.04020.94
5.6.150.0070.04020.92
5.6.140.0100.05321.00
5.6.130.0170.07321.07
5.6.120.0130.07321.03
5.6.110.0100.08321.02
5.6.100.0100.07721.07
5.6.90.0030.09321.03
5.6.80.0130.06020.49
5.6.70.0000.06720.52
5.6.60.0170.08020.33
5.6.50.0070.07020.47
5.6.40.0130.08020.41
5.6.30.0070.08020.45
5.6.20.0070.06020.40
5.6.10.0100.07320.37
5.6.00.0070.07720.45
5.5.370.0070.08020.39
5.5.360.0100.08720.37
5.5.350.0130.03720.36
5.5.340.0130.07020.84
5.5.330.0100.07720.86
5.5.320.0170.07020.76
5.5.310.0030.08720.91
5.5.300.0170.03720.89
5.5.290.0230.03320.93
5.5.280.0070.07720.76
5.5.270.0130.07720.63
5.5.260.0170.07720.83
5.5.250.0000.09020.61
5.5.240.0030.05020.27
5.5.230.0070.07320.16
5.5.220.0130.07320.26
5.5.210.0070.07720.30
5.5.200.0070.08720.29
5.5.190.0030.06320.18
5.5.180.0070.05320.28
5.5.160.0000.04720.15
5.5.150.0170.07020.14
5.5.140.0030.07720.27
5.5.130.0070.07720.25
5.5.120.0130.04320.27
5.5.110.0200.06720.25
5.5.100.0070.08020.10
5.5.90.0100.04319.93
5.5.80.0170.06720.16
5.5.70.0070.06720.09
5.5.60.0000.04320.00
5.5.50.0030.05320.00
5.5.40.0300.05020.05
5.5.30.0070.07720.05
5.5.20.0100.03720.09
5.5.10.0030.06019.97
5.5.00.0170.07319.96
5.4.450.0070.07019.47
5.4.440.0100.08019.19
5.4.430.0100.07319.48
5.4.420.0200.06719.35
5.4.410.0100.07319.26
5.4.400.0130.06719.05
5.4.390.0170.05719.09
5.4.380.0000.08319.23
5.4.370.0170.06319.16
5.4.360.0170.07018.85
5.4.350.0030.05019.13
5.4.340.0070.06019.14
5.4.320.0200.06719.03
5.4.310.0070.07018.95
5.4.300.0100.04019.11
5.4.290.0030.07719.12
5.4.280.0170.06319.12
5.4.270.0100.07319.04
5.4.260.0070.07318.94
5.4.250.0070.07319.11
5.4.240.0030.08319.02
5.4.230.0070.07319.04
5.4.220.0030.05319.16
5.4.210.0030.04719.15
5.4.200.0100.07719.09
5.4.190.0070.08019.04
5.4.180.0100.07719.02
5.4.170.0070.08019.02
5.4.160.0170.04719.18
5.4.150.0100.07318.89
5.4.140.0130.06716.41
5.4.130.0100.07016.34
5.4.120.0000.04716.27
5.4.110.0070.04016.43
5.4.100.0070.07716.42
5.4.90.0000.05016.46
5.4.80.0070.05316.45
5.4.70.0100.07316.47
5.4.60.0070.05016.45
5.4.50.0030.07316.36
5.4.40.0070.07016.46
5.4.30.0130.03716.41
5.4.20.0070.06716.30
5.4.10.0000.08316.47
5.4.00.0170.06715.90
5.3.290.0070.05714.75
5.3.280.0070.07714.71
5.3.270.0100.07314.63
5.3.260.0030.08014.56
5.3.250.0070.07714.53
5.3.240.0070.04014.59
5.3.230.0070.06714.58
5.3.220.0000.04014.63
5.3.210.0100.06714.48
5.3.200.0070.07314.49
5.3.190.0070.07714.49
5.3.180.0030.08314.56
5.3.170.0030.07714.59
5.3.160.0070.08014.54
5.3.150.0030.08014.55
5.3.140.0000.05714.66
5.3.130.0100.06314.48
5.3.120.0070.06014.66
5.3.110.0100.08014.60
5.3.100.0030.07713.97
5.3.90.0070.07013.94
5.3.80.0030.04714.12
5.3.70.0030.05314.11
5.3.60.0130.05713.89
5.3.50.0100.07014.08
5.3.40.0070.06713.94
5.3.30.0070.07014.03
5.3.20.0030.05313.61
5.3.10.0070.07313.63
5.3.00.0030.07313.72
5.2.170.0000.07011.79
5.2.160.0070.06011.79
5.2.150.0070.06311.79
5.2.140.0070.06011.79
5.2.130.0000.06711.79
5.2.120.0030.05011.79
5.2.110.0130.05711.79
5.2.100.0100.05711.79
5.2.90.0070.06011.79
5.2.80.0030.06711.79
5.2.70.0000.05711.79
5.2.60.0070.05711.79
5.2.50.0030.06311.79
5.2.40.0000.05311.79
5.2.30.0030.05711.79
5.2.20.0200.05011.79
5.2.10.0070.05011.79
5.2.00.0100.05311.79
5.1.60.0100.04011.79
5.1.50.0100.02711.79
5.1.40.0070.04711.79
5.1.30.0000.04711.79
5.1.20.0070.05311.79
5.1.10.0100.03711.79
5.1.00.0070.04311.79
5.0.50.0070.04311.79
5.0.40.0070.04311.79
5.0.30.0030.05711.79
5.0.20.0200.02711.79
5.0.10.0000.05011.79
5.0.00.0030.04311.79
4.4.90.0070.03011.79
4.4.80.0000.02011.79
4.4.70.0030.03711.79
4.4.60.0000.03311.79
4.4.50.0030.03311.79
4.4.40.0030.05311.79
4.4.30.0000.03711.79
4.4.20.0030.03311.79
4.4.10.0070.03011.79
4.4.00.0030.05711.79
4.3.110.0000.03311.79
4.3.100.0070.01311.79
4.3.90.0000.01711.79
4.3.80.0030.02311.79
4.3.70.0000.02311.79
4.3.60.0070.02711.79
4.3.50.0070.01011.79
4.3.40.0000.02711.79
4.3.30.0000.01711.79
4.3.20.0000.02011.79
4.3.10.0000.03711.79
4.3.00.0000.01711.79

preferences:
61.29 ms | 400 KiB | 5 Q