3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i = 0; $i < 256; $i++) { $str = str_pad(strtoupper(dechex($i)), 2, '0', STR_PAD_LEFT); $p1 = [$str[0]]; if ($str[0] >= 'A' && $str[0] <= 'F') { $p1[] = strtolower($str[0]); } $p2 = [$str[1]]; if ($str[1] >= 'A' && $str[1] <= 'F') { $p2[] = strtolower($str[1]); } foreach ($p1 as $c1) foreach ($p2 as $c2) echo "const \\x{$c1}{$c2} = \"\\x{$str}\";\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)
8.3.60.0120.00916.61
8.3.50.0140.00621.99
8.3.40.0080.00818.78
8.3.30.0090.00619.17
8.3.20.0040.00420.09
8.3.10.0070.00421.90
8.3.00.0030.00619.79
8.2.180.0060.01316.38
8.2.170.0100.00622.96
8.2.160.0130.00319.01
8.2.150.0040.00424.18
8.2.140.0030.00524.66
8.2.130.0080.00026.16
8.2.120.0040.00421.05
8.2.110.0080.00419.27
8.2.100.0080.00417.84
8.2.90.0040.00419.12
8.2.80.0050.00317.97
8.2.70.0030.00517.50
8.2.60.0040.00418.05
8.2.50.0000.00818.07
8.2.40.0050.00518.09
8.2.30.0000.00719.50
8.2.20.0050.00317.74
8.2.10.0080.00017.99
8.2.00.0030.00517.82
8.1.280.0090.00625.92
8.1.270.0060.00323.99
8.1.260.0060.01026.35
8.1.250.0050.00328.09
8.1.240.0060.00323.87
8.1.230.0100.00320.88
8.1.220.0000.00818.77
8.1.210.0000.00818.99
8.1.200.0060.00317.23
8.1.190.0000.00817.55
8.1.180.0070.00318.10
8.1.170.0060.00318.73
8.1.160.0060.00318.88
8.1.150.0040.00418.86
8.1.140.0000.00817.32
8.1.130.0050.00217.82
8.1.120.0030.00617.44
8.1.110.0040.00417.34
8.1.100.0070.00017.50
8.1.90.0000.00717.49
8.1.80.0040.00417.34
8.1.70.0030.00517.39
8.1.60.0040.00417.49
8.1.50.0040.00417.41
8.1.40.0080.00017.50
8.1.30.0030.00517.70
8.1.20.0000.00817.68
8.1.10.0050.00517.47
8.1.00.0080.00017.43
8.0.300.0040.00419.85
8.0.290.0030.00517.05
8.0.280.0070.00018.32
8.0.270.0030.00618.61
8.0.260.0070.00017.25
8.0.250.0070.00016.85
8.0.240.0040.00416.86
8.0.230.0070.00016.99
8.0.220.0050.00316.91
8.0.210.0070.00016.78
8.0.200.0030.00316.89
8.0.190.0000.00816.91
8.0.180.0080.00016.95
8.0.170.0040.00416.88
8.0.160.0050.00316.88
8.0.150.0080.00016.73
8.0.140.0080.00316.79
8.0.130.0030.00513.30
8.0.120.0040.00416.75
8.0.110.0000.00816.93
8.0.100.0030.00516.71
8.0.90.0080.00016.92
8.0.80.0090.00916.79
8.0.70.0030.00517.00
8.0.60.0000.00816.76
8.0.50.0080.00016.88
8.0.30.0130.01616.99
8.0.20.0160.00817.40
8.0.10.0040.00416.88
8.0.00.0110.01116.61
7.4.330.0060.00015.02
7.4.320.0000.00616.60
7.4.300.0030.00316.45
7.4.290.0000.00716.51
7.4.280.0040.00416.55
7.4.270.0000.00716.37
7.4.260.0040.00416.46
7.4.250.0060.00316.55
7.4.240.0040.00416.51
7.4.230.0000.00716.52
7.4.220.0100.01416.50
7.4.210.0030.01816.70
7.4.200.0030.00616.60
7.4.160.0130.01016.80
7.4.150.0110.01117.40
7.4.140.0130.01217.86
7.4.130.0030.01616.54
7.4.120.0090.01016.46
7.4.110.0190.00616.56
7.4.100.0180.01316.54
7.4.90.0130.01316.41
7.4.80.0170.01019.39
7.4.70.0070.01416.56
7.4.60.0150.00616.37
7.4.50.0000.00916.31
7.4.40.0110.01116.57
7.4.30.0040.01416.57
7.4.00.0030.01514.69
7.3.330.0030.00313.23
7.3.320.0000.00713.06
7.3.310.0040.00416.33
7.3.300.0050.00316.22
7.3.290.0060.00916.32
7.3.280.0070.01416.30
7.3.270.0160.00617.40
7.3.260.0120.01216.72
7.3.250.0130.01116.52
7.3.240.0210.00016.55
7.3.230.0120.01516.39
7.3.210.0030.02016.55
7.3.200.0160.00319.39
7.3.190.0120.00816.56
7.3.180.0090.01316.47
7.3.170.0180.00016.32
7.3.160.0070.01016.47
7.2.330.0090.01316.49
7.2.320.0060.01516.75
7.2.310.0260.00916.43
7.2.300.0050.01716.74
7.2.290.0130.01616.44
7.2.60.0070.00717.03
7.2.00.0030.00919.59
7.1.200.0000.01415.77
7.1.100.0060.00918.13
7.1.70.0040.00417.34
7.1.60.0060.01919.34
7.1.50.0000.02417.04
7.1.00.0100.07322.33
7.0.200.0040.00716.80
7.0.140.0100.07022.00
7.0.60.0170.07319.93
7.0.50.0100.06017.86
7.0.40.0070.06019.96
7.0.30.0170.05020.09
7.0.20.0270.05020.33
7.0.10.0030.09020.11
7.0.00.0100.07020.20
5.6.280.0000.08020.93
5.6.210.0070.04020.48
5.6.200.0100.03718.21
5.6.190.0070.04020.64
5.6.180.0170.04020.59
5.6.170.0270.06320.42
5.6.160.0170.08020.48
5.6.150.0030.08718.13
5.6.140.0100.07018.12
5.6.130.0030.07718.10
5.6.120.0100.06020.89
5.6.110.0030.08321.05
5.6.100.0070.08020.96
5.6.90.0070.05020.99
5.6.80.0070.07720.41
5.5.350.0130.08320.34
5.5.340.0130.07317.88
5.5.330.0000.05020.23
5.5.320.0230.05020.28
5.5.310.0330.08320.28
5.5.300.0070.08318.01
5.5.290.0100.08018.00
5.5.280.0030.08720.88
5.5.270.0070.05320.68
5.5.260.0030.08320.77
5.5.250.0000.04720.61
5.5.240.0200.06720.28
5.4.450.0530.04319.57
5.4.440.0130.04719.10
5.4.430.0570.05019.38
5.4.420.0130.05319.31
5.4.410.0130.05318.68
5.4.400.0100.06018.77
5.4.390.0100.08318.72
5.4.380.0170.05318.53
5.4.370.0070.05718.77
5.4.360.0230.04318.70
5.4.350.0200.03013.89
5.4.340.0170.04013.71
5.4.320.0230.04014.20
5.4.310.0300.03014.20
5.4.300.0170.04314.21
5.4.290.0030.05014.13
5.4.280.0070.04714.03
5.4.270.0100.04714.02
5.4.260.0130.04014.26
5.4.250.0200.04714.06
5.4.240.0230.04714.08
5.4.230.0100.04014.02
5.4.220.0130.04314.01
5.4.210.0100.04314.08
5.4.200.0130.04314.01
5.4.190.0130.03314.09
5.4.180.0100.04014.00
5.4.170.0100.03714.09
5.4.160.0100.04014.04
5.4.150.0170.04014.00
5.4.140.0200.04013.86
5.4.130.0070.05013.70
5.4.120.0230.04013.73
5.4.110.0130.04313.69
5.4.100.0100.04013.66
5.4.90.0130.04013.64
5.4.80.0000.04713.88
5.4.70.0130.03313.79
5.4.60.0100.04713.64
5.4.50.0030.04713.66
5.4.40.0100.04013.86
5.4.30.0200.03013.71
5.4.20.0100.04013.64
5.4.10.0130.03713.66
5.4.00.0070.04313.12
5.3.290.0130.04014.59
5.3.280.0030.05314.54
5.3.270.0170.04314.50
5.3.260.0130.05314.44
5.3.250.0130.03714.50
5.3.240.0100.04014.55
5.3.230.0070.04314.58
5.3.220.0030.04014.46
5.3.210.0070.05014.48
5.3.200.0070.04014.44
5.3.190.0030.04714.41
5.3.180.0100.03714.46
5.3.170.0100.03314.42
5.3.160.0130.04314.43
5.3.150.0070.04314.45
5.3.140.0070.04314.43
5.3.130.0100.03714.48
5.3.120.0270.03014.54
5.3.110.0030.04314.45
5.3.100.0000.04713.87
5.3.90.0000.04313.94
5.3.80.0100.03313.97
5.3.70.0030.04713.92
5.3.60.0100.04714.00
5.3.50.0070.04013.82
5.3.40.0070.03713.82
5.3.30.0070.03313.90
5.3.20.0130.03013.59
5.3.10.0130.03313.59
5.3.00.0170.03013.64
5.2.170.0100.02711.04
5.2.160.0030.03011.04
5.2.150.0000.03710.99
5.2.140.0070.03311.13
5.2.130.0030.03011.06
5.2.120.0070.03011.00
5.2.110.0100.02711.00
5.2.100.0070.03011.13
5.2.90.0130.03011.21
5.2.80.0030.03311.06
5.2.70.0130.02710.99
5.2.60.0030.03710.91
5.2.50.0070.03011.11
5.2.40.0100.02710.91
5.2.30.0070.03010.96
5.2.20.0070.03010.85
5.2.10.0070.03010.84
5.2.00.0070.03010.63
5.1.60.0100.0209.96
5.1.50.0070.02310.00
5.1.40.0130.0179.94
5.1.30.0030.04010.31
5.1.20.0070.02310.40
5.1.10.0030.04010.04
5.1.00.0070.02710.11
5.0.50.0070.0178.55
5.0.40.0070.0238.41
5.0.30.0100.0408.18
5.0.20.0030.0278.20
5.0.10.0100.0238.11
5.0.00.0070.0408.18
4.4.90.0100.0175.78
4.4.80.0030.0175.84
4.4.70.0030.0175.77
4.4.60.0000.0205.80
4.4.50.0000.0205.93
4.4.40.0070.0275.87
4.4.30.0030.0175.75
4.4.20.0000.0235.93
4.4.10.0070.0105.93
4.4.00.0000.0275.91
4.3.110.0030.0135.76
4.3.100.0000.0205.71
4.3.90.0030.0135.75
4.3.80.0070.0305.79
4.3.70.0030.0175.70
4.3.60.0030.0135.72
4.3.50.0000.0205.84
4.3.40.0000.0275.74
4.3.30.0000.0204.50
4.3.20.0030.0204.52
4.3.10.0000.0204.47
4.3.00.0370.01316.52

preferences:
55.34 ms | 401 KiB | 5 Q