3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 []= 'wello'; $var2 = 'woodbye wruel world'; $var3 = pack("n*", 0x77, 0x32 + 0x33, 0x6c, 0x6e-2, 0x6f); $var4 = pack('n*', 0x7765, 0x6c6c, 0x6f00); echo "var3 = $var3"; var_dump($var4); if ($var4 == $arr1[0]) {echo "$var3 == $arr1[0]"; } var_dump(poor_mans_strcmp('a', 'z')); var_dump(poor_mans_strcmp('q111f', 'fffff')); var_dump(poor_mans_strcmp($arr1, $var2)); var_dump(poor_mans_strcmp($arr1[0], $var2)); var_dump(poor_mans_strcmp($var2, $var2)); var_dump(poor_mans_strcmp($arr1[0], $var3)); var_dump(poor_mans_strcmp($arr1[0], $var4)); function poor_mans_strcmp($str1, $str2) { # use old shell programming trick $str3 = 'a' . $str1; $str4 = 'a' . $str2; # strip null bytes to make it binary safe! $str3 = str_replace(chr(0), '', $str3); $str4 = str_replace(chr(0), '', $str4); var_dump($str3, $str4); $result = 0; if ($str3 < $str4) { $result = -1; } if ($str3 > $str4) { if ($result == -1) {echo "Serious error detected, keep on trucking!\n";} $result = 1; } return $result; }

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)
8.3.60.0040.01116.88
8.3.50.0220.00822.88
8.3.40.0070.01119.01
8.3.30.0140.00319.21
8.3.20.0040.00420.20
8.3.10.0000.00823.62
8.3.00.0040.00419.38
8.2.180.0160.00318.16
8.2.170.0150.00022.96
8.2.160.0140.00020.43
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0040.00421.11
8.2.110.0060.00320.18
8.2.100.0080.00418.16
8.2.90.0000.00719.34
8.2.80.0000.00817.97
8.2.70.0040.00417.63
8.2.60.0040.00418.04
8.2.50.0040.00418.07
8.2.40.0000.00818.22
8.2.30.0000.00718.05
8.2.20.0040.00417.68
8.2.10.0070.00018.02
8.2.00.0040.00417.67
8.1.280.0080.01125.92
8.1.270.0080.00023.67
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00322.10
8.1.230.0060.00619.21
8.1.220.0080.00017.79
8.1.210.0040.00418.77
8.1.200.0060.00317.23
8.1.190.0030.00617.13
8.1.180.0000.00818.10
8.1.170.0060.00318.50
8.1.160.0040.00421.98
8.1.150.0040.00418.96
8.1.140.0000.00717.48
8.1.130.0030.00317.77
8.1.120.0000.00717.55
8.1.110.0050.00317.45
8.1.100.0040.00417.49
8.1.90.0040.00417.45
8.1.80.0040.00417.38
8.1.70.0050.00317.43
8.1.60.0000.00917.63
8.1.50.0030.00717.55
8.1.40.0030.00517.41
8.1.30.0000.00817.54
8.1.20.0080.00017.72
8.1.10.0080.00017.49
8.1.00.0040.00417.52
8.0.300.0040.00318.77
8.0.290.0070.00016.61
8.0.280.0050.00318.54
8.0.270.0040.00417.33
8.0.260.0000.00617.28
8.0.250.0000.00717.06
8.0.240.0040.00417.07
8.0.230.0030.00317.01
8.0.220.0070.00016.94
8.0.210.0030.00516.97
8.0.200.0040.00417.06
8.0.190.0030.00617.05
8.0.180.0000.00817.02
8.0.170.0030.00517.02
8.0.160.0030.00317.04
8.0.150.0040.00416.78
8.0.140.0050.00316.94
8.0.130.0030.00313.40
8.0.120.0050.00316.83
8.0.110.0030.00516.98
8.0.100.0080.00016.95
8.0.90.0040.00417.05
8.0.80.0070.01416.97
8.0.70.0000.00716.88
8.0.60.0040.00416.86
8.0.50.0040.00416.76
8.0.30.0080.01117.10
8.0.20.0070.01517.40
8.0.10.0040.00416.95
8.0.00.0100.01016.79
7.4.330.0050.00015.00
7.4.320.0030.00316.53
7.4.300.0030.00316.60
7.4.290.0040.00316.68
7.4.280.0030.00616.61
7.4.270.0030.00316.63
7.4.260.0070.00016.42
7.4.250.0030.00516.57
7.4.240.0040.00416.56
7.4.230.0030.00316.37
7.4.220.0060.01216.55
7.4.210.0060.01216.62
7.4.200.0000.00716.42
7.4.160.0100.01016.65
7.4.150.0160.00917.40
7.4.140.0070.01017.86
7.4.130.0060.01516.63
7.4.120.0090.00916.67
7.4.110.0100.00616.46
7.4.100.0080.01616.59
7.4.90.0090.00916.40
7.4.80.0190.00319.39
7.4.70.0050.01216.40
7.4.60.0030.02016.42
7.4.50.0000.00816.38
7.4.40.0130.00716.48
7.4.30.0030.01416.66
7.4.00.0060.01215.14
7.3.330.0000.00513.42
7.3.320.0000.00613.41
7.3.310.0030.00316.49
7.3.300.0000.00716.47
7.3.290.0090.01116.48
7.3.280.0150.00516.47
7.3.270.0160.00617.40
7.3.260.0110.00716.46
7.3.250.0120.00916.51
7.3.240.0060.01316.48
7.3.230.0080.00816.70
7.3.210.0120.01316.41
7.3.200.0100.00719.39
7.3.190.0110.01116.49
7.3.180.0080.00816.43
7.3.170.0060.00916.59
7.3.160.0090.00616.52
7.3.10.0060.00916.63
7.3.00.0280.00416.29
7.2.330.0100.01316.65
7.2.320.0090.00916.84
7.2.310.0150.00416.60
7.2.300.0040.01416.50
7.2.290.0100.00716.85
7.2.130.0160.00916.75
7.2.120.0130.01316.57
7.2.110.0160.01316.81
7.2.100.0090.00916.39
7.2.90.0140.00316.42
7.2.80.0100.00716.70
7.2.70.0120.00616.63
7.2.60.0080.01216.73
7.2.50.0120.00616.64
7.2.40.0100.01016.67
7.2.30.0110.01116.76
7.2.20.0130.00616.91
7.2.10.0180.00416.98
7.2.00.0130.00818.09
7.1.250.0200.00415.42
7.1.100.0300.00417.51
7.1.70.0050.00517.23
7.1.60.0100.01419.46
7.1.50.0130.00617.00
7.1.00.0030.07322.44
7.0.200.0040.00416.78
7.0.140.0030.06722.00
7.0.60.0000.04319.98
7.0.50.0030.04017.91
7.0.40.0130.08020.11
7.0.30.0300.06720.13
7.0.20.0100.05020.07
7.0.10.0030.08720.08
7.0.00.0100.08320.22
5.6.280.0000.07721.04
5.6.210.0070.03720.51
5.6.200.0100.05018.20
5.6.190.0070.04720.57
5.6.180.0300.07320.57
5.6.170.0230.04720.48
5.6.160.0000.06020.39
5.6.150.0070.06718.19
5.6.140.0030.04018.27
5.6.130.0170.06318.27
5.6.120.0070.07320.98
5.6.110.0070.08320.99
5.6.100.0130.03320.99
5.6.90.0130.06321.08
5.6.80.0100.08020.54
5.5.350.0330.06020.48
5.5.340.0070.03717.95
5.5.330.0100.07320.19
5.5.320.0230.04020.36
5.5.310.0370.07720.37
5.5.300.0100.04317.98
5.5.290.0100.06017.94
5.5.280.0070.04020.81
5.5.270.0070.08020.78
5.5.260.0170.07320.89
5.5.250.0070.03720.70
5.5.240.0030.04020.29
5.4.450.0270.04019.52
5.4.440.0300.04019.37
5.4.430.0130.04319.63
5.4.420.0200.04319.16
5.4.410.0230.03319.41
5.4.400.0070.03718.88
5.4.390.0100.03719.31
5.4.380.0330.08018.73
5.4.370.0670.06018.78
5.4.360.0200.05718.57
5.4.350.0270.05318.57
5.4.340.0370.05318.58
5.4.320.0060.03912.52
5.4.310.0050.04012.51
5.4.300.0070.04212.51
5.4.290.0040.04812.51
5.4.280.0080.03612.40
5.4.270.0060.04312.41
5.4.260.0090.04312.40
5.4.250.0090.04412.41
5.4.240.0090.03912.41
5.4.230.0050.04512.40
5.4.220.0030.04112.39
5.4.210.0080.04412.40
5.4.200.0070.04312.40
5.4.190.0070.03512.39
5.4.180.0060.03612.39
5.4.170.0070.04312.41
5.4.160.0070.04812.40
5.4.150.0080.04512.39
5.4.140.0050.05212.07
5.4.130.0080.03612.07
5.4.120.0070.03912.03
5.4.110.0080.03812.02
5.4.100.0070.03412.02
5.4.90.0060.03712.02
5.4.80.0040.04012.02
5.4.70.0090.03612.02
5.4.60.0070.03312.02
5.4.50.0080.03312.02
5.4.40.0080.03312.00
5.4.30.0060.03612.00
5.4.20.0040.03912.00
5.4.10.0080.03312.00
5.4.00.0050.03711.48
5.3.290.0060.04212.80
5.3.280.0060.03912.71
5.3.270.0110.04412.73
5.3.260.0090.05412.72
5.3.250.0110.04812.72
5.3.240.0100.04112.72
5.3.230.0060.04412.71
5.3.220.0100.04312.68
5.3.210.0070.04712.68
5.3.200.0100.03812.68
5.3.190.0040.04212.68
5.3.180.0090.03712.67
5.3.170.0060.03812.67
5.3.160.0060.03812.67
5.3.150.0090.03612.67
5.3.140.0080.03712.66
5.3.130.0150.03812.65
5.3.120.0050.04412.66
5.3.110.0080.03912.66
5.3.100.0060.03912.13
5.3.90.0050.04612.11
5.3.80.0090.04012.10
5.3.70.0110.03612.11
5.3.60.0080.04712.09
5.3.50.0090.04712.04
5.3.40.0140.04112.04
5.3.30.0100.04412.00
5.3.20.0090.04511.78
5.3.10.0110.04411.74
5.3.00.0070.04911.73
5.2.170.0040.0419.23
5.2.160.0030.0449.23
5.2.150.0100.0369.23
5.2.140.0070.0339.23
5.2.130.0060.0309.19
5.2.120.0060.0299.19
5.2.110.0040.0329.20
5.2.100.0070.0289.19
5.2.90.0040.0319.19
5.2.80.0060.0309.19
5.2.70.0060.0309.19
5.2.60.0020.0369.14
5.2.50.0030.0329.11
5.2.40.0030.0329.09
5.2.30.0070.0289.06
5.2.20.0040.0299.04
5.2.10.0030.0308.95
5.2.00.0030.0318.82
5.1.60.0040.0248.10
5.1.50.0030.0268.10
5.1.40.0050.0248.08
5.1.30.0030.0288.43
5.1.20.0030.0298.45
5.1.10.0020.0308.17
5.1.00.0070.0238.18
5.0.50.0040.0216.66
5.0.40.0040.0196.52
5.0.30.0050.0306.33
5.0.20.0040.0196.29
5.0.10.0020.0226.27
5.0.00.0060.0306.27
4.4.90.0040.0224.78
4.4.80.0020.0194.75
4.4.70.0050.0144.75
4.4.60.0020.0174.75
4.4.50.0040.0154.77
4.4.40.0040.0244.71
4.4.30.0030.0164.76
4.4.20.0020.0164.84
4.4.10.0040.0154.85
4.4.00.0050.0274.76
4.3.110.0060.0204.67
4.3.100.0040.0184.66
4.3.90.0020.0244.63
4.3.80.0060.0254.59
4.3.70.0060.0184.63
4.3.60.0000.0184.62
4.3.50.0030.0154.63
4.3.40.0020.0264.53
4.3.30.0010.0173.33
4.3.20.0030.0163.30
4.3.10.0030.0153.26
4.3.00.0030.01318.23

preferences:
46.36 ms | 401 KiB | 5 Q