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 == $arr1[0]"; } if (! strcmp($var4, $arr1[0])) { echo "got a match with strcmp"; } var_dump(poor_mans_strcmp('a', 'z')); var_dump(poor_mans_strcmp('q111f', 'fffff')); var_dump(poor_mans_strcmp($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, $binary_safe = 0) { # use old shell programming trick $str3 = 'a' . $str1; $str4 = 'a' . $str2; if ($binary_safe) { # 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)
8.3.70.0070.01016.88
8.3.60.0110.00716.63
8.3.50.0080.01222.92
8.3.40.0070.00718.95
8.3.30.0070.00718.81
8.3.20.0000.00820.34
8.3.10.0080.00023.48
8.3.00.0080.00019.30
8.2.180.0110.00716.75
8.2.170.0040.01122.96
8.2.160.0100.01320.38
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0100.00019.66
8.2.110.0030.00720.11
8.2.100.0000.01218.16
8.2.90.0080.00019.21
8.2.80.0050.00317.97
8.2.70.0060.00317.63
8.2.60.0080.00018.03
8.2.50.0060.00318.07
8.2.40.0000.00818.28
8.2.30.0050.00218.04
8.2.20.0050.00317.69
8.2.10.0000.00818.21
8.2.00.0000.00717.82
8.1.280.0090.00925.92
8.1.270.0060.01023.85
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0090.00022.09
8.1.230.0080.00419.14
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0060.00317.23
8.1.190.0030.00617.13
8.1.180.0000.00818.10
8.1.170.0030.00618.59
8.1.160.0040.00422.13
8.1.150.0040.00418.91
8.1.140.0040.00417.52
8.1.130.0030.00317.83
8.1.120.0050.00317.40
8.1.110.0050.00217.38
8.1.100.0040.00317.36
8.1.90.0040.00317.50
8.1.80.0000.00817.59
8.1.70.0030.00317.50
8.1.60.0040.00417.59
8.1.50.0080.00017.45
8.1.40.0040.00417.43
8.1.30.0050.00317.66
8.1.20.0040.00417.68
8.1.10.0040.00417.58
8.1.00.0080.00017.57
8.0.300.0040.00418.77
8.0.290.0070.00016.88
8.0.280.0030.00318.42
8.0.270.0050.00317.17
8.0.260.0000.00617.26
8.0.250.0070.00017.08
8.0.240.0030.00616.96
8.0.230.0080.00017.01
8.0.220.0030.00316.86
8.0.210.0040.00416.91
8.0.200.0060.00017.06
8.0.190.0000.00917.11
8.0.180.0000.00717.05
8.0.170.0000.00917.09
8.0.160.0080.00016.95
8.0.150.0000.00816.91
8.0.140.0000.00716.96
8.0.130.0030.00313.42
8.0.120.0040.00416.98
8.0.110.0000.00716.91
8.0.100.0040.00416.87
8.0.90.0000.00716.84
8.0.80.0120.01116.87
8.0.70.0070.00016.95
8.0.60.0040.00416.94
8.0.50.0030.00616.98
8.0.30.0120.01017.16
8.0.20.0130.00617.40
8.0.10.0000.00816.99
8.0.00.0140.00416.97
7.4.330.0000.00515.12
7.4.320.0040.00416.52
7.4.300.0030.00616.53
7.4.290.0000.00816.46
7.4.280.0080.00016.54
7.4.270.0030.00316.47
7.4.260.0030.00316.52
7.4.250.0030.00516.59
7.4.240.0030.00516.50
7.4.230.0000.00716.66
7.4.220.0130.00716.54
7.4.210.0060.01216.58
7.4.200.0060.00316.46
7.4.160.0130.00316.43
7.4.150.0050.01317.40
7.4.140.0070.01017.86
7.4.130.0050.01316.58
7.4.120.0130.00416.64
7.4.110.0030.01416.69
7.4.100.0060.01216.48
7.4.90.0080.00816.46
7.4.80.0030.01616.50
7.4.70.0060.01116.59
7.4.60.0110.00816.41
7.4.50.0070.00816.35
7.4.40.0100.01016.05
7.4.30.0090.01216.10
7.4.20.0120.00816.47
7.4.10.0190.00016.27
7.4.00.0080.00915.99
7.3.330.0030.00313.46
7.3.320.0000.00613.26
7.3.310.0070.00016.36
7.3.300.0030.00316.46
7.3.290.0060.01316.47
7.3.280.0100.01016.42
7.3.270.0120.00617.40
7.3.260.0060.01616.64
7.3.250.0140.00716.54
7.3.240.0130.01116.39
7.3.230.0100.00716.50
7.3.210.0120.00716.55
7.3.200.0070.01419.39
7.3.190.0090.01216.71
7.3.180.0080.01016.44
7.3.170.0170.00316.25
7.3.160.0110.01016.44
7.3.150.0090.00916.46
7.3.140.0170.00716.54
7.3.130.0130.01116.27
7.3.120.0100.01015.59
7.3.110.0090.00915.55
7.3.100.0110.00615.52
7.3.90.0080.01015.73
7.3.80.0080.00915.57
7.3.70.0100.00815.59
7.3.60.0110.00515.54
7.3.50.0090.00715.50
7.3.40.0070.00915.61
7.3.30.0110.00615.59
7.3.20.0080.00616.59
7.3.10.0090.00916.45
7.3.00.0100.00516.52
7.2.330.0070.01116.63
7.2.320.0060.01616.89
7.2.310.0170.00316.35
7.2.300.0170.00816.61
7.2.290.0080.01216.71
7.2.280.0060.01316.48
7.2.270.0130.00616.46
7.2.260.0190.00316.71
7.2.250.0160.00316.58
7.2.240.0090.01015.71
7.2.230.0090.01115.81
7.2.220.0140.00616.00
7.2.210.0090.01115.87
7.2.200.0070.00715.70
7.2.190.0080.01015.80
7.2.180.0030.01615.81
7.2.170.0060.01315.85
7.2.160.0130.00415.65
7.2.150.0110.00816.94
7.2.140.0110.00616.78
7.2.130.0130.00516.71
7.2.120.0040.01216.88
7.2.110.0080.01116.63
7.2.100.0100.00716.75
7.2.90.0070.01116.81
7.2.80.0100.00916.78
7.2.70.0080.01016.66
7.2.60.0070.01016.70
7.2.50.0120.00816.83
7.2.40.0090.01016.88
7.2.30.0130.01016.84
7.2.20.0090.01116.77
7.2.10.0110.00716.60
7.2.00.0070.00717.72
7.1.330.0150.00415.67
7.1.320.0070.01115.51
7.1.310.0110.00515.66
7.1.300.0090.00815.69
7.1.290.0080.00915.53
7.1.280.0110.00515.51
7.1.270.0090.00715.52
7.1.260.0080.00815.48
7.1.250.0090.00815.56
7.1.240.0080.01215.26
7.1.230.0100.00915.18
7.1.220.0090.00915.30
7.1.210.0090.00915.53
7.1.200.0150.00615.41
7.1.190.0090.00915.55
7.1.180.0140.00415.39
7.1.170.0190.00815.31
7.1.160.0090.01215.38
7.1.150.0070.01715.34
7.1.140.0110.01115.33
7.1.130.0130.00615.32
7.1.120.0130.00715.40
7.1.110.0090.00915.52
7.1.100.0460.00515.96
7.1.90.0060.01215.55
7.1.80.0150.00415.47
7.1.70.0100.00416.23
7.1.60.0070.01217.45
7.1.50.0060.01216.05
7.1.40.0110.00815.16
7.1.30.0130.00515.45
7.1.20.0150.00315.45
7.1.10.0120.01015.32
7.1.00.0100.03818.80
7.0.330.0040.01514.77
7.0.320.0040.01414.93
7.0.310.0130.01014.98
7.0.300.0070.01115.18
7.0.290.0120.00615.13
7.0.280.0190.00015.00
7.0.270.0110.00814.84
7.0.260.0120.00815.08
7.0.250.0070.01115.04
7.0.240.0190.01114.88
7.0.230.0070.01114.94
7.0.220.0200.00315.15
7.0.210.0160.00315.02
7.0.200.0090.00415.91
7.0.190.0140.00415.07
7.0.180.0140.00314.84
7.0.170.0140.00514.96
7.0.160.0130.00514.94
7.0.150.0090.01115.04
7.0.140.0080.04018.61
7.0.130.0100.01314.94
7.0.120.0180.00915.10
7.0.110.0130.00814.87
7.0.100.0160.00714.86
7.0.90.0170.00615.13
7.0.80.0070.01115.06
7.0.70.0080.00814.97
7.0.60.0180.04517.45
7.0.50.0070.04016.46
7.0.40.0140.04217.61
7.0.30.0150.04917.50
7.0.20.0260.04017.47
7.0.10.0160.04917.59
7.0.00.0080.04017.58
5.6.400.0090.01215.74
5.6.390.0150.00515.89
5.6.380.0140.01415.66
5.6.370.0070.01716.08
5.6.360.0170.00415.79
5.6.350.0060.01815.83
5.6.340.0160.01315.88
5.6.330.0130.00715.83
5.6.320.0170.00315.70
5.6.310.0160.00615.93
5.6.300.0070.01315.51
5.6.290.0080.01215.99
5.6.280.0070.04418.27
5.6.270.0140.01215.70
5.6.260.0130.00915.67
5.6.250.0070.01315.90
5.6.240.0100.01015.82
5.6.230.0120.01216.07
5.6.220.0140.00715.91
5.6.210.0130.04218.16
5.6.200.0120.02216.99
5.6.190.0060.04118.09
5.6.180.0150.05018.19
5.6.170.0220.04018.19
5.6.160.0080.04818.15
5.6.150.0080.02816.94
5.6.140.0090.04617.01
5.6.130.0050.03116.86
5.6.120.0100.04618.49
5.6.110.0100.04918.36
5.6.100.0160.03618.35
5.6.90.0120.03918.36
5.6.80.0100.02418.02
5.6.70.2250.02218.11
5.6.60.0080.01215.54
5.6.50.0170.00315.82
5.6.40.0040.02115.57
5.6.30.0080.01115.73
5.6.20.0130.00715.80
5.6.10.0110.01115.70
5.6.00.0160.00415.61
5.5.380.0090.01115.51
5.5.370.0190.00615.68
5.5.360.0130.00915.61
5.5.350.0050.03717.96
5.5.340.0120.03316.93
5.5.330.0110.02417.93
5.5.320.0240.04217.92
5.5.310.0220.05018.04
5.5.300.0070.02516.90
5.5.290.0110.04416.71
5.5.280.0100.04718.23
5.5.270.0120.04518.26
5.5.260.0080.04718.41
5.5.250.0150.02818.11
5.5.240.0090.04718.01
5.5.230.0050.01415.71
5.5.220.0160.00615.86
5.5.210.0120.00915.73
5.5.200.0070.01415.88
5.5.190.0130.00715.75
5.5.180.0110.01115.73
5.5.170.0140.00715.38
5.5.160.0000.02015.82
5.5.150.0080.01115.87
5.5.140.0040.01415.77
5.5.130.0160.00415.95
5.5.120.0110.00715.70
5.5.110.0150.00915.71
5.5.100.0120.00915.75
5.5.90.0140.00615.86
5.5.80.0110.00815.62
5.5.70.0080.01215.84
5.5.60.0030.01815.72
5.5.50.0080.01315.82
5.5.40.0100.01015.43
5.5.30.0100.01015.54
5.5.20.0070.01115.95
5.5.10.0090.01215.62
5.5.00.0060.01315.61
5.4.450.0100.02915.89
5.4.440.0170.02416.09
5.4.430.0120.02816.10
5.4.420.0180.02416.10
5.4.410.0230.01915.97
5.4.400.0140.02315.92
5.4.390.0090.02616.04
5.4.380.0170.03215.61
5.4.370.0320.02715.53
5.4.360.0170.03215.71
5.4.350.0220.02915.55
5.4.340.0290.02915.57
5.4.330.0070.00712.53
5.4.320.0050.02312.55
5.4.310.0040.02512.47
5.4.300.0050.02412.52
5.4.290.0090.02112.48
5.4.280.0090.01912.55
5.4.270.0090.02012.37
5.4.260.0090.02012.42
5.4.250.0080.02112.42
5.4.240.0070.02112.60
5.4.230.0110.01912.51
5.4.220.0090.02212.55
5.4.210.0050.02312.56
5.4.200.0040.02512.50
5.4.190.0080.02012.47
5.4.180.0100.02112.51
5.4.170.0050.02312.52
5.4.160.0070.02112.41
5.4.150.0080.02112.48
5.4.140.0080.02612.25
5.4.130.0070.02212.25
5.4.120.0060.02212.35
5.4.110.0080.02012.30
5.4.100.0080.02112.36
5.4.90.0060.02512.25
5.4.80.0090.02012.25
5.4.70.0040.02412.33
5.4.60.0060.02312.26
5.4.50.0080.02212.35
5.4.40.0090.02012.24
5.4.30.0050.02312.33
5.4.20.0110.01912.34
5.4.10.0060.02212.30
5.4.00.0050.02412.05
5.3.290.0070.02313.13
5.3.280.0070.02312.89
5.3.270.0080.02212.98
5.3.260.0070.02213.05
5.3.250.0090.02012.95
5.3.240.0040.02512.85
5.3.230.0060.02512.88
5.3.220.0070.02612.92
5.3.210.0080.02212.82
5.3.200.0060.02312.85
5.3.190.0060.02412.84
5.3.180.0080.02112.92
5.3.170.0070.02513.01
5.3.160.0080.03113.02
5.3.150.0080.02912.99
5.3.140.0120.02512.92
5.3.130.0070.02412.95
5.3.120.0060.02412.97
5.3.110.0080.02312.96
5.3.100.0080.02512.69
5.3.90.0090.02112.68
5.3.80.0060.02712.53
5.3.70.0050.02512.60
5.3.60.0120.03012.59
5.3.50.0060.03412.60
5.3.40.0090.03012.54
5.3.30.0090.02712.57
5.3.20.0070.02612.46
5.3.10.0050.02412.29
5.3.00.0110.01812.35
5.2.170.0050.02410.71
5.2.160.0050.02010.72
5.2.150.0020.02210.73
5.2.140.0060.01910.64
5.2.130.0050.01810.63
5.2.120.0050.01810.59
5.2.110.0060.01810.67
5.2.100.0060.01710.59
5.2.90.0020.02110.56
5.2.80.0030.02710.62
5.2.70.0050.02510.67
5.2.60.0080.01610.47
5.2.50.0070.01710.56
5.2.40.0020.02010.51
5.2.30.0050.01910.54
5.2.20.0040.02010.50
5.2.10.0080.01510.42
5.2.00.0050.01810.22
5.1.60.0050.0209.62
5.1.50.0060.0159.69
5.1.40.0070.0219.73
5.1.30.0070.0229.85
5.1.20.0020.0249.81
5.1.10.0070.0139.63
5.1.00.0040.0169.58
5.0.50.0020.0168.40
5.0.40.0020.0158.33
5.0.30.0030.0208.24
5.0.20.0030.0158.22
5.0.10.0030.0138.21
5.0.00.0010.0208.21
4.4.90.0050.0077.46
4.4.80.0020.0107.45
4.4.70.0040.0097.45
4.4.60.0020.0107.45
4.4.50.0040.0097.46
4.4.40.0040.0147.43
4.4.30.0030.0137.45
4.4.20.0030.0137.49
4.4.10.0060.0107.50
4.4.00.0040.0177.45
4.3.110.0020.0097.41
4.3.100.0040.0077.40
4.3.90.0050.0077.39
4.3.80.0030.0157.36
4.3.70.0020.0097.38
4.3.60.0030.0097.38
4.3.50.0010.0127.38
4.3.40.0010.0167.34
4.3.30.0030.0106.74
4.3.20.0030.0096.73
4.3.10.0010.0116.71
4.3.00.0020.01114.19

preferences:
79.87 ms | 401 KiB | 5 Q