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], $var3, 1)); echo "trying the binary\n"; var_dump(poor_mans_strcmp($arr1[0], $var4, 1)); function poor_mans_strcmp($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)
8.3.60.0090.00618.52
8.3.50.0120.01022.83
8.3.40.0080.00818.96
8.3.30.0030.01019.17
8.3.20.0110.00020.30
8.3.10.0000.00823.40
8.3.00.0030.00619.38
8.2.180.0170.00716.63
8.2.170.0070.01422.96
8.2.160.0100.00320.38
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0050.00326.16
8.2.120.0040.00421.04
8.2.110.0180.00020.43
8.2.100.0090.00317.74
8.2.90.0000.00818.34
8.2.80.0000.00817.97
8.2.70.0040.00417.75
8.2.60.0050.00317.93
8.2.50.0050.00318.07
8.2.40.0040.00418.28
8.2.30.0060.00318.26
8.2.20.0040.00417.70
8.2.10.0050.00218.23
8.2.00.0040.00417.65
8.1.280.0160.00025.92
8.1.270.0030.00623.87
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0040.00422.20
8.1.230.0030.00720.90
8.1.220.0000.00917.78
8.1.210.0000.00818.85
8.1.200.0070.00317.35
8.1.190.0080.00017.23
8.1.180.0040.00418.10
8.1.170.0030.00618.46
8.1.160.0030.00522.11
8.1.150.0040.00418.93
8.1.140.0070.00017.59
8.1.130.0060.00317.77
8.1.120.0000.00717.41
8.1.110.0000.00817.53
8.1.100.0030.00517.42
8.1.90.0040.00417.42
8.1.80.0000.00817.51
8.1.70.0050.00217.44
8.1.60.0050.00517.66
8.1.50.0050.00317.51
8.1.40.0060.00317.58
8.1.30.0000.00817.55
8.1.20.0000.00717.73
8.1.10.0040.00417.59
8.1.00.0030.00517.56
8.0.300.0000.00820.22
8.0.290.0000.00716.88
8.0.280.0030.00318.45
8.0.270.0030.00317.18
8.0.260.0030.00317.17
8.0.250.0040.00417.09
8.0.240.0070.00017.11
8.0.230.0070.00016.95
8.0.220.0000.00716.96
8.0.210.0070.00017.04
8.0.200.0050.00217.03
8.0.190.0070.00016.92
8.0.180.0030.00517.02
8.0.170.0050.00317.03
8.0.160.0040.00416.88
8.0.150.0000.00816.87
8.0.140.0040.00416.96
8.0.130.0020.00513.42
8.0.120.0030.00616.92
8.0.110.0040.00416.89
8.0.100.0000.00717.00
8.0.90.0000.00717.01
8.0.80.0120.00916.89
8.0.70.0000.00717.06
8.0.60.0000.00817.00
8.0.50.0070.00016.99
8.0.30.0130.00616.95
8.0.20.0100.00917.43
8.0.10.0070.00017.05
8.0.00.0130.00616.72
7.4.330.0020.00215.09
7.4.320.0000.00716.63
7.4.300.0000.00716.64
7.4.290.0030.00316.54
7.4.280.0030.00516.49
7.4.270.0000.00716.54
7.4.260.0030.00316.66
7.4.250.0030.00516.60
7.4.240.0000.00716.57
7.4.230.0070.00016.48
7.4.220.0030.01616.74
7.4.210.0040.01216.56
7.4.200.0040.00416.62
7.4.160.0120.00616.53
7.4.150.0090.00917.40
7.4.140.0130.00317.86
7.4.130.0130.00516.63
7.4.120.0130.00516.56
7.4.110.0140.00316.43
7.4.100.0090.00916.70
7.4.90.0080.01716.42
7.4.80.0130.01016.54
7.4.70.0150.00616.52
7.4.60.0110.00716.35
7.4.50.0060.00916.49
7.4.40.0080.00816.20
7.4.30.0080.00816.17
7.4.20.0120.00416.21
7.4.10.0110.00516.47
7.4.00.0090.00715.98
7.3.330.0040.00413.37
7.3.320.0030.00313.47
7.3.310.0040.00416.46
7.3.300.0070.00016.48
7.3.290.0110.00416.42
7.3.280.0070.00816.49
7.3.270.0100.00717.40
7.3.260.0150.01216.71
7.3.250.0090.00916.58
7.3.240.0120.00616.69
7.3.230.0030.01316.57
7.3.210.0180.00716.67
7.3.200.0130.01019.39
7.3.190.0090.00816.39
7.3.180.0120.00416.22
7.3.170.0120.00416.25
7.3.160.0040.01216.27
7.3.150.0130.00316.61
7.3.140.0130.00316.42
7.3.130.0190.00316.37
7.3.120.0090.01216.42
7.3.110.0110.01116.29
7.3.100.0070.01416.32
7.3.90.0100.00616.25
7.3.80.0100.00616.33
7.3.70.0090.00816.30
7.3.60.0070.01016.20
7.3.50.0060.01016.45
7.3.40.0030.01316.11
7.3.30.0060.01116.27
7.3.20.0070.01016.29
7.3.10.0080.00916.22
7.3.00.0030.01116.49
7.2.330.0140.00416.83
7.2.320.0070.01016.79
7.2.310.0090.00916.48
7.2.300.0050.01116.43
7.2.290.0100.00616.46
7.2.280.0060.01016.51
7.2.270.0100.00716.52
7.2.260.0090.01316.44
7.2.250.0080.00816.68
7.2.240.0150.00916.40
7.2.230.0070.01416.34
7.2.220.0030.01316.46
7.2.210.0080.00816.32
7.2.200.0030.01416.42
7.2.190.0150.00416.36
7.2.180.0060.01116.46
7.2.170.0060.01116.34
7.2.160.0070.01016.43
7.2.150.0130.00916.55
7.2.140.0130.00316.45
7.2.130.0090.00816.55
7.2.120.0040.01316.55
7.2.110.0080.00816.67
7.2.100.0050.01116.82
7.2.90.0120.00516.75
7.2.80.0110.00716.80
7.2.70.0100.00516.63
7.2.60.0120.01216.76
7.2.50.0090.00616.66
7.2.40.0090.00816.81
7.2.30.0080.00816.85
7.2.20.0100.00316.65
7.2.10.0020.01216.57
7.2.00.0060.01017.59
7.1.330.0090.00915.52
7.1.320.0060.00915.37
7.1.310.0130.00315.53
7.1.300.0100.00615.36
7.1.290.0060.01115.38
7.1.280.0060.01315.47
7.1.270.0160.00015.43
7.1.260.0110.00415.13
7.1.250.0130.00315.48
7.1.240.0060.00815.48
7.1.230.0040.01315.45
7.1.220.0080.00715.50
7.1.210.0030.01415.55
7.1.200.0060.01015.57
7.1.190.0060.00815.51
7.1.180.0080.00815.58
7.1.170.0100.00615.54
7.1.160.0080.00615.47
7.1.150.0040.00815.58
7.1.140.0090.00915.61
7.1.130.0060.00615.43
7.1.120.0060.00815.62
7.1.110.0050.01015.57
7.1.100.0170.00416.38
7.1.90.0080.00815.54
7.1.80.0090.00515.65
7.1.70.0040.01115.99
7.1.60.0080.00916.92
7.1.50.0030.01515.98
7.1.40.0060.00915.56
7.1.30.0100.00815.53
7.1.20.0080.00815.60
7.1.10.0120.00515.57
7.1.00.0050.03817.79
7.0.330.0090.00915.05
7.0.320.0070.00815.14
7.0.310.0060.00815.28
7.0.300.0020.01215.22
7.0.290.0050.00515.18
7.0.280.0050.00915.09
7.0.270.0050.00915.20
7.0.260.0070.00615.06
7.0.250.0060.00815.02
7.0.240.0140.00515.23
7.0.230.0060.00815.24
7.0.220.0050.00715.22
7.0.210.0030.00915.12
7.0.200.0050.00615.63
7.0.190.0120.00515.19
7.0.180.0020.01215.17
7.0.170.0040.01015.14
7.0.160.0080.00715.20
7.0.150.0030.01115.19
7.0.140.0050.02817.53
7.0.130.0080.00715.20
7.0.120.0110.00715.15
7.0.110.0120.00515.26
7.0.100.0110.00615.14
7.0.90.0090.00715.26
7.0.80.0060.00815.08
7.0.70.0100.00615.04
7.0.60.0090.01616.86
7.0.50.0060.01816.08
7.0.40.0060.02316.13
7.0.30.0090.03116.12
7.0.20.0100.03116.13
7.0.10.0020.02316.27
7.0.00.0030.03616.25
5.6.400.0110.00715.75
5.6.390.0110.00715.79
5.6.380.0100.00914.92
5.6.370.0060.00814.92
5.6.360.0090.00515.12
5.6.350.0060.00715.16
5.6.340.0100.00714.86
5.6.330.0020.01414.79
5.6.320.0080.00814.88
5.6.310.0050.01115.10
5.6.300.0090.00715.02
5.6.290.0030.01314.93
5.6.280.0080.03517.05
5.6.270.0090.01115.16
5.6.260.0090.00814.90
5.6.250.0090.01014.97
5.6.240.0080.00715.15
5.6.230.0090.00415.10
5.6.220.0080.00915.07
5.6.210.0050.02316.98
5.6.200.0030.03816.15
5.6.190.0060.02616.89
5.6.180.0110.02216.92
5.6.170.0090.03716.79
5.6.160.0070.02316.92
5.6.150.0110.01816.07
5.6.140.0060.01916.11
5.6.130.0090.01816.00
5.6.120.0050.03317.15
5.6.110.0090.01717.03
5.6.100.0160.02817.05
5.6.90.0090.01916.92
5.6.80.0100.01716.80
5.6.70.0100.00914.88
5.6.60.0080.00815.01
5.6.50.0100.00715.06
5.6.40.0080.00914.82
5.6.30.0160.00514.99
5.6.20.0130.00914.79
5.6.10.0130.00714.84
5.6.00.0130.01214.89
5.5.380.0050.00913.42
5.5.370.0030.01413.61
5.5.360.0050.01013.34
5.5.350.0110.02915.68
5.5.340.0110.01914.78
5.5.330.0060.01915.71
5.5.320.0110.02315.69
5.5.310.0150.01815.83
5.5.300.0050.03314.94
5.5.290.0090.02515.08
5.5.280.0060.02615.84
5.5.270.0070.02715.86
5.5.260.0060.02015.89
5.5.250.0060.03215.82
5.5.240.0140.02815.57
5.5.230.0080.00513.51
5.5.220.0180.00513.46
5.5.210.0060.01013.41
5.5.200.0100.00513.47
5.5.190.0110.00913.21
5.5.180.0060.00813.23
5.5.170.0050.00913.33
5.5.160.0150.00613.40
5.5.150.0110.00713.27
5.5.140.0100.00713.37
5.5.130.0090.00513.31
5.5.120.0070.00813.29
5.5.110.0120.00513.47
5.5.100.0120.00813.08
5.5.90.0050.01013.26
5.5.80.0070.01213.35
5.5.70.0080.01013.42
5.5.60.0100.00813.44
5.5.50.0080.01113.33
5.5.40.0110.00813.33
5.5.30.0070.00813.32
5.5.20.0190.00313.46
5.5.10.0190.01113.38
5.5.00.0220.00513.49
5.4.450.0100.01614.30
5.4.440.0140.02214.39
5.4.430.0150.02014.30
5.4.420.0120.02714.30
5.4.410.0090.02514.41
5.4.400.0090.02914.10
5.4.390.0100.01814.18
5.4.380.0080.02014.08
5.4.370.0170.02614.18
5.4.360.0100.02514.25
5.4.350.0160.02714.23
5.4.340.0130.02814.13
5.4.330.0160.00311.77
5.4.320.0150.01814.00
5.4.310.0110.02514.05
5.4.300.0140.02614.28
5.4.290.0130.01714.16
5.4.280.0150.02614.18
5.4.270.0180.02414.21
5.4.260.0150.02414.23
5.4.250.0140.02714.15
5.4.240.0170.02214.13
5.4.230.0110.02314.06
5.4.220.0120.03114.08
5.4.210.0140.03314.28
5.4.200.0180.02414.13
5.4.190.0130.02514.27
5.4.180.0140.02814.20
5.4.170.0150.02714.29
5.4.160.0100.03014.17
5.4.150.0130.02414.19
5.4.140.0070.02813.30
5.4.130.0180.02113.27
5.4.120.0160.01613.36
5.4.110.0120.01713.43
5.4.100.0180.01413.46
5.4.90.0180.01313.36
5.4.80.0100.03113.28
5.4.70.0140.02613.36
5.4.60.0090.02313.46
5.4.50.0070.02113.27
5.4.40.0090.01913.32
5.4.30.0110.01613.38
5.4.20.0110.01713.28
5.4.10.0100.01713.26
5.4.00.0120.01713.12
5.3.290.0100.01812.98
5.3.280.0100.01912.84
5.3.270.0090.01912.75
5.3.260.0150.01812.79
5.3.250.0100.01612.81
5.3.240.0110.02012.67
5.3.230.0080.02012.73
5.3.220.0070.01812.72
5.3.210.0090.01712.77
5.3.200.0130.01912.75
5.3.190.0110.01612.84
5.3.180.0050.01912.78
5.3.170.0120.01612.88
5.3.160.0100.01912.91
5.3.150.0060.01712.81
5.3.140.0090.01612.79
5.3.130.0110.01812.79
5.3.120.0060.02112.71
5.3.110.0110.01712.82
5.3.100.0100.01512.65
5.3.90.0080.01912.54
5.3.80.0070.01912.55
5.3.70.0070.02112.60
5.3.60.0090.01612.52
5.3.50.0150.01312.56
5.3.40.0190.01812.60
5.3.30.0190.01812.68
5.3.20.0210.01712.58
5.3.10.0250.01512.21
5.3.00.0230.01712.21
5.2.170.0070.01611.66
5.2.160.0050.01711.66
5.2.150.0130.01311.62
5.2.140.0210.01411.59
5.2.130.0140.01511.57
5.2.120.0140.01511.69
5.2.110.0160.01511.62
5.2.100.0140.01011.59
5.2.90.0120.01411.62
5.2.80.0130.01211.57
5.2.70.0160.01111.56
5.2.60.0140.01211.55
5.2.50.0090.01711.56
5.2.40.0070.01711.59
5.2.30.0070.01811.56
5.2.20.0090.01411.53
5.2.10.0110.01211.51
5.2.00.0080.01511.52
5.1.60.0100.01311.28
5.1.50.0090.01311.24
5.1.40.0110.01111.29
5.1.30.0060.01511.35
5.1.20.0140.01011.32
5.1.10.0120.00711.35
5.1.00.0100.01311.26
5.0.50.0060.01211.03
5.0.40.0050.01010.99
5.0.30.0110.01210.98
5.0.20.0110.01010.98
5.0.10.0080.01110.98
5.0.00.0120.01310.98
4.4.90.0040.00710.98
4.4.80.0030.00710.98
4.4.70.0080.00410.98
4.4.60.0040.00710.98
4.4.50.0060.00810.98
4.4.40.0100.00910.98
4.4.30.0040.00710.98
4.4.20.0030.00910.98
4.4.10.0070.00410.98
4.4.00.0020.01410.98
4.3.110.0050.00810.98
4.3.100.0040.00710.98
4.3.90.0120.00710.98
4.3.80.0070.01410.98
4.3.70.0090.00710.98
4.3.60.0040.00810.98
4.3.50.0120.00610.98
4.3.40.0100.01010.98
4.3.30.0050.01110.98
4.3.20.0060.00910.98
4.3.10.0050.00910.98
4.3.00.0040.00910.98

preferences:
47.9 ms | 401 KiB | 5 Q