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) { # 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)
8.3.60.0110.00716.88
8.3.50.0090.00922.95
8.3.40.0070.01118.93
8.3.30.0070.00719.07
8.3.20.0000.00720.29
8.3.10.0040.00423.66
8.3.00.0050.00319.50
8.2.180.0080.00816.63
8.2.170.0100.00522.96
8.2.160.0090.00920.52
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0000.00720.98
8.2.110.0040.00420.56
8.2.100.0080.00418.34
8.2.90.0050.00319.30
8.2.80.0000.00817.97
8.2.70.0040.00417.61
8.2.60.0000.00818.05
8.2.50.0060.00318.07
8.2.40.0050.00318.00
8.2.30.0050.00318.21
8.2.20.0000.00817.84
8.2.10.0050.00318.07
8.2.00.0060.00317.77
8.1.280.0070.00725.92
8.1.270.0080.00023.87
8.1.260.0070.00026.35
8.1.250.0050.00228.09
8.1.240.0030.00622.15
8.1.230.0070.00419.01
8.1.220.0040.00417.76
8.1.210.0000.00818.77
8.1.200.0000.00917.25
8.1.190.0080.00017.22
8.1.180.0030.00518.10
8.1.170.0030.00618.64
8.1.160.0040.00422.06
8.1.150.0070.00018.81
8.1.140.0000.00817.48
8.1.130.0030.00317.81
8.1.120.0040.00417.53
8.1.110.0040.00417.46
8.1.100.0040.00417.46
8.1.90.0030.00317.45
8.1.80.0000.00717.50
8.1.70.0040.00417.50
8.1.60.0030.00517.49
8.1.50.0030.00517.55
8.1.40.0030.00617.57
8.1.30.0090.00017.65
8.1.20.0000.00817.56
8.1.10.0030.00517.49
8.1.00.0070.00017.48
8.0.300.0000.00718.77
8.0.290.0000.00716.88
8.0.280.0000.00718.39
8.0.270.0070.00017.26
8.0.260.0030.00317.29
8.0.250.0070.00017.05
8.0.240.0070.00017.05
8.0.230.0030.00317.08
8.0.220.0020.00516.96
8.0.210.0020.00516.91
8.0.200.0070.00017.11
8.0.190.0050.00317.04
8.0.180.0000.00716.90
8.0.170.0080.00017.07
8.0.160.0000.00816.86
8.0.150.0070.00316.91
8.0.140.0000.00716.94
8.0.130.0000.00613.41
8.0.120.0050.00317.01
8.0.110.0020.00516.96
8.0.100.0020.00517.00
8.0.90.0050.00216.82
8.0.80.0130.00716.93
8.0.70.0070.00016.91
8.0.60.0040.00416.86
8.0.50.0050.00317.01
8.0.30.0090.01216.96
8.0.20.0080.01517.40
8.0.10.0040.00417.16
8.0.00.0100.01016.90
7.4.330.0000.00515.09
7.4.320.0030.00316.48
7.4.300.0000.00616.55
7.4.290.0030.00316.51
7.4.280.0040.00416.61
7.4.270.0000.00716.55
7.4.260.0000.00716.46
7.4.250.0000.00816.52
7.4.240.0020.00516.63
7.4.230.0000.00716.43
7.4.220.0090.01016.70
7.4.210.0120.00616.56
7.4.200.0080.00016.61
7.4.160.0160.00016.55
7.4.150.0170.00017.40
7.4.140.0170.00117.86
7.4.130.0130.00516.52
7.4.120.0080.00816.63
7.4.110.0070.01016.53
7.4.100.0120.00616.57
7.4.90.0150.00916.61
7.4.80.0130.00616.73
7.4.70.0030.01516.66
7.4.60.0080.01016.44
7.4.50.0090.00516.46
7.4.40.0130.00316.17
7.4.30.0140.00316.21
7.4.20.0040.01416.32
7.4.10.0090.01516.26
7.4.00.0100.00815.89
7.3.330.0000.00613.46
7.3.320.0000.00513.46
7.3.310.0040.00416.49
7.3.300.0030.00316.31
7.3.290.0070.01116.45
7.3.280.0100.00716.43
7.3.270.0090.00917.40
7.3.260.0130.00616.38
7.3.250.0060.01316.51
7.3.240.0090.01216.45
7.3.230.0120.00616.43
7.3.210.0160.00816.54
7.3.200.0100.01019.39
7.3.190.0080.01616.54
7.3.180.0140.00716.31
7.3.170.0090.01016.39
7.3.160.0000.02016.30
7.3.150.0070.01116.42
7.3.140.0060.01716.26
7.3.130.0190.00316.28
7.3.120.0130.00516.46
7.3.110.0090.00916.25
7.3.100.0030.01616.32
7.3.90.0110.00716.27
7.3.80.0040.01516.20
7.3.70.0100.01016.26
7.3.60.0140.00516.25
7.3.50.0120.00616.31
7.3.40.0060.01216.34
7.3.30.0120.00616.30
7.3.20.0090.01116.15
7.3.10.0190.00616.24
7.3.00.0070.00916.64
7.2.330.0070.01016.81
7.2.320.0130.00316.46
7.2.310.0100.00916.67
7.2.300.0160.00316.53
7.2.290.0070.01316.49
7.2.280.0100.01016.58
7.2.270.0160.01216.34
7.2.260.0110.00816.63
7.2.250.0110.00716.79
7.2.240.0120.00616.58
7.2.230.0170.00316.53
7.2.220.0120.00616.60
7.2.210.0150.00316.48
7.2.200.0130.00616.51
7.2.190.0110.00816.55
7.2.180.0080.00816.45
7.2.170.0120.00816.39
7.2.160.0100.01016.37
7.2.150.0080.01216.51
7.2.140.0070.01416.57
7.2.130.0090.00816.72
7.2.120.0090.00916.83
7.2.110.0100.00616.74
7.2.100.0030.01316.65
7.2.90.0060.01016.77
7.2.80.0160.00516.67
7.2.70.0130.00716.77
7.2.60.0100.00616.73
7.2.50.0110.00716.67
7.2.40.0120.00716.88
7.2.30.0210.00616.78
7.2.20.0090.00916.59
7.2.10.0070.01116.74
7.2.00.0100.00917.76
7.1.330.0090.00615.60
7.1.320.0120.00615.48
7.1.310.0130.00315.55
7.1.300.0080.00815.59
7.1.290.0050.01415.41
7.1.280.0080.01115.15
7.1.270.0090.00915.30
7.1.260.0110.00515.39
7.1.250.0070.00815.47
7.1.240.0070.00715.55
7.1.230.0030.01015.50
7.1.220.0040.00915.46
7.1.210.0060.00815.55
7.1.200.0120.00615.63
7.1.190.0060.01115.53
7.1.180.0160.00515.66
7.1.170.0060.00815.54
7.1.160.0050.00715.36
7.1.150.0070.00815.48
7.1.140.0070.00715.64
7.1.130.0080.00415.56
7.1.120.0110.00315.57
7.1.110.0060.00915.70
7.1.100.0130.00716.31
7.1.90.0130.00615.58
7.1.80.0030.01315.59
7.1.70.0060.00816.17
7.1.60.0100.01016.85
7.1.50.0100.01116.16
7.1.40.0070.00815.46
7.1.30.0120.00515.46
7.1.20.0100.00715.45
7.1.10.0090.01015.61
7.1.00.0080.02817.93
7.0.330.0080.00715.20
7.0.320.0120.00315.03
7.0.310.0040.00915.03
7.0.300.0100.00315.31
7.0.290.0040.00915.29
7.0.280.0070.00815.26
7.0.270.0110.00715.25
7.0.260.0070.00715.14
7.0.250.0100.00315.13
7.0.240.0030.01115.33
7.0.230.0110.00715.12
7.0.220.0090.00415.20
7.0.210.0050.00915.24
7.0.200.0090.00415.72
7.0.190.0060.00815.17
7.0.180.0080.00715.29
7.0.170.0030.00915.12
7.0.160.0090.00615.22
7.0.150.0110.00615.40
7.0.140.0050.02917.48
7.0.130.0090.00215.19
7.0.120.0070.00815.43
7.0.110.0090.00915.30
7.0.100.0010.01515.28
7.0.90.0090.00715.17
7.0.80.0050.01315.29
7.0.70.0060.01215.27
7.0.60.0080.01916.83
7.0.50.0040.02116.05
7.0.40.0060.03416.01
7.0.30.0210.02816.21
7.0.20.0110.01916.16
7.0.10.0070.01916.30
7.0.00.0070.03416.17
5.6.400.0070.01315.77
5.6.390.0110.01115.91
5.6.380.0090.00915.12
5.6.370.0080.00714.95
5.6.360.0070.00815.30
5.6.350.0050.01015.01
5.6.340.0060.01115.04
5.6.330.0090.00615.06
5.6.320.0130.00615.16
5.6.310.0060.01315.09
5.6.300.0000.01615.29
5.6.290.0080.01115.10
5.6.280.0060.03017.03
5.6.270.0040.01315.16
5.6.260.0080.01115.05
5.6.250.0050.01015.07
5.6.240.0090.00915.02
5.6.230.0080.01015.15
5.6.220.0110.00715.11
5.6.210.0080.01916.96
5.6.200.0080.01716.09
5.6.190.0040.03717.07
5.6.180.0110.02916.96
5.6.170.0190.02816.86
5.6.160.0110.03316.86
5.6.150.0090.03316.09
5.6.140.0070.02316.11
5.6.130.0090.03016.06
5.6.120.0110.02617.02
5.6.110.0090.03317.01
5.6.100.0070.02117.10
5.6.90.0100.02617.11
5.6.80.0100.03116.71
5.6.70.0060.00915.23
5.6.60.0080.00615.02
5.6.50.0050.01315.24
5.6.40.0080.00815.21
5.6.30.0070.00915.14
5.6.20.0080.00814.96
5.6.10.0110.00615.15
5.6.00.0100.00815.03
5.5.380.0110.00713.49
5.5.370.0100.01013.34
5.5.360.0100.00413.49
5.5.350.0140.03215.79
5.5.340.0050.01914.88
5.5.330.0040.02915.61
5.5.320.0100.02215.81
5.5.310.0180.03015.66
5.5.300.0050.01915.05
5.5.290.0100.03015.08
5.5.280.0040.02415.83
5.5.270.0070.03415.95
5.5.260.0070.03215.93
5.5.250.0100.01815.88
5.5.240.0050.02115.75
5.5.230.0060.00813.34
5.5.220.0070.01113.40
5.5.210.0090.00513.38
5.5.200.0050.00913.61
5.5.190.0100.00713.37
5.5.180.0080.00813.59
5.5.170.0090.00613.39
5.5.160.0070.01013.37
5.5.150.0100.00713.50
5.5.140.0080.00813.36
5.5.130.0060.01313.56
5.5.120.0100.00613.45
5.5.110.0060.00913.51
5.5.100.0100.00513.60
5.5.90.0070.01113.60
5.5.80.0050.01213.33
5.5.70.0060.01213.31
5.5.60.0100.00813.47
5.5.50.0070.00713.48
5.5.40.0070.00813.43
5.5.30.0030.01313.46
5.5.20.0050.01113.43
5.5.10.0060.01113.68
5.5.00.0080.00613.53
5.4.450.0120.02214.35
5.4.440.0110.02314.44
5.4.430.0100.02014.36
5.4.420.0070.01714.22
5.4.410.0090.02014.41
5.4.400.0040.01914.22
5.4.390.0050.02014.29
5.4.380.0140.03014.10
5.4.370.0180.02614.16
5.4.360.0150.02114.09
5.4.350.0160.02014.14
5.4.340.0120.02414.05
5.4.330.0030.00811.95
5.4.320.0080.01712.07
5.4.310.0050.01712.07
5.4.300.0050.01712.11
5.4.290.0070.01512.07
5.4.280.0060.01912.01
5.4.270.0040.01912.00
5.4.260.0030.02112.10
5.4.250.0070.01612.03
5.4.240.0080.01512.06
5.4.230.0050.01711.87
5.4.220.0070.01511.98
5.4.210.0080.01511.93
5.4.200.0060.01612.09
5.4.190.0050.01612.15
5.4.180.0060.01612.07
5.4.170.0070.01711.97
5.4.160.0060.01712.07
5.4.150.0050.02111.93
5.4.140.0040.02011.87
5.4.130.0060.01611.94
5.4.120.0040.01811.91
5.4.110.0060.01612.04
5.4.100.0060.01611.77
5.4.90.0060.01811.82
5.4.80.0080.01811.84
5.4.70.0040.01811.89
5.4.60.0050.01811.95
5.4.50.0060.01811.85
5.4.40.0040.01911.96
5.4.30.0040.02211.81
5.4.20.0080.01511.94
5.4.10.0100.01111.95
5.4.00.0080.01811.67
5.3.290.0050.02012.30
5.3.280.0090.01512.12
5.3.270.0040.02112.19
5.3.260.0060.01712.24
5.3.250.0050.01912.26
5.3.240.0060.01512.04
5.3.230.0090.01912.22
5.3.220.0060.01712.08
5.3.210.0080.01612.10
5.3.200.0060.01911.98
5.3.190.0070.01612.15
5.3.180.0060.01812.29
5.3.170.0050.01812.30
5.3.160.0060.01812.15
5.3.150.0070.01712.21
5.3.140.0070.01812.19
5.3.130.0090.01612.16
5.3.120.0050.01812.18
5.3.110.0030.02112.29
5.3.100.0070.01711.99
5.3.90.0070.02011.97
5.3.80.0050.01911.87
5.3.70.0040.01911.87
5.3.60.0060.01811.94
5.3.50.0080.01411.84
5.3.40.0090.01411.89
5.3.30.0060.01611.90
5.3.20.0060.01511.80
5.3.10.0080.01411.78
5.3.00.0060.01811.70
5.2.170.0030.01910.21
5.2.160.0060.01310.26
5.2.150.0060.01110.35
5.2.140.0040.01610.29
5.2.130.0050.01410.18
5.2.120.0050.01410.32
5.2.110.0070.01310.21
5.2.100.0040.01410.29
5.2.90.0060.01310.19
5.2.80.0040.01410.16
5.2.70.0080.01110.23
5.2.60.0070.01110.16
5.2.50.0040.01610.13
5.2.40.0040.01410.20
5.2.30.0070.01110.18
5.2.20.0080.01110.11
5.2.10.0060.0139.99
5.2.00.0040.0159.92
5.1.60.0030.0139.47
5.1.50.0060.0119.45
5.1.40.0070.0099.49
5.1.30.0090.0089.69
5.1.20.0070.0119.62
5.1.10.0060.0119.58
5.1.00.0040.0129.53
5.0.50.0030.0118.71
5.0.40.0020.0138.65
5.0.30.0030.0168.59
5.0.20.0060.0088.57
5.0.10.0040.0098.57
5.0.00.0020.0148.57
4.4.90.0040.0078.07
4.4.80.0020.0088.06
4.4.70.0040.0078.06
4.4.60.0030.0088.06
4.4.50.0040.0078.07
4.4.40.0040.0098.05
4.4.30.0030.0078.06
4.4.20.0050.0058.09
4.4.10.0050.0068.09
4.4.00.0020.0108.06
4.3.110.0030.0088.03
4.3.100.0030.0098.03
4.3.90.0020.0098.02
4.3.80.0050.0098.00
4.3.70.0060.0058.02
4.3.60.0020.0098.02
4.3.50.0020.0108.02
4.3.40.0010.0137.99
4.3.30.0010.0087.59
4.3.20.0020.0087.58
4.3.10.0030.0067.57
4.3.00.0010.00912.56

preferences:
39.71 ms | 400 KiB | 5 Q