3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump([ 'compared to empty' => [ "strcmp('', 'a')" => strcmp('', 'a'), "strcmp('', str_repeat('a', 2))" => strcmp('', str_repeat('a', 2)), "strcmp('', str_repeat('a', 8))" => strcmp('', str_repeat('a', 8)), ], 'same leading substring (no mismatch, but unequal length' => [ "strcmp('a', str_repeat('a', 2))" => strcmp('a', str_repeat('a', 2)), "strcmp('a', str_repeat('a', 8))" => strcmp('a', str_repeat('a', 8)), "strcmp('aaa', str_repeat('aaa', 2))" => strcmp('aaa', str_repeat('aaa', 2)), "strcmp('aaa', str_repeat('aaa', 8))" => strcmp('aaa', str_repeat('aaa', 8)), "strcmp('aaa', str_repeat('aaa', 20))" => strcmp('aaa', str_repeat('aaa', 20)), ], 'equal length parial match' => [ "strcmp('a', 'z')" => strcmp('a', 'z'), "strcmp('aaaa', 'aaaz')" => strcmp('aaaa', 'aaaz'), "strcmp('aaaaaa', 'aaazaa')" => strcmp('aaaaaa', 'aaazaa'), "strcmp('aaaaaa', 'aaazzz')" => strcmp('aaaaaa', 'aaazzz'), "strcmp(str_repeat('a', 16), str_repeat('a', 8) . str_repeat('z', 8))" => strcmp(str_repeat('a', 16), str_repeat('a', 8) . str_repeat('z', 8)), ], 'unequal length partial match' => [ "strcmp('a', 'za')" => strcmp('a', 'za'), "strcmp('a', 'az')" => strcmp('a', 'az'), "strcmp('aaa', 'aaza')" => strcmp('aaa', 'aaza'), "strcmp('aaa', 'aazz')" => strcmp('aaa', 'aazz'), "strcmp('aaa', 'az')" => strcmp('aaa', 'az'), "strcmp(str_repeat('a', 7), str_repeat('a', 7) . str_repeat('z', 7))" => strcmp(str_repeat('a', 7), str_repeat('a', 7) . str_repeat('z', 7)), ], 'equal length, no match' => [ "strcmp('a', 'z')" => strcmp('a', 'z'), "strcmp('aaa', 'zaa')" => strcmp('aaa', 'zaa'), "strcmp('aaa', 'zzz')" => strcmp('aaa', 'zzz'), "strcmp(str_repeat('a', 8), 'z' . str_repeat('a', 7))" => strcmp(str_repeat('a', 8), 'z' . str_repeat('a', 7)), "strcmp(str_repeat('a', 8), str_repeat('z', 8))" => strcmp(str_repeat('a', 8), str_repeat('z', 8)), ], 'unequal length, no match' => [ "strcmp('a', 'za')" => strcmp('a', 'za'), "strcmp('aaa', 'zaaaa')" => strcmp('aaa', 'zaaaa'), "strcmp('aaa', 'zzzzz')" => strcmp('aaa', 'zzzzz'), "strcmp(str_repeat('a', 8), 'z' . str_repeat('a', 8))" => strcmp(str_repeat('a', 8), 'z' . str_repeat('a', 8)), "strcmp(str_repeat('a', 8), str_repeat('z', 10))" => strcmp(str_repeat('a', 8), str_repeat('z', 10)), ] ]);

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)
8.5.00.0130.00820.04
8.4.150.0020.00014.05
8.4.140.0130.00817.42
8.4.130.0050.00517.88
8.4.120.0130.00720.57
8.4.110.0140.00724.16
8.4.100.0150.00617.99
8.4.90.0120.00817.78
8.4.80.0040.00717.86
8.4.70.0070.00117.61
8.4.60.0110.01018.72
8.4.50.0060.00617.56
8.4.40.0150.00617.59
8.4.30.0120.00920.75
8.4.20.0090.00919.69
8.4.10.0090.00918.47
8.3.280.0140.00918.52
8.3.270.0120.00816.56
8.3.260.0110.00916.91
8.3.250.0150.00419.06
8.3.240.0150.00416.58
8.3.230.0100.00916.86
8.3.220.0120.00617.21
8.3.210.0140.00616.78
8.3.200.0030.00616.65
8.3.190.0070.00618.86
8.3.180.0120.00918.28
8.3.170.0070.01116.57
8.3.160.0060.01316.82
8.3.150.0090.00916.69
8.3.140.0170.00516.71
8.3.130.0110.00917.60
8.3.120.0090.00517.67
8.3.110.0130.00618.82
8.3.100.0140.00216.73
8.3.90.0230.00816.63
8.3.80.0310.00516.67
8.3.70.0310.00316.65
8.3.60.0320.00516.55
8.3.50.0320.01016.64
8.3.40.0320.00717.45
8.3.30.0250.01017.33
8.3.20.0290.01017.29
8.3.10.0320.00417.43
8.3.00.0380.01017.49
8.2.290.0110.00820.25
8.2.280.0120.00718.54
8.2.270.0030.00616.45
8.2.260.0220.00617.32
8.2.250.0230.00517.52
8.2.240.0180.01116.80
8.2.230.0180.00719.55
8.2.220.0190.00320.31
8.2.210.0270.01016.44
8.2.200.0190.00816.45
8.2.190.0260.00716.58
8.2.180.0250.00216.38
8.2.170.0340.00517.54
8.2.160.0270.01017.56
8.2.150.0360.00517.54
8.2.140.0330.00517.54
8.2.130.0260.00817.49
8.2.120.0270.01417.51
8.2.110.0320.01317.59
8.2.100.0410.00517.48
8.2.90.0380.00517.41
8.2.80.0350.00517.42
8.2.70.0230.00917.43
8.2.60.0280.00317.40
8.2.50.0150.01417.51
8.2.40.0220.01017.65
8.2.30.0270.00617.29
8.2.20.0270.00717.46
8.2.10.0290.00717.41
8.2.00.0300.00817.57
8.1.330.0090.00718.48
8.1.320.0150.00816.15
8.1.310.0140.01516.14
8.1.300.0220.00917.15
8.1.290.0240.01515.89
8.1.280.0300.01016.13
8.1.270.0360.00817.24
8.1.260.0400.00317.25
8.1.250.0370.00317.29
8.1.240.0290.00517.28
8.1.230.0340.00317.31
8.1.220.0250.00917.23
8.1.210.0260.00917.19
8.1.200.0290.00517.13
8.1.190.0280.01217.19
8.1.180.0350.00517.14
8.1.170.0280.00817.26
8.1.160.0270.01017.25
8.1.150.0290.00817.25
8.1.140.0310.00717.07
8.1.130.0310.00717.25
8.1.120.0310.00917.17
8.1.110.0200.00417.16
8.1.100.0280.00917.39
8.1.90.0340.00717.26
8.1.80.0260.01417.21
8.1.70.0360.00517.32
8.1.60.0290.01117.26
8.1.50.0320.00617.21
8.1.40.0200.01017.21
8.1.30.0300.00317.42
8.1.20.0250.00617.39
8.1.10.0280.01317.29
8.1.00.0320.00817.12
8.0.300.0460.00016.31
8.0.290.0390.00016.39
8.0.280.0240.00916.33
8.0.270.0210.01116.45
8.0.260.0250.01416.64
8.0.250.0260.00016.54
8.0.240.0180.00016.52
8.0.230.0170.00816.40
8.0.220.0260.00316.45
8.0.210.0260.01016.46
8.0.200.0320.00416.60
8.0.190.0300.00616.71
8.0.180.0270.00916.69
8.0.170.0270.00916.45
8.0.160.0290.00716.47
8.0.150.0330.01016.25
8.0.140.0320.00716.35
8.0.130.0290.00616.39
8.0.120.0320.00316.71
8.0.110.0270.00916.54
8.0.100.0320.00316.49
8.0.90.0250.01116.30
8.0.80.0270.00916.45
8.0.70.0320.00316.41
8.0.60.0250.01116.46
8.0.50.0340.00416.27
8.0.30.0260.00316.36
8.0.20.0230.00716.65
8.0.10.0190.00916.82
8.0.00.0390.00016.51
7.4.330.0290.00016.43
7.4.320.0230.01116.11
7.4.300.0220.01216.21
7.4.290.0300.00416.46
7.4.280.0350.00016.34
7.4.270.0280.00616.34
7.4.260.0250.00916.45
7.4.250.0150.01516.30
7.4.240.0290.00716.30
7.4.230.0150.01516.06
7.4.220.0150.00416.20
7.4.210.0220.00316.21
7.4.200.0220.00416.08
7.4.190.0220.00416.23
7.4.180.0200.01316.35
7.4.160.0230.01016.42
7.4.150.0330.00015.96
7.4.140.0110.00516.17
7.4.130.0130.00416.06
7.4.120.0170.00815.85
7.4.110.0070.00716.21
7.4.100.0290.00416.31
7.4.90.0170.01416.21
7.4.80.0240.00416.33
7.4.70.0250.00716.07
7.4.60.0290.00415.90
7.4.50.0250.00715.83
7.4.40.0210.00816.02
7.4.30.0300.00315.88
7.4.20.0210.01116.06
7.4.10.0210.00715.97
7.4.00.0150.00016.18
7.3.330.0130.00416.01
7.3.320.0130.00216.09
7.3.310.0090.00615.80
7.3.300.0120.00316.14
7.3.290.0150.00016.01
7.3.280.0090.00615.95
7.3.270.0150.00315.95
7.3.260.0200.00616.02
7.3.250.0100.00516.01
7.3.240.0290.00416.01
7.3.230.0320.00016.24
7.3.220.0330.00016.21
7.3.210.0260.01015.94
7.3.200.0270.00415.86
7.3.190.0210.01315.88
7.3.180.0280.00615.64
7.3.170.0300.00316.00
7.3.160.0150.01515.95
7.3.150.0260.00515.96
7.3.140.0280.00316.00
7.3.130.0290.00016.05
7.3.120.0280.00615.79
7.3.110.0330.00315.86
7.3.100.0220.00715.87
7.3.90.0200.00315.87
7.3.80.0170.00815.57
7.3.70.0200.00816.10
7.3.60.0280.00416.05
7.3.50.0270.00516.28
7.3.40.0280.00416.23
7.3.30.0360.00315.89
7.3.20.0250.01317.85
7.3.10.0320.00717.68
7.3.00.0240.00418.00
7.2.340.0320.00016.12
7.2.330.0260.00716.25
7.2.320.0240.00816.20
7.2.310.0290.00316.10
7.2.300.0260.00416.16
7.2.290.0230.00516.06
7.2.280.0130.00916.05
7.2.270.0100.00516.39
7.2.260.0180.01516.05
7.2.250.0200.01216.05
7.2.240.0290.00415.93
7.2.230.0300.00316.07
7.2.220.0270.00616.39
7.2.210.0170.01716.28
7.2.200.0300.00416.33
7.2.190.0250.00816.21
7.2.180.0270.01416.02
7.2.170.0280.00716.19
7.2.160.0240.00916.44
7.2.150.0210.00418.11
7.2.140.0260.00618.23
7.2.130.0270.00918.29
7.2.120.0220.01117.97
7.2.110.0260.00618.35
7.2.100.0240.01018.00
7.2.90.0210.01218.09
7.2.80.0200.01218.13
7.2.70.0240.00818.04
7.2.60.0250.01118.10
7.2.50.0330.00018.23
7.2.40.0270.00518.36
7.2.30.0210.01418.05
7.2.20.0330.00818.21
7.2.10.0200.00718.37
7.2.00.0270.00018.36
7.1.330.0160.00816.90
7.1.320.0150.00716.92
7.1.310.0220.00716.83
7.1.300.0300.00317.09
7.1.290.0200.00616.89
7.1.280.0230.00717.00
7.1.270.0270.00316.94
7.1.260.0270.00416.85
7.1.250.0240.00616.84
7.1.240.0230.00817.13
7.1.230.0230.00916.83
7.1.220.0220.00716.79
7.1.210.0240.00517.09
7.1.200.0260.00617.04
7.1.190.0260.00417.07
7.1.180.0260.00316.73
7.1.170.0260.00316.89
7.1.160.0240.00516.88
7.1.150.0320.00616.87
7.1.140.0140.01716.97
7.1.130.0170.01316.93
7.1.120.0260.00316.89
7.1.110.0260.00316.84
7.1.100.0230.01116.88
7.1.90.0270.00316.82
7.1.80.0210.00717.16
7.1.70.0160.01216.28
7.1.60.0230.00916.89
7.1.50.0240.00516.72
7.1.40.0150.01517.11
7.1.30.0170.01217.03
7.1.20.0130.01616.91
7.1.10.0250.00416.95
7.1.00.0270.00316.79
7.0.330.0260.00016.63
7.0.320.0220.00316.75
7.0.310.0190.00516.72
7.0.300.0160.00816.62
7.0.290.0250.00416.55
7.0.280.0160.01616.69
7.0.270.0210.01016.20
7.0.260.0240.00816.82
7.0.250.0170.00916.82
7.0.240.0240.00016.96
7.0.230.0230.00316.45
7.0.220.0240.00016.85
7.0.210.0170.00716.89
7.0.200.0190.00716.71
7.0.190.0260.00616.53
7.0.180.0200.00716.33
7.0.170.0270.00416.65
7.0.160.0200.00616.75
7.0.150.0190.00616.65
7.0.140.0190.00716.71
7.0.130.0200.00616.62
7.0.120.0180.00616.67
7.0.110.0240.00016.65
7.0.100.0260.00316.70
7.0.90.0270.00316.40
7.0.80.0240.00816.58
7.0.70.0230.00716.73
7.0.60.0110.01816.79
7.0.50.0190.01016.73
7.0.40.0190.01016.83
7.0.30.0290.00016.68
7.0.20.0280.00016.74
7.0.10.0310.00016.49
7.0.00.0270.00316.63
5.6.400.0260.00415.60
5.6.390.0250.00615.40
5.6.380.0170.01415.48
5.6.370.0170.00715.56
5.6.360.0200.00415.57
5.6.350.0170.00715.38
5.6.340.0120.01715.58
5.6.330.0160.01315.61
5.6.320.0220.00615.48
5.6.310.0270.00315.31
5.6.300.0300.00615.35
5.6.290.0240.00915.61
5.6.280.0160.01315.50
5.6.270.0260.00315.59
5.6.260.0230.01015.51
5.6.250.0180.00415.70
5.6.240.0230.00015.51
5.6.230.0220.00415.69
5.6.220.0250.00415.79
5.6.210.0220.00715.60
5.6.200.0290.00015.65
5.6.190.0220.00815.68
5.6.180.0310.00315.11
5.6.170.0240.01015.64
5.6.160.0300.00315.40
5.6.150.0240.00315.59
5.6.140.0200.01015.45
5.6.130.0200.00915.63
5.6.120.0230.00815.63
5.6.110.0200.00915.57
5.6.100.0230.00715.46
5.6.90.0240.00615.38
5.6.80.0200.00815.30
5.6.70.0110.01815.51
5.6.60.0250.00315.72
5.6.50.0200.00815.66
5.6.40.0260.00315.63
5.6.30.0200.00615.84
5.6.20.0230.00015.69
5.6.10.0190.00515.54
5.6.00.0130.01615.41
5.5.380.0170.01215.67
5.5.370.0210.00915.45
5.5.360.0190.01015.41
5.5.350.0200.00815.43
5.5.340.0190.00615.56
5.5.330.0230.00715.63
5.5.320.0270.00315.31
5.5.310.0300.00315.28
5.5.300.0170.01315.47
5.5.290.0120.00815.48
5.5.280.0130.00815.52
5.5.270.0150.00615.59
5.5.260.0250.00015.46
5.5.250.0230.00315.58
5.5.240.0130.01015.30
5.5.230.0190.00915.56
5.5.220.0190.01015.49
5.5.210.0250.00415.44
5.5.200.0180.01015.37
5.5.190.0250.00415.37
5.5.180.0240.00415.56
5.5.170.0170.00715.48
5.5.160.0160.00815.33
5.5.150.0220.00315.20
5.5.140.0190.00915.23
5.5.130.0360.00015.18
5.5.120.0210.01015.17
5.5.110.0150.01115.46
5.5.100.0180.00615.41
5.5.90.0200.00315.41
5.5.80.0260.00315.15
5.5.70.0260.00415.58
5.5.60.0220.00915.32
5.5.50.0240.00315.33
5.5.40.0190.00915.68
5.5.30.0180.00915.45
5.5.20.0200.00315.74
5.5.10.0210.00715.55
5.5.00.0240.00415.38
5.4.450.0150.00814.14
5.4.440.0190.00614.14
5.4.430.0180.00414.14
5.4.420.0120.00714.14
5.4.410.0200.00314.14
5.4.400.0170.00314.14
5.4.390.0080.00414.14
5.4.380.0100.00014.14
5.4.370.0050.00514.14
5.4.360.0100.00014.14
5.4.350.0060.00614.14
5.4.340.0100.00014.14
5.4.330.0100.00014.14
5.4.320.0030.00714.14
5.4.310.0030.00714.14
5.4.300.0000.01014.14
5.4.290.0050.00514.14
5.4.280.0230.00014.14
5.4.270.0170.00614.14
5.4.260.0250.00514.14
5.4.250.0150.00814.14
5.4.240.0170.00614.14
5.4.230.0190.00414.14
5.4.220.0200.00314.14
5.4.210.0180.00414.14
5.4.200.0180.00914.14
5.4.190.0140.01114.14
5.4.180.0220.00014.14
5.4.170.0190.00414.14
5.4.160.0190.00014.14
5.4.150.0190.00414.14
5.4.140.0160.00614.14
5.4.130.0190.00314.14
5.4.120.0240.00314.14
5.4.110.0230.00014.14
5.4.100.0190.00414.14
5.4.90.0140.00714.14
5.4.80.0130.00414.14
5.4.70.0160.00514.14
5.4.60.0150.00714.14
5.4.50.0110.01114.14
5.4.40.0190.00314.14
5.4.30.0160.00614.14
5.4.20.0180.00414.14
5.4.10.0160.00314.14
5.4.00.0180.00314.14
5.3.290.0150.00714.14
5.3.280.0190.00414.14
5.3.270.0190.00314.14
5.3.260.0150.00714.14
5.3.250.0150.00614.14
5.3.240.0160.00614.14
5.3.230.0140.01014.14
5.3.220.0220.00014.14
5.3.210.0190.00314.14
5.3.200.0140.00714.14
5.3.190.0110.01114.14
5.3.180.0170.00714.14
5.3.170.0160.00914.14
5.3.160.0160.00314.14
5.3.150.0060.00614.14
5.3.140.0080.00414.14
5.3.130.0060.00314.14
5.3.120.0070.00314.14
5.3.110.0060.00614.14
5.3.100.0140.00414.14
5.3.90.0170.00014.14
5.3.80.0110.00714.14
5.3.70.0060.00314.14
5.3.60.0180.00314.14
5.3.50.0220.00314.14
5.3.40.0200.00314.14
5.3.30.0190.00014.14
5.3.20.0150.00414.14
5.3.10.0170.00414.14
5.3.00.0070.01014.14
5.2.170.0120.00314.14
5.2.160.0090.00614.14
5.2.150.0130.00514.14
5.2.140.0100.00714.14
5.2.130.0130.00414.14
5.2.120.0130.00414.14
5.2.110.0140.00414.14
5.2.100.0120.00614.14
5.2.90.0150.00314.14
5.2.80.0110.00714.14
5.2.70.0110.00714.14
5.2.60.0220.00414.14
5.2.50.0110.00714.14
5.2.40.0150.00414.14
5.2.30.0130.00414.14
5.2.20.0130.00414.14
5.2.10.0190.00014.14
5.2.00.0150.00514.14
5.1.60.0080.00514.14
5.1.50.0070.00014.14
5.1.40.0150.00014.14
5.1.30.0070.00014.14
5.1.20.0120.00314.14
5.1.10.0040.00414.14
5.1.00.0000.00714.14
5.0.50.0000.00614.14
5.0.40.0100.00314.14
5.0.30.0070.00714.14
5.0.20.0140.00014.14
5.0.10.0130.00014.14
5.0.00.0100.00314.14
4.4.90.0070.00014.14
4.4.80.0050.00314.14
4.4.70.0000.00814.14
4.4.60.0050.00314.14
4.4.50.0050.00314.14
4.4.40.0000.00814.14
4.4.30.0080.00014.14
4.4.20.0080.00014.14
4.4.10.0040.00414.14
4.4.00.0090.00014.14
4.3.110.0040.00014.14
4.3.100.0000.00414.14
4.3.90.0030.00314.14
4.3.80.0030.00014.14
4.3.70.0080.00014.14
4.3.60.0040.00014.14
4.3.50.0030.00014.14
4.3.40.0030.00014.14
4.3.30.0060.00014.14
4.3.20.0050.00014.14
4.3.10.0000.00514.14
4.3.00.0060.00014.14

preferences:
34.34 ms | 403 KiB | 5 Q