3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding ('utf-8'); $text = "А роза упала на лапу азора"; $result = "палиндром"; $text = mb_strtolower($text); $text = str_replace (" ", "", $text); $a = mb_strlen ($text); $x = floor ($a/2); for ($i =0 ; $i <=$x; $i++) { $wordEnd = substr ($x, -1); $wordStart = substr ($x, 0); if ($wordEnd != $wordStart){ break; echo "Не палиндром"; } }

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)
8.4.120.0120.00824.00
8.4.110.0080.00522.51
8.4.100.0120.00817.78
8.4.90.0080.01322.15
8.4.80.0080.00517.93
8.4.70.0070.00317.85
8.4.60.0030.00518.70
8.4.50.0130.01019.59
8.4.40.0070.01419.45
8.4.30.0110.00017.52
8.4.20.0070.00317.38
8.4.10.0040.00717.59
8.3.250.0110.00718.82
8.3.240.0130.00618.36
8.3.230.0050.00416.54
8.3.220.0060.00219.20
8.3.210.0050.00216.41
8.3.200.0130.00616.55
8.3.190.0100.00816.66
8.3.180.0120.00816.46
8.3.170.0100.01016.41
8.3.160.0070.00016.73
8.3.150.0090.00916.92
8.3.140.0120.00916.70
8.3.130.0050.00318.29
8.3.120.0040.01120.67
8.3.110.0030.00620.94
8.3.100.0070.01020.12
8.3.90.0070.01418.13
8.3.80.0060.00318.55
8.3.70.0110.00418.30
8.3.60.0070.01018.43
8.3.50.0110.00721.28
8.3.40.0070.01018.71
8.3.30.0070.00718.80
8.3.20.0040.00420.46
8.3.10.0080.00021.60
8.3.00.0040.00422.43
8.2.290.0080.00920.33
8.2.280.0040.00418.34
8.2.270.0070.01016.60
8.2.260.0120.00319.00
8.2.250.0120.00316.66
8.2.240.0050.00318.95
8.2.230.0050.00322.58
8.2.220.0040.00424.06
8.2.210.0090.00626.77
8.2.200.0030.00618.29
8.2.190.0140.00016.58
8.2.180.0100.00716.50
8.2.170.0100.00722.96
8.2.160.0100.00319.32
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0030.00620.50
8.2.110.0070.00319.11
8.2.100.0040.00817.91
8.2.90.0030.00619.20
8.2.80.0050.00317.97
8.2.70.0060.00317.63
8.2.60.0080.00017.92
8.2.50.0000.00818.16
8.2.40.0030.00620.55
8.2.30.0070.00019.21
8.2.20.0050.00318.12
8.2.10.0000.00718.09
8.2.00.0000.00718.27
8.1.330.0140.00421.77
8.1.320.0120.00916.25
8.1.310.0140.00418.31
8.1.300.0070.00316.36
8.1.290.0000.00918.88
8.1.280.0140.00325.92
8.1.270.0060.00322.14
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0000.00824.05
8.1.230.0000.01118.99
8.1.220.0080.00017.78
8.1.210.0040.00418.77
8.1.200.0030.00617.48
8.1.190.0030.00517.35
8.1.180.0080.00018.10
8.1.170.0030.00518.84
8.1.160.0040.00418.95
8.1.150.0080.00020.16
8.1.140.0000.00719.76
8.1.130.0070.00018.95
8.1.120.0050.00317.52
8.1.110.0040.00417.51
8.1.100.0050.00317.49
8.1.90.0080.00017.64
8.1.80.0070.00017.50
8.1.70.0030.00317.65
8.1.60.0030.00617.72
8.1.50.0050.00317.66
8.1.40.0040.00417.64
8.1.30.0040.00417.63
8.1.20.0000.00817.84
8.1.10.0030.00617.52
8.1.00.0060.00317.45
8.0.300.0000.00720.02
8.0.290.0000.00716.88
8.0.280.0070.00018.50
8.0.270.0070.00317.29
8.0.260.0000.00619.04
8.0.250.0040.00416.99
8.0.240.0070.00317.12
8.0.230.0000.00717.08
8.0.220.0040.00416.97
8.0.210.0040.00416.97
8.0.200.0030.00317.04
8.0.190.0080.00017.07
8.0.180.0000.00717.04
8.0.170.0040.00416.97
8.0.160.0050.00217.08
8.0.150.0000.00716.96
8.0.140.0070.00016.84
8.0.130.0030.00313.38
8.0.120.0060.00316.91
8.0.110.0070.00016.88
8.0.100.0070.00016.93
8.0.90.0040.00416.86
8.0.80.0070.01016.86
8.0.70.0050.00216.77
8.0.60.0050.00217.00
8.0.50.0000.00716.98
8.0.30.0050.01317.26
8.0.20.0080.01317.40
8.0.10.0070.00017.00
8.0.00.0070.01316.75
7.4.330.0020.00215.55
7.4.320.0000.00716.69
7.4.300.0040.00416.63
7.4.290.0000.01116.68
7.4.280.0030.00516.72
7.4.270.0070.00016.71
7.4.260.0030.00316.66
7.4.250.0090.00016.72
7.4.240.0000.00716.71
7.4.230.0000.00716.58
7.4.220.0030.01416.82
7.4.210.0060.01016.52
7.4.200.0000.00716.60
7.4.160.0080.00816.65
7.4.150.0150.00317.40
7.4.140.0100.00917.86
7.4.130.0070.01116.64
7.4.120.0090.01216.66
7.4.110.0030.01816.51
7.4.100.0120.00616.59
7.4.90.0140.00616.82
7.4.80.0100.01019.39
7.4.70.0000.01716.65
7.4.60.0100.00716.66
7.4.50.0000.01116.62
7.4.40.0130.00316.45
7.4.30.0030.01416.79
7.4.00.0060.00915.18
7.3.330.0000.00613.23
7.3.320.0030.00313.29
7.3.310.0000.00716.47
7.3.300.0020.00516.38
7.3.290.0060.00916.41
7.3.280.0100.00916.50
7.3.270.0130.00317.40
7.3.260.0080.00916.56
7.3.240.0120.01216.35
7.3.230.0110.00516.56
7.3.210.0000.01716.58
7.3.200.0100.01016.32
7.3.190.0070.01116.48
7.3.180.0130.00316.50
7.3.170.0030.01316.40
7.3.160.0100.00716.34
7.3.10.0080.00316.42
7.3.00.0060.00616.71
7.2.330.0170.00316.58
7.2.320.0130.01016.66
7.2.310.0030.01916.88
7.2.300.0110.00716.68
7.2.290.0060.01016.70
7.2.130.0090.00616.93
7.2.120.0040.00816.82
7.2.110.0030.01016.69
7.2.100.0110.00417.13
7.2.90.0110.00616.75
7.2.80.0000.01016.88
7.2.70.0100.00317.00
7.2.60.0070.00716.79
7.2.50.0060.00916.93
7.2.40.0070.00716.89
7.2.30.0090.00616.74
7.2.20.0030.00716.88
7.2.10.0090.00616.75
7.2.00.0070.00316.65
7.1.250.0060.00915.84
7.1.200.0100.00315.80
7.1.70.0000.00817.16
7.1.60.0030.00717.45
7.1.50.0300.05040.71
7.1.40.0130.01734.42
7.1.30.0200.01334.49
7.1.20.0170.01034.57
7.1.10.0030.00716.57
7.1.00.0130.00716.61
7.0.200.0000.01716.55
7.0.190.0030.06322.38
7.0.180.0030.01316.34
7.0.170.0030.01016.21
7.0.160.0030.01316.13
7.0.150.0030.00716.11
7.0.140.0100.01016.28
7.0.130.0000.01316.37
7.0.120.0000.01316.45
7.0.110.0030.01016.18
7.0.100.0070.00716.30
7.0.90.0070.00716.25
7.0.80.0070.00716.38
7.0.70.0030.01316.21
7.0.60.0030.01015.82
7.0.50.0030.01316.13
7.0.40.0000.01316.42
7.0.30.0000.01316.63
7.0.20.0100.00716.61
7.0.10.0070.00716.43
7.0.00.0030.01016.38

preferences:
28.83 ms | 403 KiB | 5 Q