3v4l.org

run code in 300+ PHP versions simultaneously
<?php function longest_palendrome($string) { $words = explode(' ', $string); $longest = ''; foreach ($words as $word) { $letters = $reversed = str_split($word); array_reverse($reversed); if ($letters === implode('', $reversed) && strlen($word) > strlen($longest)) { $longest = $word; } } return $word; } echo longest_palendrome("i ama racecar");

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)
8.3.60.0120.00316.36
8.3.50.0100.00718.30
8.3.40.0060.01218.96
8.3.30.0070.00718.67
8.3.20.0050.00318.73
8.3.10.0080.00018.48
8.3.00.0000.00819.26
8.2.180.0150.00018.02
8.2.170.0120.00322.96
8.2.160.0120.00318.79
8.2.150.0080.00024.18
8.2.140.0120.00924.66
8.2.130.0000.00826.16
8.2.120.0090.00319.48
8.2.110.0070.00320.97
8.2.100.0080.00317.78
8.2.90.0050.00319.27
8.2.80.0040.00418.05
8.2.70.0040.00417.50
8.2.60.0060.00317.80
8.2.50.0000.00818.10
8.2.40.0040.00420.48
8.2.30.0000.00719.12
8.2.20.0000.01017.64
8.2.10.0050.00217.80
8.2.00.0000.00717.64
8.1.280.0100.00725.92
8.1.270.0080.00023.99
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0060.00323.84
8.1.230.0100.00019.16
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00717.22
8.1.190.0050.00317.23
8.1.180.0090.00018.10
8.1.170.0030.00518.63
8.1.160.0000.00718.88
8.1.150.0040.00418.78
8.1.140.0000.00717.50
8.1.130.0040.00417.44
8.1.120.0000.00717.47
8.1.110.0000.00817.42
8.1.100.0050.00217.48
8.1.90.0080.00017.51
8.1.80.0040.00317.48
8.1.70.0070.00017.34
8.1.60.0040.00417.58
8.1.50.0080.00017.49
8.1.40.0060.00317.47
8.1.30.0000.00917.69
8.1.20.0090.00317.54
8.1.10.0080.00017.42
8.1.00.0040.00417.31
8.0.300.0050.00218.77
8.0.290.0040.00416.75
8.0.280.0000.00818.34
8.0.270.0030.00317.14
8.0.260.0000.00616.88
8.0.250.0000.00816.91
8.0.240.0000.00716.96
8.0.230.0030.00517.00
8.0.220.0030.00316.95
8.0.210.0000.00816.88
8.0.200.0000.00616.88
8.0.190.0030.00316.85
8.0.180.0000.00716.79
8.0.170.0060.00316.88
8.0.160.0000.00716.79
8.0.150.0040.00416.91
8.0.140.0040.00416.84
8.0.130.0050.00013.33
8.0.120.0030.00616.82
8.0.110.0070.00016.98
8.0.100.0070.00016.68
8.0.90.0070.00016.93
8.0.80.0040.01716.85
8.0.70.0040.00416.78
8.0.60.0000.00916.90
8.0.50.0050.00516.99
8.0.30.0030.01316.80
8.0.20.0100.01017.02
8.0.10.0000.00816.94
8.0.00.0110.00616.64
7.4.330.0050.00012.88
7.4.320.0000.00716.62
7.4.300.0070.00016.56
7.4.290.0040.00716.49
7.4.280.0040.00416.46
7.4.270.0000.00816.48
7.4.260.0000.00613.28
7.4.250.0000.00816.58
7.4.240.0030.00316.40
7.4.230.0020.00516.38
7.4.220.0040.01516.55
7.4.210.0060.01016.54
7.4.200.0040.00416.70
7.4.190.0030.00516.70
7.4.160.0030.01316.53
7.4.150.0070.01016.63
7.4.140.0150.00617.86
7.4.130.0130.01016.70
7.4.120.0070.01016.54
7.4.110.0040.01916.47
7.4.100.0140.00716.58
7.4.90.0070.01116.52
7.4.80.0100.00619.39
7.4.70.0090.00916.44
7.4.60.0070.01416.46
7.4.50.0060.00316.42
7.4.40.0150.00416.64
7.4.30.0110.00616.43
7.4.00.0030.01015.05
7.3.330.0060.00013.18
7.3.320.0030.00313.30
7.3.310.0000.00716.27
7.3.300.0030.00316.22
7.3.290.0070.01116.36
7.3.280.0140.00616.34
7.3.270.0120.00616.51
7.3.260.0140.00516.58
7.3.240.0130.00916.27
7.3.230.0110.00616.40
7.3.210.0030.01816.45
7.3.200.0090.01216.35
7.3.190.0070.00916.32
7.3.180.0030.01316.42
7.3.170.0160.00616.49
7.3.160.0070.01316.35
7.3.120.0040.00814.75
7.2.330.0000.01616.53
7.2.320.0150.00516.68
7.2.310.0030.01616.73
7.2.300.0070.01016.52
7.2.290.0090.00916.76
7.2.00.0060.00619.34
7.1.200.0030.01015.72
7.1.100.0060.00617.93
7.1.70.0000.00817.01
7.1.60.0060.01619.25
7.1.50.0100.01016.78
7.1.00.0030.03322.30
7.0.200.0030.00616.78
7.0.140.0000.07722.18
7.0.60.0000.08721.73
7.0.50.0070.08317.88
7.0.40.0030.05020.13
7.0.30.0230.07020.30
7.0.20.0270.07020.12
7.0.10.0070.09320.19
7.0.00.0070.08020.24
5.6.280.0030.07021.12
5.6.210.0130.07720.78
5.6.200.0070.08018.25
5.6.190.0070.05720.67
5.6.180.0330.07720.66
5.6.170.0270.07320.44
5.6.160.0100.05320.47
5.6.150.0200.06718.23
5.6.140.0030.06718.23
5.6.130.0000.05718.14
5.6.120.0100.08020.87
5.6.110.0000.04321.07
5.6.100.0000.04320.98
5.6.90.0200.06021.00
5.6.80.0100.08020.45
5.5.350.4230.04720.36
5.5.340.0100.07317.94
5.5.330.0030.08320.27
5.5.320.0630.06720.29
5.5.310.0330.05720.37
5.5.300.0100.07717.97
5.5.290.0030.04017.98
5.5.280.0100.04020.88
5.5.270.0070.05720.79
5.5.260.0100.06720.87
5.5.250.0070.08320.60
5.5.240.0070.07720.13
5.4.450.3870.04019.35
5.4.440.3730.04319.46
5.4.430.3800.04019.32
5.4.420.3770.03019.45
5.4.410.2770.03719.40
5.4.400.2000.03719.23
5.4.390.3000.03319.24
5.4.380.3330.04019.13
5.4.370.3930.03718.98
5.4.360.3800.03318.99
5.4.350.3670.04319.13
5.4.340.3870.03718.98
5.4.320.3930.03719.20
5.4.310.3330.04019.13
5.4.300.3870.04018.99
5.4.290.3900.03719.22
5.4.280.3630.04018.93
5.4.270.3430.03719.17
5.4.260.4230.04319.04
5.4.250.4870.04019.12
5.4.240.3530.04019.04
5.4.230.3800.04019.05
5.4.220.3530.04318.98
5.4.210.3930.03019.17
5.4.200.4230.04718.98
5.4.190.3870.03719.12
5.4.180.3730.04019.21
5.4.170.3570.03718.96
5.4.160.3800.03719.09
5.4.150.3830.03719.11
5.4.140.3570.03716.27
5.4.130.3300.03316.35
5.4.120.3570.03716.38
5.4.110.3870.03716.56
5.4.100.3600.03016.27
5.4.90.3430.03716.52
5.4.80.0100.03316.51
5.4.70.3900.03316.52
5.4.60.3300.02716.61
5.4.50.3570.03016.25
5.4.40.4030.03716.45
5.4.30.3600.03016.57
5.4.20.3630.03316.45
5.4.10.3770.03016.50
5.4.00.3700.04015.98
5.3.290.3170.04014.72
5.3.280.3770.03314.64
5.3.270.3830.03014.60
5.3.260.3800.03314.60
5.3.250.3670.03014.61
5.3.240.3600.04014.63
5.3.230.3700.04314.60
5.3.220.3930.03314.62
5.3.210.3530.03714.57
5.3.200.3570.04014.59
5.3.190.0030.07014.55
5.3.180.0070.04014.57
5.3.170.1870.03714.71
5.3.160.4130.04714.59
5.3.150.3500.04014.57
5.3.140.3600.03014.57
5.3.130.3870.03714.54
5.3.120.3800.04014.55
5.3.110.3900.03714.61
5.3.100.3730.04014.18
5.3.90.3870.03314.05
5.3.80.3630.03713.96
5.3.70.3570.03314.04
5.3.60.4170.03014.05
5.3.50.1970.03313.84
5.3.40.0000.04713.95
5.3.30.4170.04013.79
5.3.20.3670.03313.71
5.3.10.3730.04313.59
5.3.00.3930.03013.61
5.2.170.0070.05711.04
5.2.160.0000.05011.04
5.2.150.2100.02711.14
5.2.140.3230.02711.13
5.2.130.3170.03311.14
5.2.120.3400.03311.12
5.2.110.3030.02711.04
5.2.100.2970.03311.11
5.2.90.3000.02311.17
5.2.80.3300.03711.17
5.2.70.3330.03011.25
5.2.60.3200.03311.10
5.2.50.3270.03010.91
5.2.40.2670.02710.94
5.2.30.2670.02711.02
5.2.20.2700.02711.00
5.2.10.3130.02310.89
5.2.00.3100.03010.71
5.1.60.2970.0239.99
5.1.50.1430.02010.01
5.1.40.1800.0279.99
5.1.30.1900.02710.41
5.1.20.1230.03310.31
5.1.10.1670.02710.09
5.1.00.2500.02710.09
5.0.50.1230.0238.59
5.0.40.1130.0208.41
5.0.30.0970.0278.17
5.0.20.0470.0208.20
5.0.10.1200.0208.17
5.0.00.0900.0308.21
4.4.90.1070.0176.02
4.4.80.1530.0176.02
4.4.70.1500.0176.02
4.4.60.1130.0206.02
4.4.50.1830.0176.02
4.4.40.1330.0336.02
4.4.30.0300.0136.02
4.4.20.0570.0176.02
4.4.10.0900.0336.02
4.4.00.1270.0336.02
4.3.110.0970.0136.02
4.3.100.1200.0176.02
4.3.90.0870.0176.02
4.3.80.0670.0276.02
4.3.70.0570.0136.02
4.3.60.0730.0106.02
4.3.50.0900.0136.02
4.3.40.1200.0236.02
4.3.30.0230.0206.02
4.3.20.0300.0136.02
4.3.10.0370.0136.02
4.3.00.0600.0136.02

preferences:
50.23 ms | 401 KiB | 5 Q