3v4l.org

run code in 300+ PHP versions simultaneously
<?php function reverse($str) { $ret = ''; for ($i = mb_strlen($str, 'utf-8')-1; $i >= 0; $i--) { $ret .= mb_substr($str, $i, 1, 'utf-8'); } return $ret; } function oddList($x) { return implode(', ', range(1, $x, 2)); } echo reverse('ābc');

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)
8.3.60.0130.00716.63
8.3.50.0050.01522.05
8.3.40.0060.01218.84
8.3.30.0130.00319.09
8.3.20.0030.00620.26
8.3.10.0030.01523.67
8.3.00.0050.00318.89
8.2.180.0130.00318.29
8.2.170.0120.00322.96
8.2.160.0040.01120.35
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0030.00620.68
8.2.110.0060.00322.25
8.2.100.0090.00319.11
8.2.90.0000.00817.61
8.2.80.0080.00017.97
8.2.70.0070.00317.91
8.2.60.0000.00917.93
8.2.50.0050.00318.10
8.2.40.0000.00822.09
8.2.30.0080.00018.31
8.2.20.0000.00817.79
8.2.10.0000.00718.08
8.2.00.0050.00317.55
8.1.280.0120.00625.92
8.1.270.0030.00623.91
8.1.260.0050.00226.35
8.1.250.0080.00028.09
8.1.240.0090.00022.14
8.1.230.0080.00419.07
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0030.00617.23
8.1.190.0030.00619.02
8.1.180.0030.00518.10
8.1.170.0060.00318.64
8.1.160.0000.00821.95
8.1.150.0050.00218.49
8.1.140.0040.00417.30
8.1.130.0040.00417.74
8.1.120.0050.00217.40
8.1.110.0040.00417.37
8.1.100.0000.00717.48
8.1.90.0000.00817.34
8.1.80.0040.00417.37
8.1.70.0030.00317.34
8.1.60.0060.00317.53
8.1.50.0040.00417.62
8.1.40.0030.00617.52
8.1.30.0000.00817.70
8.1.20.0000.00717.72
8.1.10.0000.00717.50
8.1.00.0040.00417.39
8.0.300.0080.00019.77
8.0.290.0060.00316.75
8.0.280.0040.00418.50
8.0.270.0000.00717.38
8.0.260.0070.00017.32
8.0.250.0030.00317.03
8.0.240.0030.00316.99
8.0.230.0070.00016.96
8.0.220.0070.00016.78
8.0.210.0030.00316.89
8.0.200.0000.00716.86
8.0.190.0050.00316.93
8.0.180.0000.00716.92
8.0.170.0050.00316.77
8.0.160.0030.00316.78
8.0.150.0000.00716.84
8.0.140.0020.00516.77
8.0.130.0050.00013.25
8.0.120.0000.00816.91
8.0.110.0040.00416.85
8.0.100.0030.00616.86
8.0.90.0030.00516.89
8.0.80.0030.01216.87
8.0.70.0060.00316.88
8.0.60.0080.00016.92
8.0.50.0040.00416.92
8.0.30.0080.01417.17
8.0.20.0110.00917.40
8.0.10.0000.00716.98
8.0.00.0100.00816.88
7.4.330.0050.00015.07
7.4.320.0070.00016.53
7.4.300.0000.00716.64
7.4.290.0030.00316.44
7.4.280.0040.00416.51
7.4.270.0070.00316.53
7.4.260.0000.00716.60
7.4.250.0000.00716.55
7.4.240.0050.00216.59
7.4.230.0030.00316.49
7.4.220.0100.01716.47
7.4.210.0040.01116.57
7.4.200.0000.00716.62
7.4.190.0000.00716.59
7.4.160.0060.01116.57
7.4.150.0130.00317.40
7.4.140.0110.00817.86
7.4.130.0110.00616.50
7.4.120.0120.00816.44
7.4.110.0140.00316.56
7.4.100.0040.01716.56
7.4.90.0040.01316.58
7.4.80.0150.00519.39
7.4.70.0060.01016.56
7.4.60.0150.00616.66
7.4.50.0040.00416.43
7.4.40.0100.00716.47
7.4.30.0030.01216.56
7.4.00.0080.00714.99
7.3.330.0000.00613.27
7.3.320.0020.00213.30
7.3.310.0000.00716.40
7.3.300.0000.00816.32
7.3.290.0120.00816.32
7.3.280.0070.01016.26
7.3.270.0120.00917.40
7.3.260.0090.00916.36
7.3.250.0100.00916.54
7.3.240.0160.00816.45
7.3.230.0100.00716.39
7.3.210.0130.00716.64
7.3.200.0030.01319.39
7.3.190.0190.00316.56
7.3.180.0130.00316.45
7.3.170.0140.00316.40
7.3.160.0000.01416.28
7.3.120.0050.01214.89
7.3.110.0120.00714.72
7.3.100.0060.00914.92
7.3.90.0030.01114.93
7.3.80.0060.00914.77
7.3.70.0010.00914.67
7.3.60.0030.01014.67
7.3.50.0090.00414.76
7.3.40.0030.00814.85
7.3.30.0090.00714.88
7.3.20.0050.00816.75
7.3.10.0060.00916.60
7.3.00.0020.01116.65
7.2.330.0070.01016.56
7.2.320.0080.00816.77
7.2.310.0060.01616.79
7.2.300.0070.01016.60
7.2.290.0130.00616.70
7.2.250.0070.00715.05
7.2.240.0120.00715.13
7.2.230.0070.00715.19
7.2.220.0050.00815.14
7.2.210.0080.00615.23
7.2.200.0090.00714.97
7.2.190.0060.00814.92
7.2.180.0070.00915.00
7.2.170.0050.00815.10
7.2.130.0080.00416.67
7.2.120.0000.01417.14
7.2.110.0120.00417.02
7.2.100.0060.00616.78
7.2.90.0070.00716.67
7.2.80.0090.00317.15
7.2.70.0080.00816.77
7.2.60.0020.01116.91
7.2.50.0130.00316.86
7.2.40.0030.00916.95
7.2.30.0030.01317.02
7.2.20.0060.00617.05
7.2.10.0040.00816.87
7.2.00.0050.00518.17
7.1.330.0030.01115.82
7.1.320.0050.00515.99
7.1.310.0090.00315.85
7.1.300.0070.00215.85
7.1.290.0110.00115.72
7.1.280.0070.00816.00
7.1.270.0070.00715.74
7.1.260.0050.00815.69
7.1.250.0060.00915.76
7.1.200.0030.01015.69
7.1.100.0060.00618.30
7.1.70.0030.00616.93
7.1.60.0100.01319.46
7.1.50.0160.00916.89
7.1.00.0170.06322.43
7.0.200.0070.00016.69
7.0.140.0000.07321.96
7.0.60.0100.07719.92
7.0.50.0100.08017.89
7.0.40.0130.05320.40
7.0.30.0270.03320.21
7.0.20.0270.04020.31
7.0.10.0130.04720.28
7.0.00.0070.08320.09
5.6.280.0100.06720.79
5.6.210.0070.07720.70
5.6.200.0000.04318.23
5.6.190.0070.09020.41
5.6.180.0300.08020.48
5.6.170.0200.05720.55
5.6.160.0300.03320.50
5.6.150.0100.07718.19
5.6.140.0100.06318.15
5.6.130.0130.07718.21
5.6.120.0030.04021.04
5.6.110.0070.08320.90
5.6.100.0100.08021.09
5.6.90.0170.07320.97
5.6.80.0030.08020.40
5.5.350.0100.03320.50
5.5.340.0070.06317.95
5.5.330.0030.04320.26
5.5.320.0030.08320.18
5.5.310.0230.04020.20
5.5.300.0030.04017.95
5.5.290.0000.05317.98
5.5.280.0070.06720.80
5.5.270.0030.07720.88
5.5.260.0230.06720.89
5.5.250.0100.07720.69
5.5.240.3770.03020.13
5.4.450.0100.06319.18
5.4.440.0030.06319.20
5.4.430.0030.04019.45
5.4.420.0070.04319.54
5.4.410.0030.07319.42
5.4.400.0100.07018.98
5.4.390.0070.07319.07
5.4.380.0030.07019.08
5.4.370.0030.07019.16
5.4.360.0000.06318.88
5.4.350.0030.04719.11
5.4.340.0070.06319.07
5.4.320.0070.07319.11
5.4.310.0130.07019.26
5.4.300.0070.05318.87
5.4.290.0030.07318.98
5.4.280.0000.07719.16
5.4.270.0070.07319.13
5.4.260.0000.05319.08
5.4.250.0070.07019.05
5.4.240.0070.04019.07
5.4.230.0000.08318.84
5.4.220.0100.06319.30
5.4.210.0070.06018.84
5.4.200.0070.04719.23
5.4.190.0030.06718.84
5.4.180.0000.07719.19
5.4.170.0070.07318.86
5.4.160.0030.07319.04
5.4.150.0030.07719.11
5.4.140.0030.06716.58
5.4.130.0030.07316.55
5.4.120.0100.06716.49
5.4.110.0030.04316.31
5.4.100.0070.07016.61
5.4.90.0000.05716.45
5.4.80.0100.06316.29
5.4.70.0030.07016.62
5.4.60.0030.07316.54
5.4.50.0030.05016.34
5.4.40.0000.07716.54
5.4.30.0100.06316.38
5.4.20.0000.07316.42
5.4.10.0030.07316.16
5.4.00.0000.07315.80
5.3.290.0070.03714.74
5.3.280.0000.08014.50
5.3.270.0070.07714.52
5.3.260.0070.07714.62
5.3.250.0030.06014.61
5.3.240.0000.06314.68
5.3.230.0070.07014.60
5.3.220.0070.06314.48
5.3.210.0000.07714.49
5.3.200.0000.06314.64
5.3.190.0030.08014.49
5.3.180.0100.07014.57
5.3.170.0030.07014.68
5.3.160.0030.07314.48
5.3.150.0030.07314.72
5.3.140.0030.04714.66
5.3.130.0070.07314.63
5.3.120.0100.07014.46
5.3.110.0030.06714.57
5.3.100.0100.07014.13
5.3.90.0100.06014.03
5.3.80.0100.07014.03
5.3.70.0000.08013.95
5.3.60.0030.07314.03
5.3.50.0000.06713.86
5.3.40.0030.07713.88
5.3.30.0070.06713.93
5.3.20.0000.06313.87
5.3.10.0070.06713.66
5.3.00.0070.06713.65
5.2.170.0170.03312.82
5.2.160.0030.06312.82
5.2.150.0030.06312.82
5.2.140.0030.06012.82
5.2.130.0070.06012.82
5.2.120.0070.06012.82
5.2.110.0070.05012.82
5.2.100.0000.07012.82
5.2.90.0070.06012.82
5.2.80.0030.04712.82
5.2.70.0030.05712.82
5.2.60.0070.05312.82
5.2.50.0100.04012.82
5.2.40.0070.05712.82
5.2.30.0000.06712.82
5.2.20.0030.05012.82
5.2.10.0030.06012.82
5.2.00.0030.05712.82
5.1.60.0100.03012.82
5.1.50.0030.05012.82
5.1.40.0070.05012.82
5.1.30.0000.06312.82
5.1.20.0070.05012.82
5.1.10.0030.05712.82
5.1.00.0100.04712.82
5.0.50.0030.03712.82
5.0.40.0070.04012.82
5.0.30.0000.07012.82
5.0.20.0000.04012.82
5.0.10.0070.04012.82
5.0.00.0000.07012.82
4.4.90.0000.03712.82
4.4.80.0000.03312.82
4.4.70.0030.03712.82
4.4.60.0030.01712.82
4.4.50.0000.02012.82
4.4.40.0030.05312.82
4.4.30.0000.02712.82
4.4.20.0030.03012.82
4.4.10.0030.02312.82
4.4.00.0000.03012.82
4.3.110.0030.03312.82
4.3.100.0030.02012.82
4.3.90.0000.02712.82
4.3.80.0070.04312.82
4.3.70.0030.03012.82
4.3.60.0000.03312.82
4.3.50.0000.03712.82
4.3.40.0030.04312.82
4.3.30.0000.03712.82
4.3.20.0030.02012.82
4.3.10.0100.02712.82
4.3.00.0100.01712.82

preferences:
43.85 ms | 401 KiB | 5 Q