3v4l.org

run code in 300+ PHP versions simultaneously
<?php $some_string = 'ффффффффффффффффффффффффффффффф'; echo mb_substr($some_string, -1); //echo strlen(json_encode(['message' => $some_string])).PHP_EOL; //$encode = base64_encode($some_string); //var_dump($encode); //var_dump([mb_strimwidth(json_encode(array('message' => stripslashes($some_string))),0,200,'...'),strlen(mb_strimwidth(json_encode(array('message' => $some_string)),0,200,'...'))]); //var_dump(json_encode(array('message' => str_replace(array('\u041a','\u0443'), array('',''), $some_string)))); //} //var_dump(mb_detect_encoding($some_string)); //var_dump(strlen(json_encode(array('message' => $some_string))));

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)
8.3.60.0100.00318.43
8.3.50.0060.01021.08
8.3.40.0150.00618.71
8.3.30.0100.00320.39
8.3.20.0050.00220.29
8.3.10.0080.00022.08
8.3.00.0050.00222.51
8.2.180.0110.00416.63
8.2.170.0120.00322.96
8.2.160.0050.00920.48
8.2.150.0040.00424.18
8.2.140.0040.01124.66
8.2.130.0070.01126.16
8.2.120.0080.00019.54
8.2.110.0060.00322.14
8.2.100.0080.00419.21
8.2.90.0040.00419.09
8.2.80.0030.00519.32
8.2.70.0080.00017.50
8.2.60.0040.00418.05
8.2.50.0040.00418.07
8.2.40.0000.00818.34
8.2.30.0100.00018.09
8.2.20.0040.00417.51
8.2.10.0040.00417.53
8.2.00.0030.00617.63
8.1.280.0070.00725.92
8.1.270.0000.00824.66
8.1.260.0000.00726.35
8.1.250.0070.00028.09
8.1.240.0030.00623.83
8.1.230.0090.00319.19
8.1.220.0000.00817.78
8.1.210.0000.00818.77
8.1.200.0000.00917.13
8.1.190.0000.00917.53
8.1.180.0000.00820.06
8.1.170.0000.00818.46
8.1.160.0050.00322.14
8.1.150.0070.00018.49
8.1.140.0040.00417.26
8.1.130.0020.00417.78
8.1.120.0060.00317.33
8.1.110.0080.00017.43
8.1.100.0040.00417.42
8.1.90.0000.00717.39
8.1.80.0070.00017.39
8.1.70.0030.00317.36
8.1.60.0030.00617.59
8.1.50.0030.00517.45
8.1.40.0040.00417.53
8.1.30.0040.00417.68
8.1.20.0080.00017.53
8.1.10.0050.00317.49
8.1.00.0060.00617.56
8.0.300.0000.00718.77
8.0.290.0000.00717.27
8.0.280.0000.00718.50
8.0.270.0040.00417.20
8.0.260.0070.00016.92
8.0.250.0030.00517.08
8.0.240.0070.00017.00
8.0.230.0000.00716.99
8.0.220.0030.00316.91
8.0.210.0020.00516.86
8.0.200.0000.00616.99
8.0.190.0030.00516.91
8.0.180.0060.00516.95
8.0.170.0000.00716.84
8.0.160.0030.00316.87
8.0.150.0040.00416.72
8.0.140.0040.00416.82
8.0.130.0060.00013.36
8.0.120.0040.00416.88
8.0.110.0000.00716.85
8.0.100.0040.00416.71
8.0.90.0050.00216.88
8.0.80.0080.00816.98
8.0.70.0030.00616.70
8.0.60.0040.00416.92
8.0.50.0050.00216.80
8.0.30.0110.00817.25
8.0.20.0070.01417.40
8.0.10.0000.00816.83
8.0.00.0060.01216.59
7.4.330.0050.00015.00
7.4.320.0070.00016.55
7.4.300.0000.00816.52
7.4.290.0000.00616.47
7.4.280.0040.00416.43
7.4.270.0070.00016.53
7.4.260.0030.00716.40
7.4.250.0040.00416.43
7.4.240.0040.00316.59
7.4.230.0040.00416.33
7.4.220.0090.00916.44
7.4.210.0130.00716.58
7.4.200.0030.00316.33
7.4.190.0030.00316.49
7.4.160.0090.00616.50
7.4.150.0110.00717.40
7.4.140.0150.00317.86
7.4.130.0030.01516.45
7.4.120.0090.01016.34
7.4.110.0080.01216.30
7.4.100.0150.00816.45
7.4.90.0140.00316.42
7.4.80.0090.00819.39
7.4.70.0040.01216.54
7.4.60.0120.00616.49
7.4.50.0030.00516.35
7.4.40.0070.01122.77
7.4.30.0100.00716.63
7.4.00.0080.00814.89
7.3.330.0060.00012.89
7.3.320.0000.00512.97
7.3.310.0030.00316.17
7.3.300.0030.00316.07
7.3.290.0080.00816.18
7.3.280.0110.00616.11
7.3.270.0090.00917.40
7.3.260.0130.00616.34
7.3.250.0110.00716.37
7.3.240.0090.01316.21
7.3.230.0130.00316.43
7.3.210.0060.01016.30
7.3.200.0090.01219.39
7.3.190.0170.01316.39
7.3.180.0040.01116.19
7.3.170.0100.00716.50
7.3.160.0060.00916.17
7.3.120.0000.01714.90
7.3.10.0130.00716.35
7.3.00.0060.01316.20
7.2.330.0070.01016.41
7.2.320.0150.00316.25
7.2.310.0090.00916.62
7.2.300.0110.00616.54
7.2.290.0160.00316.63
7.2.130.0120.00616.84
7.2.120.0080.00816.74
7.2.110.0090.01316.67
7.2.100.0120.00916.40
7.2.90.0120.00716.61
7.2.80.0120.01116.65
7.2.70.0100.00816.53
7.2.60.0090.00916.54
7.2.50.0120.00616.60
7.2.40.0070.00916.59
7.2.30.0050.01016.45
7.2.20.0080.01016.53
7.2.10.0120.00816.41
7.2.00.0110.00617.69
7.1.250.0150.00515.63
7.1.200.0110.00015.73
7.1.100.0000.01117.68
7.1.70.0060.00317.26
7.1.60.0100.01319.21
7.1.50.0100.01416.88
7.1.00.0030.05322.35
7.0.200.0160.00714.95
7.0.140.0070.06722.07
7.0.60.0170.07319.91
7.0.50.0070.08017.81
7.0.40.0070.08720.05
7.0.30.0230.05320.17
7.0.20.0300.04020.20
7.0.10.0370.04720.16
7.0.00.0000.05720.03
5.6.280.0100.06721.11
5.6.210.0070.08020.62
5.6.200.0030.05318.21
5.6.190.0030.04320.47
5.6.180.0200.05320.49
5.6.170.0230.05020.41
5.6.160.0070.05720.42
5.6.150.0100.07718.14
5.6.140.0030.08318.16
5.6.130.0030.08318.17
5.6.120.0130.07321.11
5.6.110.0170.06321.04
5.6.100.0070.08321.13
5.6.90.0100.03720.95
5.6.80.0100.03320.27
5.6.70.0270.07720.42
5.5.350.0100.08020.31
5.5.340.0030.07017.96
5.5.330.0070.04020.56
5.5.320.0130.08020.13
5.5.310.0130.04020.23
5.5.300.0070.05318.01
5.5.290.0070.04017.87
5.5.280.0130.07720.89
5.5.270.0130.05320.88
5.5.260.0100.07020.92
5.5.250.0230.07020.69
5.5.240.0030.06720.01
5.4.450.0700.07319.47
5.4.440.0730.05719.59
5.4.430.0570.05319.62
5.4.420.0700.07719.47
5.4.410.1000.04019.35
5.4.400.0270.05718.79
5.4.390.0530.06018.74
5.4.380.0200.05718.56
5.4.370.0100.05718.70
5.4.360.0070.05718.44
5.4.350.0090.04011.97
5.4.340.0090.05411.97
5.4.320.0050.04112.46
5.4.310.0040.04112.45
5.4.300.0100.03312.45
5.4.290.0080.03512.45
5.4.280.0080.03312.35
5.4.270.0120.03412.35
5.4.260.0080.04512.34
5.4.250.0070.05318.72
5.4.240.0100.05018.86
5.4.230.0070.05018.67
5.4.220.0130.05018.98
5.4.210.0070.05018.80
5.4.200.0070.05718.89
5.4.190.0030.05718.77
5.4.180.0070.05018.77
5.4.170.0030.05718.90
5.4.160.0100.04718.71
5.4.150.0000.06018.98
5.4.140.0030.05016.53
5.4.130.0000.05316.29
5.4.120.0070.04716.31
5.4.110.0070.04716.26
5.4.100.0100.04716.22
5.4.90.0070.04716.20
5.4.80.0030.05316.33
5.4.70.0100.04716.31
5.4.60.0130.05716.45
5.4.50.0100.04316.14
5.4.40.0070.05016.23
5.4.30.0000.05316.14
5.4.20.0030.05316.46
5.4.10.0070.05016.36
5.4.00.0170.03715.88
5.3.290.0110.05012.80
5.3.280.0070.05014.50
5.3.270.0000.06014.48
5.3.260.0070.07314.49
5.3.250.0170.04014.60
5.3.240.0200.05314.58
5.3.230.0070.04714.60
5.3.220.0130.04014.57
5.3.210.0100.05014.61
5.3.200.0070.04714.42
5.3.190.0070.05014.28
5.3.180.0100.04714.41
5.3.170.0000.05314.41
5.3.160.0100.05014.57
5.3.150.0070.05014.25
5.3.140.0000.05714.60
5.3.130.0130.06314.24
5.3.120.0130.04714.54
5.3.110.0070.05014.24
5.3.100.0130.04713.73
5.3.90.0100.05313.88
5.3.80.0130.05314.03
5.3.70.0070.04714.16
5.3.60.0000.05714.01
5.3.50.0070.04713.64
5.3.40.0100.04313.66
5.3.30.0070.04713.84
5.3.20.0100.04713.68
5.3.10.0100.04313.69
5.3.00.0130.04313.68
5.2.170.0030.04011.15
5.2.160.0130.03310.90
5.2.150.0070.04311.14
5.2.140.0100.03711.14
5.2.130.0070.06011.10
5.2.120.0030.04011.11
5.2.110.0100.04011.11
5.2.100.0030.03711.25
5.2.90.0100.03711.02
5.2.80.0000.04710.97
5.2.70.0030.04311.00
5.2.60.0100.03710.97
5.2.50.0000.04310.94
5.2.40.0030.04311.00
5.2.30.0030.04311.06
5.2.20.0070.03710.96
5.2.10.0130.03010.89
5.2.00.0130.03310.72
5.1.60.0000.0379.90
5.1.50.0070.03310.02
5.1.40.0100.03010.02
5.1.30.0070.03310.42
5.1.20.0100.03710.43
5.1.10.0030.0379.98
5.1.00.0100.03010.30
5.0.50.0070.0278.30
5.0.40.0070.0208.64
5.0.30.0070.0378.36
5.0.20.0030.0278.34
5.0.10.0000.0308.13
5.0.00.0000.0608.25
4.4.90.0030.0276.14
4.4.80.0000.0376.14
4.4.70.0070.0176.14
4.4.60.0100.0136.14
4.4.50.0070.0176.38
4.4.40.0030.0336.38
4.4.30.0030.0236.38
4.4.20.0000.0236.38
4.4.10.0070.0176.38
4.4.00.0000.0336.38
4.3.110.0000.0236.38
4.3.100.0070.0176.38
4.3.90.0000.0206.38
4.3.80.0130.0376.38
4.3.70.0030.0236.38
4.3.60.0000.0236.38
4.3.50.0000.0336.38
4.3.40.0070.0276.38
4.3.30.0030.0206.38
4.3.20.0000.0236.37
4.3.10.0070.0206.37
4.3.00.0100.0236.40

preferences:
50.13 ms | 401 KiB | 5 Q