3v4l.org

run code in 300+ PHP versions simultaneously
<?php $utf8string = 'ASCIIユーティーエッフček等々'; $var = 'Ček'; $pos = strpos($utf8string, $var); if ($pos!==false) { echo substr($utf8string, 0, $pos); }

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)
8.3.40.0100.01018.52
8.3.30.0100.00318.87
8.3.20.0040.00420.12
8.3.10.0030.00520.41
8.3.00.0050.00317.38
8.2.170.0110.00422.96
8.2.160.0030.01020.35
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0000.00722.23
8.2.110.0060.00320.53
8.2.100.0070.00417.91
8.2.90.0000.00819.05
8.2.80.0040.00417.97
8.2.70.0070.00717.25
8.2.60.0060.00317.80
8.2.50.0070.00318.07
8.2.40.0000.00818.08
8.2.30.0050.00319.24
8.2.20.0000.00717.67
8.2.10.0040.00418.12
8.2.00.0000.00817.63
8.1.270.0080.00022.27
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0030.00623.79
8.1.230.0080.00319.01
8.1.220.0030.00517.74
8.1.210.0040.00418.77
8.1.200.0000.00917.23
8.1.190.0000.00817.23
8.1.180.0080.00018.10
8.1.170.0060.00618.19
8.1.160.0070.00021.98
8.1.150.0030.00518.72
8.1.140.0000.00817.38
8.1.130.0000.00717.77
8.1.120.0000.00717.39
8.1.110.0040.00417.29
8.1.100.0040.00417.27
8.1.90.0000.00817.35
8.1.80.0000.00717.36
8.1.70.0030.00317.31
8.1.60.0050.00317.53
8.1.50.0000.00717.39
8.1.40.0070.00017.31
8.1.30.0040.00417.46
8.1.20.0080.00017.54
8.1.10.0080.00017.32
8.1.00.0040.00417.24
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0000.00718.36
8.0.270.0000.00717.22
8.0.260.0030.00317.18
8.0.250.0030.00316.84
8.0.240.0000.00716.90
8.0.230.0030.00316.81
8.0.220.0000.00716.82
8.0.210.0030.00316.81
8.0.200.0030.00616.80
8.0.190.0040.00416.75
8.0.180.0070.00016.89
8.0.170.0040.00416.81
8.0.160.0000.00816.70
8.0.150.0000.00716.61
8.0.140.0090.00016.77
8.0.130.0000.00513.35
8.0.120.0000.00716.75
8.0.110.0040.00416.80
8.0.100.0070.00016.73
8.0.90.0000.00716.81
8.0.80.0080.01216.75
8.0.70.0040.00416.86
8.0.60.0000.00716.71
8.0.50.0050.00316.64
8.0.30.0130.00917.04
8.0.20.0050.01417.40
8.0.10.0070.00016.85
8.0.00.0060.01316.60
7.4.330.0000.00515.20
7.4.320.0000.00716.48
7.4.300.0060.00016.34
7.4.290.0030.00316.40
7.4.280.0070.00416.50
7.4.270.0040.00416.58
7.4.260.0000.00716.49
7.4.250.0040.00416.40
7.4.240.0030.00416.53
7.4.230.0040.00416.61
7.4.220.0130.00616.49
7.4.210.0070.01316.69
7.4.200.0000.00716.66
7.4.160.0150.00016.53
7.4.150.0120.00617.40
7.4.140.0170.00217.86
7.4.130.0110.00616.49
7.4.120.0110.00516.37
7.4.110.0110.00716.46
7.4.100.0110.00616.44
7.4.90.0120.00816.53
7.4.80.0100.00618.80
7.4.70.0160.00016.46
7.4.60.0040.01416.44
7.4.50.0030.00616.38
7.4.40.0060.01116.41
7.4.30.0060.00916.42
7.4.00.0070.00914.89
7.3.330.0030.00313.11
7.3.320.0060.00012.93
7.3.310.0050.00216.25
7.3.300.0070.00016.22
7.3.290.0070.00716.18
7.3.280.0140.00416.18
7.3.270.0080.01117.40
7.3.260.0070.01016.17
7.3.250.0110.01016.38
7.3.240.0100.00716.23
7.3.230.0130.01016.39
7.3.210.0100.00716.36
7.3.200.0130.00619.39
7.3.190.0140.00316.23
7.3.180.0090.00616.47
7.3.170.0140.00316.30
7.3.160.0130.00316.28
7.3.120.0030.01414.84
7.3.110.0090.00614.25
7.3.100.0000.01514.55
7.3.90.0070.01114.96
7.3.80.0070.00714.68
7.3.70.0120.00314.33
7.3.60.0000.01414.68
7.3.50.0090.00614.51
7.3.40.0100.00314.82
7.3.30.0030.01214.56
7.3.20.0090.00616.68
7.3.10.0070.00716.28
7.3.00.0050.00816.56
7.2.330.0110.00716.34
7.2.320.0140.00416.59
7.2.310.0030.01216.68
7.2.300.0140.00316.61
7.2.290.0130.00316.36
7.2.250.0160.00314.85
7.2.240.0000.02015.07
7.2.230.0080.00314.96
7.2.220.0070.01114.80
7.2.210.0070.00414.89
7.2.200.0100.00314.52
7.2.190.0090.00615.09
7.2.180.0000.01514.70
7.2.170.0130.00315.07
7.2.130.0180.00416.89
7.2.120.0130.01116.79
7.2.110.0120.00916.84
7.2.100.0140.00816.64
7.2.90.0090.01216.65
7.2.80.0050.01416.63
7.2.70.0070.01016.76
7.2.60.0090.00816.77
7.2.50.0130.00316.74
7.2.40.0110.00716.81
7.2.30.0060.01216.72
7.2.20.0060.00916.68
7.2.10.0100.00716.79
7.2.00.0050.00918.00
7.1.330.0070.00415.74
7.1.320.0060.00315.89
7.1.310.0070.00716.07
7.1.300.0030.00615.61
7.1.290.0100.00315.83
7.1.280.0000.01415.89
7.1.270.0090.00315.80
7.1.260.0070.00315.70
7.1.250.0130.01015.36
7.1.240.0060.01715.74
7.1.230.0180.00415.77
7.1.220.0130.00815.85
7.1.210.0120.01315.65
7.1.200.0060.01415.85
7.1.190.0120.00615.44
7.1.180.0030.01015.41
7.1.170.0100.00715.62
7.1.160.0070.00715.64
7.1.150.0070.01015.27
7.1.140.0130.00315.80
7.1.130.0070.00715.61
7.1.120.0030.00915.68
7.1.110.0070.00315.57
7.1.100.0020.00916.95
7.1.90.0040.01115.76
7.1.80.0060.00815.67
7.1.70.0080.00416.55
7.1.60.0090.00917.57
7.1.50.0090.01116.33
7.1.40.0030.01315.58
7.1.30.0030.00615.86
7.1.20.0100.00715.78
7.1.10.0090.00315.59
7.1.00.0050.04218.98
7.0.330.0000.01715.20
7.0.320.0090.00615.30
7.0.310.0070.01115.07
7.0.300.0100.00614.88
7.0.290.0130.00315.08
7.0.280.0070.00715.41
7.0.270.0060.00715.27
7.0.260.0070.00715.30
7.0.250.0090.00615.32
7.0.240.0030.00915.61
7.0.230.0060.00615.20
7.0.220.0070.01015.24
7.0.210.0060.00615.25
7.0.200.0010.00915.89
7.0.190.0000.00915.11
7.0.180.0070.00715.07
7.0.170.0030.01014.74
7.0.160.0070.00715.36
7.0.150.0060.00915.00
7.0.140.0020.04518.74
7.0.130.0000.01415.07
7.0.120.0040.00414.82
7.0.110.0000.01715.00
7.0.100.0040.00815.06
7.0.90.0080.00415.26
7.0.80.0100.00715.14
7.0.70.1460.01717.58
7.0.60.0000.02917.55
7.0.50.0050.03816.62
7.0.40.0090.04316.86
7.0.30.0100.03716.67
7.0.20.0090.03016.65
7.0.10.0210.03616.75
7.0.00.0020.02716.77
5.6.380.0120.00814.02
5.6.370.0110.00414.33
5.6.360.0060.01014.11
5.6.350.0110.00414.38
5.6.340.0030.00614.33
5.6.330.0030.01013.87
5.6.320.0030.01314.45
5.6.310.0060.00914.40
5.6.300.0090.00613.83
5.6.290.0070.01014.21
5.6.280.0040.03917.37
5.6.270.0000.00913.92
5.6.260.0060.00614.04
5.6.250.0080.00613.95
5.6.240.0070.00313.92
5.6.230.0140.00014.34
5.6.220.0060.00614.13
5.6.210.0100.01817.47
5.6.200.0030.03116.17
5.6.190.0060.04317.22
5.6.180.0060.03617.30
5.6.170.0100.02617.09
5.6.160.0130.04117.17
5.6.150.0060.02816.01
5.6.140.0080.04316.16
5.6.130.0070.04316.12
5.6.120.0110.04017.66
5.6.110.0050.03017.60
5.6.100.0070.04317.60
5.6.90.0090.04617.58
5.6.80.0000.03317.12
5.6.70.0130.03517.25
5.6.60.0070.00714.00
5.6.50.0110.00414.03
5.6.40.0120.00314.19
5.6.30.0060.00613.95
5.6.20.0100.00714.08
5.6.10.0080.00313.88
5.6.00.0140.00014.03
5.5.380.0030.00911.18
5.5.370.0060.00611.18
5.5.360.0060.00611.18
5.5.350.0030.04215.81
5.5.340.0060.04314.58
5.5.330.0050.04415.71
5.5.320.0000.02515.71
5.5.310.0120.03815.73
5.5.300.0080.04514.60
5.5.290.0050.02814.54
5.5.280.0060.02115.91
5.5.270.0070.03115.98
5.5.260.0070.02215.99
5.5.250.0060.03615.88
5.5.240.0060.04015.65
5.5.230.0030.00611.18
5.5.220.0000.00811.18
5.5.210.0080.00211.18
5.5.200.0060.00011.18
5.5.190.0000.00511.18
5.5.180.0070.00411.18
5.5.170.0040.00411.18
5.5.160.0040.00411.18
5.5.150.0040.00411.18
5.5.140.0040.00411.18
5.5.130.0000.00711.18
5.5.120.0000.00911.18
5.5.110.0030.00311.18
5.5.100.0070.00311.18
5.5.90.0000.00711.18
5.5.80.0030.00911.18
5.5.70.0030.00711.18
5.5.60.0030.00711.18
5.5.50.0000.01011.18
5.5.40.0000.01111.18
5.5.30.0030.00711.18
5.5.20.0060.00611.18
5.5.10.0100.00311.18
5.5.00.0080.00411.18
5.4.450.0310.02515.32
5.4.440.0380.03715.40
5.4.430.0420.02815.31
5.4.420.0370.00115.16
5.4.410.0330.00415.26
5.4.400.0320.00415.12
5.4.390.0340.00415.13
5.4.380.0260.02314.90
5.4.370.0270.02714.95
5.4.360.0220.03814.94
5.4.350.0180.03514.84
5.4.340.0200.03014.94
5.4.330.0030.00511.18
5.4.320.0060.01911.81
5.4.310.0070.01911.81
5.4.300.0050.01911.81
5.4.290.0030.02311.81
5.4.280.0060.01911.76
5.4.270.0020.02411.76
5.4.260.0050.02111.76
5.4.250.0030.02511.76
5.4.240.0070.01911.76
5.4.230.0070.02111.76
5.4.220.0020.02311.76
5.4.210.0080.01911.76
5.4.200.0070.02011.76
5.4.190.0040.02211.76
5.4.180.0030.02111.76
5.4.170.0040.02011.76
5.4.160.0020.02311.76
5.4.150.0020.02411.76
5.4.140.0040.02411.60
5.4.130.0040.02211.60
5.4.120.0030.02111.57
5.4.110.0030.02211.57
5.4.100.0070.01911.57
5.4.90.0060.01811.57
5.4.80.0030.02111.57
5.4.70.0060.02011.57
5.4.60.0060.02111.57
5.4.50.0040.02211.57
5.4.40.0060.02111.56
5.4.30.0060.02011.56
5.4.20.0020.02311.56
5.4.10.0040.01911.56
5.4.00.0080.01811.30
5.3.290.0070.02011.99
5.3.280.0060.02111.94
5.3.270.0050.02111.95
5.3.260.0050.02111.95
5.3.250.0030.02111.95
5.3.240.0070.02011.95
5.3.230.0020.02611.94
5.3.220.0050.02111.93
5.3.210.0050.02011.93
5.3.200.0040.01911.93
5.3.190.0060.02511.93
5.3.180.0050.02311.92
5.3.170.0030.02211.92
5.3.160.0070.01911.92
5.3.150.0030.02111.93
5.3.140.0020.02311.92
5.3.130.0060.02111.92
5.3.120.0060.02011.92
5.3.110.0070.02211.92
5.3.100.0070.02211.65
5.3.90.0040.02211.63
5.3.80.0050.02211.62
5.3.70.0040.02111.62
5.3.60.0040.02111.62
5.3.50.0040.02211.59
5.3.40.0070.01911.59
5.3.30.0050.02111.56
5.3.20.0070.01911.45
5.3.10.0030.02311.43
5.3.00.0050.02011.43
5.2.170.0030.02010.18
5.2.160.0050.01510.18
5.2.150.0020.02010.18
5.2.140.0040.01710.18
5.2.130.0050.01610.16
5.2.120.0030.01610.15
5.2.110.0020.01710.16
5.2.100.0060.01510.16
5.2.90.0040.01810.16
5.2.80.0030.02010.15
5.2.70.0040.01910.15
5.2.60.0050.01510.13
5.2.50.0040.01810.12
5.2.40.0030.01610.11
5.2.30.0040.01810.09
5.2.20.0060.01510.08
5.2.10.0060.01510.05
5.2.00.0040.0169.98
5.1.60.0030.0189.62
5.1.50.0040.0159.62
5.1.40.0020.0179.61
5.1.30.0050.0169.78
5.1.20.0060.0189.79
5.1.10.0060.0149.65
5.1.00.0040.0169.65
5.0.50.0040.0118.90
5.0.40.0070.0098.83
5.0.30.0020.0208.73
5.0.20.0020.0138.72
5.0.10.0030.0138.71
5.0.00.0040.0178.70
4.4.90.0030.0137.98
4.4.80.0010.0107.96
4.4.70.0040.0097.96
4.4.60.0050.0077.97
4.4.50.0030.0137.97
4.4.40.0070.0117.94
4.4.30.0010.0107.97
4.4.20.0030.0108.01
4.4.10.0020.0118.01
4.4.00.0050.0137.96
4.3.110.0030.0107.92
4.3.100.0040.0097.92
4.3.90.0040.0097.90
4.3.80.0040.0137.88
4.3.70.0030.0097.90
4.3.60.0070.0057.90
4.3.50.0030.0107.90
4.3.40.0060.0117.86
4.3.30.0010.0127.23
4.3.20.0030.0097.22
4.3.10.0010.0127.20
4.3.00.0130.01813.78

preferences:
58.43 ms | 400 KiB | 5 Q