3v4l.org

run code in 300+ PHP versions simultaneously
<?php $utf8string = 'Králíček azurit'; $var = 'hello123'; $pos = strpos($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)
8.3.60.0120.00618.25
8.3.50.0120.00821.98
8.3.40.0030.01018.54
8.3.30.0030.01019.06
8.3.20.0040.00420.25
8.3.10.0070.00021.77
8.3.00.0000.00817.66
8.2.180.0120.00318.17
8.2.170.0140.00722.96
8.2.160.0070.00720.38
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00020.94
8.2.110.0030.00722.08
8.2.100.0080.00417.84
8.2.90.0040.00419.23
8.2.80.0060.00317.97
8.2.70.0000.00817.50
8.2.60.0080.00017.90
8.2.50.0090.00018.10
8.2.40.0070.00018.09
8.2.30.0000.01018.20
8.2.20.0070.00017.61
8.2.10.0000.00717.92
8.2.00.0000.00717.61
8.1.280.0070.00725.92
8.1.270.0090.00023.99
8.1.260.0000.00726.35
8.1.250.0070.00028.09
8.1.240.0000.00923.98
8.1.230.0040.00817.77
8.1.220.0040.00417.74
8.1.210.0030.00518.77
8.1.200.0030.00617.22
8.1.190.0030.00617.35
8.1.180.0050.00318.10
8.1.170.0000.01018.79
8.1.160.0040.00421.98
8.1.150.0000.00718.82
8.1.140.0000.00717.38
8.1.130.0030.00317.79
8.1.120.0040.00417.36
8.1.110.0040.00417.23
8.1.100.0000.00717.40
8.1.90.0030.00717.41
8.1.80.0020.00517.42
8.1.70.0000.00717.39
8.1.60.0060.00317.41
8.1.50.0030.00617.50
8.1.40.0050.00317.45
8.1.30.0040.00417.58
8.1.20.0000.00717.42
8.1.10.0000.00717.45
8.1.00.0040.00417.32
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0000.00718.28
8.0.270.0000.00717.14
8.0.260.0000.00617.21
8.0.250.0030.00316.77
8.0.240.0030.00516.76
8.0.230.0000.00716.86
8.0.220.0070.00016.79
8.0.210.0050.00216.82
8.0.200.0000.00616.75
8.0.190.0070.00016.88
8.0.180.0040.00416.80
8.0.170.0000.00816.73
8.0.160.0040.00416.88
8.0.150.0070.00016.68
8.0.140.0030.00316.84
8.0.130.0000.00713.28
8.0.120.0040.00416.77
8.0.110.0020.00516.80
8.0.100.0000.00716.77
8.0.90.0000.00716.68
8.0.80.0070.00716.76
8.0.70.0000.00716.69
8.0.60.0000.00816.71
8.0.50.0040.00416.80
8.0.30.0110.01117.02
8.0.20.0140.00517.40
8.0.10.0040.00416.85
8.0.00.0110.00616.65
7.4.330.0000.00515.10
7.4.320.0030.00316.45
7.4.300.0030.00316.48
7.4.290.0000.00716.61
7.4.280.0040.00316.60
7.4.270.0000.00716.48
7.4.260.0080.00016.49
7.4.250.0040.00416.49
7.4.240.0000.00816.49
7.4.230.0000.00716.61
7.4.220.0100.00716.46
7.4.210.0000.01416.56
7.4.200.0040.00416.66
7.4.160.0100.00616.18
7.4.150.0100.00717.40
7.4.140.0100.00717.86
7.4.130.0140.00216.33
7.4.120.0090.00916.46
7.4.110.0030.01316.31
7.4.100.0070.01016.50
7.4.90.0140.01116.49
7.4.80.0150.00319.39
7.4.70.0070.01016.31
7.4.60.0080.00816.34
7.4.50.0070.00016.13
7.4.40.0160.00016.34
7.4.30.0060.01016.35
7.4.00.0070.01014.90
7.3.330.0060.00013.11
7.3.320.0050.00012.98
7.3.310.0070.00016.26
7.3.300.0030.00316.18
7.3.290.0040.01516.15
7.3.280.0100.00716.19
7.3.270.0190.00617.40
7.3.260.0100.01316.39
7.3.250.0090.00916.33
7.3.240.0040.01316.20
7.3.230.0120.00316.39
7.3.210.0100.01716.16
7.3.200.0060.01016.29
7.3.190.0090.00916.45
7.3.180.0080.00816.39
7.3.170.0170.00016.27
7.3.160.0130.00316.51
7.3.120.0050.01014.54
7.3.110.0040.01114.58
7.3.100.0080.00614.82
7.3.90.0040.01214.76
7.3.80.0080.00814.74
7.3.70.0030.01014.57
7.3.60.0030.00814.77
7.3.50.0060.00914.70
7.3.40.0000.01614.66
7.3.30.0130.00314.73
7.3.20.0050.00916.58
7.3.10.0050.00816.58
7.3.00.0050.00916.55
7.2.330.0070.01016.42
7.2.320.0040.01316.60
7.2.310.0060.01516.61
7.2.300.0100.00616.32
7.2.290.0040.01416.55
7.2.250.0000.01814.97
7.2.240.0030.01214.92
7.2.230.0080.00814.94
7.2.220.0020.00914.98
7.2.210.0060.00614.96
7.2.200.0050.01314.63
7.2.190.0080.00614.99
7.2.180.0050.01114.79
7.2.170.0040.00714.77
7.2.160.0140.00015.00
7.2.150.0070.00316.88
7.2.140.0030.00916.84
7.2.130.0100.00316.63
7.2.120.0050.00716.80
7.2.110.0100.00316.83
7.2.100.0120.00516.84
7.2.90.0080.00516.83
7.2.80.0060.00616.77
7.2.70.0000.01216.85
7.2.60.0010.00916.85
7.2.50.0080.00816.76
7.2.40.0010.01216.94
7.2.30.0000.01416.82
7.2.20.0080.00416.90
7.2.10.0030.01116.63
7.2.00.0080.00317.65
7.1.330.0070.00715.77
7.1.320.0050.01015.71
7.1.310.0090.00715.80
7.1.300.0060.00915.78
7.1.290.0050.00915.79
7.1.280.0050.01215.78
7.1.270.0030.00915.59
7.1.260.0090.00615.76
7.1.250.0030.00715.68
7.1.70.0070.00317.15
7.1.60.0070.00416.90
7.1.50.0100.01016.92
7.1.00.0070.07022.57
7.0.200.0080.00016.72
7.0.140.0130.06322.10
7.0.60.0130.03319.84
7.0.50.0000.06317.79
7.0.40.0070.04019.99
7.0.30.0200.03720.17
7.0.20.0270.06720.04
7.0.10.0300.04720.12
7.0.00.0070.04020.09
5.6.280.0070.06721.06
5.6.210.0200.06720.75
5.6.200.0100.05018.15
5.6.190.0070.04720.61
5.6.180.0270.06320.61
5.6.170.0270.07720.48
5.6.160.0100.08020.48
5.6.150.0030.03718.18
5.6.140.0070.06718.22
5.6.130.0070.08318.12
5.6.120.0100.08020.96
5.6.110.0070.03721.02
5.6.100.0100.07021.02
5.6.90.0100.08320.97
5.6.80.0030.08020.40
5.6.70.0330.07020.50
5.5.350.0130.08720.48
5.5.340.0070.08017.93
5.5.330.0100.03720.19
5.5.320.0300.04720.34
5.5.310.0330.08020.21
5.5.300.0030.04318.00
5.5.290.0070.08017.88
5.5.280.0170.05020.95
5.5.270.0030.09020.67
5.5.260.0070.04020.85
5.5.250.0070.08320.48
5.5.240.0100.07720.24
5.4.450.0670.07319.61
5.4.440.0130.06019.63
5.4.430.0300.04019.29
5.4.420.0130.05719.63
5.4.410.0130.04718.97
5.4.400.0470.06718.62
5.4.390.0530.05318.59
5.4.380.0200.05318.65
5.4.370.0000.05018.68
5.4.360.0030.05718.68
5.4.350.0030.03811.97
5.4.340.0090.03411.97
5.4.320.0070.04212.46
5.4.310.0080.03912.45
5.4.300.0040.03912.46
5.4.290.0050.03812.45
5.4.280.0090.03212.35
5.4.270.0080.04212.35
5.4.260.0070.03712.35
5.4.250.0070.04912.35
5.4.240.0050.04112.35
5.4.230.0090.03812.34
5.4.220.0060.04512.34
5.4.210.0040.03712.34
5.4.200.0080.03512.34
5.4.190.0070.03412.34
5.4.180.0040.03712.34
5.4.170.0060.03512.35
5.4.160.0110.03012.34
5.4.150.0080.03412.34
5.4.140.0050.03812.02
5.4.130.0060.03612.01
5.4.120.0100.03111.97
5.4.110.0050.03611.96
5.4.100.0070.03411.96
5.4.90.0050.03811.96
5.4.80.0020.04311.97
5.4.70.0060.03911.96
5.4.60.0100.03611.41
5.4.50.0080.04111.96
5.4.40.0090.03711.95
5.4.30.0080.03711.95
5.4.20.0070.03811.95
5.4.10.0060.03811.95
5.4.00.0090.03111.44
5.3.290.0050.04012.80
5.3.280.0070.04412.71
5.3.270.0090.03612.72
5.3.260.0100.03812.71
5.3.250.0080.04712.72
5.3.240.0050.03812.72
5.3.230.0080.03912.71
5.3.220.0070.03712.68
5.3.210.0060.04012.68
5.3.200.0060.03712.68
5.3.190.0080.04112.68
5.3.180.0050.03912.67
5.3.170.0050.03912.67
5.3.160.0060.03712.67
5.3.150.0030.04012.67
5.3.140.0080.03612.66
5.3.130.0050.04012.66
5.3.120.0070.03812.66
5.3.110.0050.04012.66
5.3.100.0060.04512.11
5.3.90.0070.03912.09
5.3.80.0090.03912.07
5.3.70.0080.03912.07
5.3.60.0060.04212.06
5.3.50.0070.03712.00
5.3.40.0080.04312.00
5.3.30.0070.03911.94
5.3.20.0080.03711.72
5.3.10.0110.03411.69
5.3.00.0100.04811.67
5.2.170.0060.0339.18
5.2.160.0080.0409.18
5.2.150.0050.0329.18
5.2.140.0070.0399.18
5.2.130.0060.0369.13
5.2.120.0050.0289.13
5.2.110.0070.0339.14
5.2.100.0070.0369.14
5.2.90.0070.0319.14
5.2.80.0060.0319.13
5.2.70.0050.0339.13
5.2.60.0060.0309.09
5.2.50.0060.0339.06
5.2.40.0070.0339.03
5.2.30.0040.0399.00
5.2.20.0130.0328.99
5.2.10.0150.0208.91
5.2.00.0050.0308.77
5.1.60.0050.0298.06
5.1.50.0070.0258.05
5.1.40.0060.0288.04
5.1.30.0040.0308.38
5.1.20.0050.0368.41
5.1.10.0060.0248.13
5.1.00.0040.0248.13
5.0.50.0010.0236.62
5.0.40.0030.0196.47
5.0.30.0040.0386.29
5.0.20.0040.0266.25
5.0.10.0040.0256.23
5.0.00.0060.0326.23
4.4.90.0060.0214.78
4.4.80.0020.0214.75
4.4.70.0030.0154.75
4.4.60.0040.0214.75
4.4.50.0010.0164.77
4.4.40.0010.0264.71
4.4.30.0020.0154.75
4.4.20.0030.0214.84
4.4.10.0010.0204.85
4.4.00.0020.0274.76
4.3.110.0010.0164.67
4.3.100.0050.0134.66
4.3.90.0050.0214.63
4.3.80.0020.0244.58
4.3.70.0060.0214.63
4.3.60.0030.0154.63
4.3.50.0030.0154.63
4.3.40.0020.0244.53
4.3.30.0030.0153.28
4.3.20.0040.0153.26
4.3.10.0040.0133.21
4.3.00.0000.0237.12

preferences:
52.94 ms | 401 KiB | 5 Q