3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = "ab"; $s1 = "cAbfAbe"; $s2 = $s; do { $s2 = stristr($s1,$s2); echo $s2."\n"; echo substr($s2,0,count($s)+1).".\n"; } while ($s2); echo str_ireplace($s,$s,$s1);

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)
8.3.60.0100.01018.68
8.3.50.0190.01021.99
8.3.40.0040.01118.96
8.3.30.0140.00019.13
8.3.20.0070.00020.21
8.3.10.0060.00322.09
8.3.00.0050.00322.32
8.2.180.0100.00616.63
8.2.170.0140.00722.96
8.2.160.0000.01520.94
8.2.150.0000.00724.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00417.63
8.2.110.0060.00322.16
8.2.100.0040.00819.64
8.2.90.0040.00419.05
8.2.80.0060.00319.76
8.2.70.0040.00417.50
8.2.60.0000.00817.92
8.2.50.0080.00018.07
8.2.40.0030.00618.22
8.2.30.0070.00418.06
8.2.20.0000.00817.59
8.2.10.0040.00419.59
8.2.00.0040.00417.72
8.1.280.0090.00925.92
8.1.270.0040.00422.25
8.1.260.0030.00626.35
8.1.250.0040.00428.09
8.1.240.0030.00623.84
8.1.230.0060.00619.03
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0040.00417.36
8.1.190.0040.00417.41
8.1.180.0050.00318.10
8.1.170.0000.00818.66
8.1.160.0050.00221.89
8.1.150.0000.00718.63
8.1.140.0000.00717.44
8.1.130.0080.00017.82
8.1.120.0000.00717.43
8.1.110.0000.00817.45
8.1.100.0040.00417.34
8.1.90.0000.00817.46
8.1.80.0030.00317.51
8.1.70.0030.00317.32
8.1.60.0060.00317.58
8.1.50.0040.00417.47
8.1.40.0030.00517.41
8.1.30.0040.00417.67
8.1.20.0000.00717.71
8.1.10.0000.00717.61
8.1.00.0040.00417.43
8.0.300.0070.00018.77
8.0.290.0060.00317.16
8.0.280.0000.00718.35
8.0.270.0070.00017.25
8.0.260.0030.00316.86
8.0.250.0000.00716.88
8.0.240.0040.00416.97
8.0.230.0030.00317.01
8.0.220.0070.00016.86
8.0.210.0030.00316.82
8.0.200.0080.00017.04
8.0.190.0000.00817.04
8.0.180.0040.00416.80
8.0.170.0000.00716.92
8.0.160.0050.00216.96
8.0.150.0070.00016.91
8.0.140.0090.00016.91
8.0.130.0000.00513.33
8.0.120.0080.00016.97
8.0.110.0040.00416.97
8.0.100.0070.00016.98
8.0.90.0030.00516.75
8.0.80.0040.01216.86
8.0.70.0050.00216.97
8.0.60.0040.00416.83
8.0.50.0040.00417.00
8.0.30.0090.00917.04
8.0.20.0120.01017.40
8.0.10.0040.00416.93
8.0.00.0080.01016.66
7.4.330.0030.00315.09
7.4.320.0050.00316.41
7.4.300.0000.00916.37
7.4.290.0000.00816.33
7.4.280.0000.01016.48
7.4.270.0000.00816.47
7.4.260.0100.00016.44
7.4.250.0040.00816.48
7.4.240.0010.00816.42
7.4.230.0100.00016.26
7.4.220.0080.02116.49
7.4.210.0140.01116.48
7.4.200.0040.00416.57
7.4.190.0050.00516.54
7.4.160.0160.01616.52
7.4.150.0490.01517.40
7.4.140.0240.02217.86
7.4.130.0350.02116.44
7.4.120.0200.02616.45
7.4.110.0190.01916.55
7.4.100.0770.01716.59
7.4.90.0540.01216.30
7.4.80.0180.01419.39
7.4.70.0080.01916.53
7.4.60.0430.03016.52
7.4.50.0040.00816.31
7.4.40.0050.01822.77
7.4.30.0210.01116.56
7.3.330.0050.00513.28
7.3.320.0000.00713.18
7.3.310.0040.00416.38
7.3.300.0040.00416.26
7.3.290.0150.00516.23
7.3.280.0150.01216.25
7.3.270.0160.01617.40
7.3.260.0200.02416.27
7.3.250.0390.01816.28
7.3.240.0190.01616.17
7.3.230.0660.02716.47
7.3.210.0430.02016.48
7.3.200.0160.01919.39
7.3.190.0200.01716.38
7.3.180.0300.00916.14
7.3.170.0710.02416.50
7.3.160.0650.02216.38
7.2.330.0330.02716.29
7.2.320.1300.03416.36
7.2.310.0770.01916.72
7.2.300.0830.01716.52
7.2.290.0200.01216.73
7.2.100.0760.00314.41
7.2.90.0630.01014.33
7.2.80.0080.01614.29
7.2.70.0850.01914.73
7.2.60.0910.01214.69
7.2.50.0870.00614.69
7.2.40.0780.00614.93
7.2.30.0230.00814.98
7.2.20.0420.00014.69
7.2.10.1620.00414.76
7.2.00.0250.01115.02
7.1.220.1190.01413.64
7.1.210.0400.01713.51
7.1.200.0880.01513.77
7.1.190.1420.04413.70
7.1.180.1780.01713.52
7.1.170.1170.02213.82
7.1.160.1540.03413.74
7.1.150.0260.02013.76
7.1.140.0520.01613.71
7.1.130.0580.01414.00
7.1.120.0560.01713.82
7.1.110.1450.01013.82
7.1.100.0280.02413.99
7.1.90.0570.02214.00
7.1.80.1300.01713.98
7.1.70.0240.01413.76
7.1.60.0600.00331.85
7.1.50.0590.03732.02
7.1.40.1170.02632.04
7.1.30.0580.01632.05
7.1.20.0940.02432.14
7.1.10.0430.01314.00
7.1.00.0200.03013.87
7.0.310.0770.01813.39
7.0.300.0870.02513.29
7.0.290.0810.02113.59
7.0.280.1770.00913.49
7.0.270.0430.02713.36
7.0.260.0900.00713.33
7.0.250.0500.02213.41
7.0.240.0160.02013.70
7.0.230.0980.01813.79
7.0.220.0330.01513.59
7.0.210.1310.02913.70
7.0.200.1110.02313.69
7.0.190.0890.02213.62
7.0.180.0860.01513.63
7.0.170.0920.01613.42
7.0.160.0350.00813.43
7.0.150.1120.00913.82
7.0.140.1500.00713.43
7.0.130.0310.01913.37
7.0.120.1120.02113.74
7.0.110.0390.02313.59
7.0.100.0820.01713.52
7.0.90.1750.02813.51
7.0.80.0450.01913.56
7.0.70.0940.02813.74
7.0.60.1170.01713.66
7.0.50.0870.01313.84
7.0.40.0150.01913.43
7.0.30.0350.01913.39
7.0.20.0920.02013.39
7.0.10.0990.03013.68
7.0.00.1770.01313.69
5.6.380.0510.03014.00
5.6.370.0260.01914.00
5.6.360.0470.01414.17
5.6.350.0190.00814.42
5.6.340.0580.01314.40
5.6.330.0220.03114.04
5.6.320.0160.02514.16
5.6.310.0240.03314.42
5.6.300.0290.03514.35
5.6.290.0410.00814.30
5.6.280.0290.03814.37
5.6.270.0330.02414.41
5.6.260.0220.01114.34
5.6.250.0250.02814.13
5.6.240.0310.01914.30
5.6.230.0300.01514.25
5.6.220.0350.02514.15
5.6.210.0110.02914.44
5.6.200.0380.03514.37
5.6.190.0280.01214.54
5.6.180.0280.01314.36
5.6.170.0500.02514.35
5.6.160.0390.02114.60
5.6.150.0090.03114.26
5.6.140.0200.03713.92
5.6.130.0330.01014.39
5.6.120.0320.03514.41
5.6.110.0320.02914.20
5.6.100.0490.03314.12
5.6.90.0320.01014.47
5.6.80.0200.01413.91
5.5.380.0160.02212.45
5.5.370.0240.02012.45
5.5.360.0230.03112.45
5.5.350.0350.04212.45
5.5.340.0240.01012.45
5.5.330.0340.03012.45
5.5.320.0340.01712.45
5.5.310.0220.04312.45
5.5.300.0240.02012.45
5.5.290.0320.02412.45
5.5.280.0120.01512.45
5.5.270.0270.02312.45
5.5.260.0370.03212.45
5.5.250.0220.01612.45
5.5.240.0210.02512.45
5.4.450.0090.02212.45
5.4.440.0320.01812.45
5.4.430.0250.02512.45
5.4.420.0400.01212.45
5.4.410.0230.02312.45
5.4.400.0450.01012.45

preferences:
35.88 ms | 401 KiB | 5 Q