3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'III.OOO.OOO.S'; $search = 'OOO'; $replace = 'B'; //replace ONLY FIRST occurance of "OOO" with "B" echo substr_replace($string,$replace,0,strlen($search)); //$string => B.OOO.OOO.S echo "\n---\n"; //replace ONLY LAST occurance of "OOOO" with "B" echo substr_replace($string,$replace,strrpos($string,$search),strlen($search)); //$string => OOO.OOO.B.S echo "\n---\n"; //replace ONLY LAST occurance of "OOOO" with "B" echo strrev(implode(strrev($replace),explode(strrev($search),strrev($string),2))); //$string => OOO.OOO.B.S

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)
8.3.60.0070.01418.18
8.3.50.0220.00018.21
8.3.40.0070.01518.70
8.3.30.0090.00618.38
8.3.20.0050.00221.63
8.3.10.0030.00520.52
8.3.00.0080.00019.13
8.2.180.0080.00818.16
8.2.170.0090.00922.96
8.2.160.0100.00319.46
8.2.150.0060.00325.66
8.2.140.0040.00424.66
8.2.130.0040.00418.03
8.2.120.0070.00026.35
8.2.110.0060.00322.11
8.2.100.0000.01217.72
8.2.90.0050.00317.75
8.2.80.0000.00818.61
8.2.70.0080.00019.12
8.2.60.0050.00317.50
8.2.50.0040.00418.10
8.2.40.0080.00020.84
8.2.30.0000.00719.09
8.2.20.0040.00418.10
8.2.10.0040.00419.34
8.2.00.0070.00017.98
8.1.280.0120.00325.92
8.1.270.0080.00020.23
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0050.00323.83
8.1.230.0030.00917.83
8.1.220.0000.00717.74
8.1.210.0080.00018.77
8.1.200.0080.00017.23
8.1.190.0000.00817.35
8.1.180.0050.00318.10
8.1.170.0000.00818.50
8.1.160.0070.00018.73
8.1.150.0000.00818.72
8.1.140.0030.00320.29
8.1.130.0030.00620.16
8.1.120.0070.00317.34
8.1.110.0000.00717.37
8.1.100.0000.00717.30
8.1.90.0070.00017.39
8.1.80.0040.00417.35
8.1.70.0000.00817.38
8.1.60.0030.00617.48
8.1.50.0050.00317.48
8.1.40.0040.00417.40
8.1.30.0000.00717.53
8.1.20.0030.00617.58
8.1.10.0000.00717.40
8.1.00.0000.00817.45
8.0.300.0000.00818.77
8.0.290.0080.00016.61
8.0.280.0050.00318.49
8.0.270.0050.00317.25
8.0.260.0030.00318.43
8.0.250.0000.00716.95
8.0.240.0070.00016.95
8.0.230.0000.00716.75
8.0.220.0040.00416.85
8.0.210.0000.00716.82
8.0.200.0070.00016.94
8.0.190.0080.00016.84
8.0.180.0000.00816.83
8.0.170.0100.00016.77
8.0.160.0000.00816.82
8.0.150.0040.00316.82
8.0.140.0000.00716.79
8.0.130.0060.00013.23
8.0.120.0020.00516.69
8.0.110.0040.00416.72
8.0.100.0000.00716.64
8.0.90.0050.00316.68
8.0.80.0030.01216.77
8.0.70.0030.00516.94
8.0.60.0040.00416.80
8.0.50.0040.00416.75
8.0.30.0080.00817.22
8.0.20.0060.01417.19
8.0.10.0000.00716.78
8.0.00.0100.00916.79
7.4.330.0050.00015.55
7.4.320.0050.00316.52
7.4.300.0030.00316.32
7.4.290.0000.00616.52
7.4.280.0000.00716.52
7.4.270.0040.00416.38
7.4.260.0030.00316.43
7.4.250.0000.00716.53
7.4.240.0070.00016.53
7.4.230.0070.00016.40
7.4.220.0070.00016.23
7.4.210.0040.01016.48
7.4.200.0030.00316.55
7.4.160.0070.00916.39
7.4.140.0140.00417.86
7.4.130.0130.00616.46
7.4.120.0030.01416.46
7.4.110.0170.00716.58
7.4.100.0140.00916.46
7.4.90.0140.00316.32
7.4.80.0090.00919.39
7.4.70.0040.01416.55
7.4.60.0060.01216.37
7.4.50.0040.00816.54
7.4.40.0100.00716.37
7.4.00.0000.01615.08
7.3.330.0000.00513.07
7.3.320.0000.00512.99
7.3.310.0030.00315.97
7.3.300.0030.00316.23
7.3.290.0030.00316.03
7.3.280.0090.01016.19
7.3.260.0100.00916.21
7.3.240.0110.00816.38
7.3.230.0090.00616.58
7.3.210.0060.00916.21
7.3.200.0060.01016.56
7.3.190.0150.00616.38
7.3.180.0080.00816.43
7.3.170.0120.00916.50
7.3.160.0070.01416.38
7.3.120.0070.00717.15
7.3.110.0030.00917.15
7.3.100.0060.00617.15
7.3.90.0060.00617.15
7.3.80.0050.00417.15
7.3.70.0060.01017.15
7.3.60.0040.01117.15
7.3.50.0030.01317.15
7.3.40.0070.00717.15
7.3.30.0070.00717.15
7.3.20.0460.00916.03
7.3.10.1070.00415.86
7.3.00.0460.00315.89
7.2.330.0060.01316.69
7.2.320.0120.01116.58
7.2.310.0060.00916.30
7.2.300.0060.01216.52
7.2.290.0110.01016.65
7.2.240.0040.00817.15
7.2.230.0100.00717.15
7.2.220.0000.01017.15
7.2.210.0000.01117.15
7.2.200.0100.00317.15
7.2.190.0000.01017.15
7.2.180.0070.01117.15
7.2.170.0070.00417.15
7.2.160.0040.00717.15
7.2.150.0590.00916.05
7.2.140.0560.01316.07
7.2.130.0500.00816.04
7.2.120.0440.00616.07
7.2.110.0410.00316.11
7.2.100.0450.01015.93
7.2.90.0460.00716.13
7.2.80.0360.00815.94
7.2.70.0380.01216.00
7.2.60.0350.00316.05
7.2.50.0350.00916.01
7.2.40.0400.00815.86
7.2.30.0310.00815.95
7.2.20.0380.00716.04
7.2.10.0490.00316.05
7.2.00.0550.00815.97
7.1.330.0000.01717.15
7.1.320.0030.00917.15
7.1.310.0030.01017.15
7.1.300.0100.00317.15
7.1.290.0080.00817.15
7.1.280.0060.00617.15
7.1.270.0000.01317.15
7.1.260.0060.01017.15
7.1.250.0430.00815.53

preferences:
60.82 ms | 401 KiB | 5 Q