3v4l.org

run code in 500+ PHP versions simultaneously
<?php $str = "[House-3-BLUE]"; echo substr_replace($str, strtolower(substr($str,1,1)), 1, 1);

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)
8.5.90.0090.00816.95
8.5.80.0060.00216.63
8.5.70.0110.00816.61
8.5.60.0140.00416.54
8.5.50.0080.00916.55
8.5.30.0120.00719.64
8.5.20.0120.00519.44
8.5.10.0040.00418.39
8.5.00.0130.00719.58
8.4.240.0140.00719.56
8.4.230.0070.00219.48
8.4.220.0140.00622.05
8.4.210.0120.00919.39
8.4.180.0160.00525.76
8.4.170.0120.00924.02
8.4.160.0110.01123.84
8.4.150.0090.00416.82
8.4.140.0130.00717.34
8.4.130.0130.00817.61
8.4.120.0060.01321.76
8.4.110.0120.00718.77
8.4.100.0110.00917.78
8.4.90.0110.00918.53
8.4.80.0060.00319.28
8.4.70.0060.00217.70
8.4.60.0150.00518.65
8.4.50.0150.00518.60
8.4.40.0160.00317.42
8.4.30.0070.01122.34
8.4.20.0040.00420.78
8.4.10.0030.00719.41
8.3.320.0110.00818.32
8.3.310.0100.00818.37
8.3.300.0100.01122.27
8.3.290.0130.01120.88
8.3.280.0110.01018.18
8.3.270.0090.01016.32
8.3.260.0100.00916.39
8.3.250.0120.00718.72
8.3.240.0070.00816.54
8.3.230.0130.00716.70
8.3.220.0050.00217.13
8.3.210.0080.00516.61
8.3.200.0060.00316.48
8.3.190.0120.00617.30
8.3.180.0120.00616.23
8.3.170.0040.00416.50
8.3.160.0080.00016.72
8.3.150.0160.00317.11
8.3.140.0110.00716.86
8.3.130.0000.00818.20
8.3.120.0040.00418.48
8.3.110.0070.00420.94
8.3.100.0190.00018.47
8.3.90.0110.00726.77
8.3.80.0030.01016.75
8.3.70.0090.00616.58
8.3.60.0140.00418.31
8.3.50.0070.01217.17
8.3.40.0120.00918.89
8.3.30.0110.00418.33
8.3.20.0000.00720.60
8.3.10.0000.00821.90
8.3.00.0000.00823.71
8.2.320.0100.00917.88
8.2.310.0100.00917.95
8.2.300.0120.01118.21
8.2.290.0040.00520.36
8.2.280.0050.01018.22
8.2.270.0110.00716.49
8.2.260.0090.00618.73
8.2.250.0130.00716.72
8.2.240.0150.00418.78
8.2.230.0080.01122.58
8.2.220.0100.01024.06
8.2.210.0040.00426.77
8.2.200.0040.00718.16
8.2.190.0110.00716.63
8.2.180.0070.01425.92
8.2.170.0110.00319.08
8.2.160.0030.01022.25
8.2.150.0030.00624.18
8.2.140.0040.00424.66
8.2.130.0020.00526.16
8.2.120.0040.00426.16
8.2.110.0140.00719.27
8.2.100.0090.00317.72
8.2.90.0040.00417.91
8.2.80.0000.00919.17
8.2.70.0000.00817.63
8.2.60.0040.00417.63
8.2.50.0060.00317.55
8.2.40.0040.00419.11
8.2.30.0000.00719.26
8.2.20.0070.00018.12
8.2.10.0000.00719.24
8.2.00.0030.00319.17
8.1.340.0100.01019.88
8.1.330.0120.00721.74
8.1.320.0100.00815.91
8.1.310.0070.01016.59
8.1.300.0090.00619.70
8.1.290.0060.00330.84
8.1.280.0070.00725.92
8.1.270.0040.00422.07
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0080.00022.52
8.1.230.0070.00320.85
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0040.00417.10
8.1.190.0040.00417.23
8.1.180.0080.00018.10
8.1.170.0000.00818.46
8.1.160.0000.00718.87
8.1.150.0070.00018.81
8.1.140.0050.00318.79
8.1.130.0030.00620.03
8.1.120.0060.00317.41
8.1.110.0080.00017.38
8.1.100.0000.00917.42
8.1.90.0030.00317.30
8.1.80.0000.00817.31
8.1.70.0040.00417.37
8.1.60.0000.00817.52
8.1.50.0040.00417.45
8.1.40.0060.00317.43
8.1.30.0050.00317.52
8.1.20.0030.00617.64
8.1.10.0000.00817.42
8.1.00.0040.00417.51
8.0.300.0040.00420.09
8.0.290.0060.00316.75
8.0.280.0040.00418.43
8.0.270.0000.00717.25
8.0.260.0040.00418.35
8.0.250.0040.00416.91
8.0.240.0000.00716.91
8.0.230.0030.00316.89
8.0.220.0030.00316.79
8.0.210.0050.00216.73
8.0.200.0030.00316.89
8.0.190.0000.00816.88
8.0.180.0040.00416.74
8.0.170.0060.00316.72
8.0.160.0000.00716.74
8.0.150.0080.00016.65
8.0.140.0070.00016.77
8.0.130.0050.00013.33
8.0.120.0050.00216.69
8.0.110.0000.00716.81
8.0.100.0040.00416.72
8.0.90.0050.00216.82
8.0.80.0060.01116.72
8.0.70.0070.00016.88
8.0.60.0040.00416.82
8.0.50.0000.00816.72
8.0.30.0120.00816.93
8.0.20.0150.00617.26
8.0.10.0050.00216.72
8.0.00.0080.01016.61
7.4.330.0020.00215.55
7.4.320.0030.00316.36
7.4.300.0030.00316.54
7.4.290.0050.00216.27
7.4.280.0000.00816.52
7.4.270.0000.00716.44
7.4.260.0000.00716.54
7.4.250.0000.00716.47
7.4.240.0050.00216.43
7.4.230.0000.00716.27
7.4.220.0000.00816.37
7.4.210.0060.00916.43
7.4.200.0030.00316.62
7.4.160.0120.00916.45
7.4.130.0130.00316.32
7.4.120.0120.01316.45
7.4.110.0140.00316.43
7.4.100.0170.00016.52
7.4.90.0150.00316.45
7.4.80.0090.00819.39
7.4.70.0130.00316.48
7.4.60.0120.00616.47
7.4.50.0040.01516.49
7.4.40.0130.01016.31
7.4.00.0030.01014.90
7.3.330.0050.00012.96
7.3.320.0020.00212.99
7.3.310.0030.00316.22
7.3.300.0060.00016.18
7.3.290.0090.00516.13
7.3.280.0070.01116.16
7.3.260.0080.01116.31
7.3.230.0100.01316.32
7.3.210.0120.00616.38
7.3.200.0080.01416.35
7.3.190.0070.01116.37
7.3.180.0160.00016.30
7.3.170.0090.00716.31
7.3.160.0160.00016.46
7.3.60.0120.00314.62
7.3.50.0030.01014.79
7.3.40.0070.00414.61
7.3.30.0060.01214.58
7.3.20.0130.00514.77
7.3.10.0070.00714.48
7.3.00.0110.00314.58
7.2.330.0060.01016.27
7.2.320.0030.01316.46
7.2.310.0130.01016.32
7.2.300.0070.01016.59
7.2.290.0120.00316.38
7.2.190.0090.00315.00
7.2.180.0080.00814.61
7.2.170.0040.00714.79
7.2.160.0100.00714.88
7.2.150.0150.00014.93
7.2.140.0260.00714.96
7.2.130.0110.01114.80
7.2.120.1030.00714.95
7.2.110.0130.01314.63
7.2.100.0130.00714.72
7.2.90.0150.01514.78
7.2.80.0150.00314.81
7.2.70.0230.01214.64
7.2.60.0250.00614.97
7.2.50.0130.00314.73
7.2.40.0200.00814.63
7.2.30.0120.00614.66
7.2.20.0160.01014.84
7.2.10.0040.01214.88
7.2.00.0060.00914.73
7.1.300.0230.00313.44
7.1.290.0200.00713.82
7.1.280.0120.00913.54
7.1.270.0130.00613.68
7.1.260.0110.00313.93
7.1.250.0090.00913.77

preferences:
102.58 ms | 1468 KiB | 5 Q