3v4l.org

run code in 500+ PHP versions simultaneously
<?php $str = "😜House-3-BLUE]"; echo mb_substr($str,0,1).mb_strtolower(mb_substr($str,1,1)).mb_substr($str,2);

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)
8.5.90.0100.01016.86
8.5.80.0120.00616.72
8.5.70.0100.00816.85
8.5.60.0120.00516.46
8.5.50.0020.00518.19
8.5.30.0120.00819.66
8.5.20.0110.00619.51
8.5.10.0120.00616.47
8.5.00.0130.01019.77
8.4.240.0100.01119.46
8.4.230.0090.01119.43
8.4.220.0070.00219.54
8.4.210.0100.01019.50
8.4.180.0080.01220.62
8.4.170.0110.01120.40
8.4.160.0150.00723.94
8.4.150.0060.00516.81
8.4.140.0080.01317.41
8.4.130.0060.01018.72
8.4.120.0120.00724.21
8.4.110.0060.00418.70
8.4.100.0050.00417.65
8.4.90.0070.01517.86
8.4.80.0120.00717.68
8.4.70.0110.00919.53
8.4.60.0060.00218.71
8.4.50.0110.00819.48
8.4.40.0110.00817.30
8.4.30.0070.01322.63
8.4.20.0080.01120.57
8.4.10.0060.00619.55
8.3.320.0130.00518.24
8.3.310.0130.00918.35
8.3.300.0050.00420.73
8.3.290.0120.00822.67
8.3.280.0110.01218.43
8.3.270.0140.00616.50
8.3.260.0110.00916.60
8.3.250.0090.01018.75
8.3.240.0110.00616.88
8.3.230.0110.00916.73
8.3.220.0080.00917.05
8.3.210.0120.00716.80
8.3.200.0040.00516.60
8.3.190.0060.00217.41
8.3.180.0090.01016.60
8.3.170.0120.00616.63
8.3.160.0130.00616.70
8.3.150.0080.01117.41
8.3.140.0030.00520.92
8.3.130.0040.00418.53
8.3.120.0110.00820.78
8.3.110.0130.00320.94
8.3.100.0080.00018.21
8.3.90.0040.00426.77
8.3.80.0060.00319.36
8.3.70.0150.00018.55
8.3.60.0170.00718.30
8.3.50.0090.00918.24
8.3.40.0070.01118.68
8.3.30.0110.00418.43
8.3.20.0050.00320.74
8.3.10.0040.00421.96
8.3.00.0050.00223.61
8.2.320.0080.01318.01
8.2.310.0140.00618.24
8.2.300.0120.00822.19
8.2.290.0060.00520.55
8.2.280.0070.00318.23
8.2.270.0040.01416.78
8.2.260.0040.01118.81
8.2.250.0040.00416.58
8.2.240.0060.00316.92
8.2.230.0060.00322.58
8.2.220.0090.00924.06
8.2.210.0110.00326.77
8.2.200.0060.00318.88
8.2.190.0090.00916.58
8.2.180.0110.00425.92
8.2.170.0070.01118.64
8.2.160.0150.00020.52
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0040.00419.83
8.2.110.0110.00020.91
8.2.100.0090.00317.91
8.2.90.0050.00317.84
8.2.80.0050.00319.54
8.2.70.0040.00417.93
8.2.60.0030.00618.03
8.2.50.0060.00318.10
8.2.40.0040.00420.60
8.2.30.0000.00719.24
8.2.20.0070.00017.94
8.2.10.0000.00719.15
8.2.00.0030.00619.20
8.1.340.0110.00917.68
8.1.330.0100.00722.06
8.1.320.0120.00615.87
8.1.310.0110.00716.52
8.1.300.0040.01420.37
8.1.290.0040.00430.84
8.1.280.0100.00725.92
8.1.270.0090.00023.99
8.1.260.0080.00026.35
8.1.250.0000.00728.09
8.1.240.0000.00823.92
8.1.230.0040.00720.88
8.1.220.0040.00417.74
8.1.210.0000.00819.17
8.1.200.0060.00317.22
8.1.190.0050.00317.13
8.1.180.0000.00818.10
8.1.170.0000.00818.73
8.1.160.0040.00418.94
8.1.150.0040.00418.86
8.1.140.0000.00719.00
8.1.130.0040.00420.21
8.1.120.0050.00917.41
8.1.110.0030.00517.47
8.1.100.0000.00717.48
8.1.90.0030.00317.53
8.1.80.0030.00617.47
8.1.70.0050.00217.48
8.1.60.0060.00317.50
8.1.50.0070.00017.43
8.1.40.0040.00417.63
8.1.30.0060.00317.73
8.1.20.0030.00517.70
8.1.10.0040.00417.55
8.1.00.0040.00417.34
8.0.300.0000.00719.79
8.0.290.0040.00416.75
8.0.280.0000.00718.51
8.0.270.0000.00817.31
8.0.260.0000.00818.54
8.0.250.0030.00317.04
8.0.240.0070.00017.05
8.0.230.0070.00016.98
8.0.220.0030.00316.97
8.0.210.0000.00716.81
8.0.200.0030.00516.96
8.0.190.0000.00816.88
8.0.180.0000.00716.98
8.0.170.0000.00916.98
8.0.160.0080.00016.86
8.0.150.0020.00516.77
8.0.140.0040.00416.80
8.0.130.0060.00013.35
8.0.120.0030.00616.80
8.0.110.0040.00417.05
8.0.100.0000.00716.92
8.0.90.0050.00316.82
8.0.80.0030.01316.96
8.0.70.0000.00816.77
8.0.60.0040.00417.07
8.0.50.0000.00816.92
8.0.30.0100.00717.00
8.0.20.0140.01016.95
8.0.10.0030.00616.78
8.0.00.0100.00816.85
7.4.330.0050.00015.55
7.4.320.0000.00616.58
7.4.300.0040.00416.66
7.4.290.0030.00316.47
7.4.280.0040.00416.54
7.4.270.0030.00316.70
7.4.260.0070.00016.64
7.4.250.0070.00016.61
7.4.240.0020.00516.66
7.4.230.0070.00016.58
7.4.220.0000.00716.63
7.4.210.0070.00716.45
7.4.200.0000.00716.62
7.4.160.0120.00316.51
7.4.130.0140.00916.55
7.4.120.0120.00616.59
7.4.110.0070.01016.45
7.4.100.0160.00016.55
7.4.90.0030.01416.55
7.4.80.0120.01019.39
7.4.70.0070.01016.47
7.4.60.0070.01016.43
7.4.50.0070.00516.34
7.4.40.0130.01016.63
7.4.00.0060.01015.15
7.3.330.0020.00213.14
7.3.320.0000.00512.97
7.3.310.0030.00316.25
7.3.300.0030.00316.17
7.3.290.0100.01116.31
7.3.280.0120.00616.26
7.3.260.0100.00916.38
7.3.230.0180.01616.49
7.3.210.0090.01016.23
7.3.200.0100.00716.14
7.3.190.0110.00516.56
7.3.180.0070.01016.31
7.3.170.0090.01316.28
7.3.160.0070.01016.31
7.3.60.0030.01014.70
7.3.50.0110.00414.73
7.3.40.0110.01114.69
7.3.30.0110.00714.64
7.3.20.0090.00414.53
7.3.10.0220.00014.51
7.3.00.0100.00614.55
7.2.330.0140.00716.66
7.2.320.0060.01316.66
7.2.310.0090.00616.37
7.2.300.0040.01216.70
7.2.290.0060.01316.65
7.2.190.0130.00014.78
7.2.180.0130.01014.70
7.2.170.0090.00314.83
7.2.160.0080.00514.93
7.2.150.0030.01015.07
7.2.140.0070.00714.94
7.2.130.0220.00315.14
7.2.120.0070.00715.04
7.2.110.0090.00315.02
7.2.100.0050.00914.59
7.2.90.0070.00614.91
7.2.80.0090.00914.95
7.2.70.0090.00414.65
7.2.60.0090.00414.98
7.2.50.0160.01014.98
7.2.40.0180.00314.94
7.2.30.0090.00514.57
7.2.20.0110.00414.58
7.2.10.0100.00314.64
7.2.00.0090.00614.89
7.1.300.0120.00413.77
7.1.290.0070.00713.55
7.1.280.0090.00313.77
7.1.270.0040.00813.80
7.1.260.0090.00613.96
7.1.250.0030.00914.14

preferences:
100.18 ms | 1469 KiB | 5 Q