3v4l.org

run code in 300+ PHP versions simultaneously
<?php $camelCase = "USADollarSymbol"; echo strtolower( preg_replace( ["/([A-Z]+)/", "/_([A-Z]+)([A-Z][a-z])/"], ["_$1", "_$1_$2"], lcfirst($camelCase) ) );

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)
8.3.60.0150.00018.18
8.3.50.0080.00918.30
8.3.40.0150.00018.92
8.3.30.0070.00718.64
8.3.20.0050.00321.96
8.3.10.0030.00619.18
8.3.00.0000.00721.90
8.2.180.0060.00925.92
8.2.170.0040.01122.96
8.2.160.0030.01020.57
8.2.150.0050.00225.66
8.2.140.0090.00024.66
8.2.130.0070.00026.16
8.2.120.0040.00426.16
8.2.110.0030.00619.39
8.2.100.0060.00618.22
8.2.90.0040.00418.34
8.2.80.0000.00818.00
8.2.70.0090.00018.03
8.2.60.0040.00418.03
8.2.50.0000.00818.10
8.2.40.0040.00419.52
8.2.30.0050.00320.50
8.2.20.0080.00017.95
8.2.10.0030.00518.95
8.2.00.0000.00817.98
8.1.280.0040.01125.92
8.1.270.0090.00022.18
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0000.01019.26
8.1.230.0070.00420.88
8.1.220.0080.00017.74
8.1.210.0030.00518.77
8.1.200.0050.00317.35
8.1.190.0040.00417.23
8.1.180.0060.00318.10
8.1.170.0000.00818.54
8.1.160.0050.00218.83
8.1.150.0050.00318.84
8.1.140.0000.00718.84
8.1.130.0000.00720.13
8.1.120.0040.00417.58
8.1.110.0060.00317.54
8.1.100.0000.00817.55
8.1.90.0040.00417.43
8.1.80.0080.00017.43
8.1.70.0040.00417.43
8.1.60.0000.00917.59
8.1.50.0000.00717.50
8.1.40.0030.00617.60
8.1.30.0050.00317.68
8.1.20.0040.00417.63
8.1.10.0040.00417.68
8.1.00.0030.00617.60
8.0.300.0050.00219.77
8.0.290.0060.00316.75
8.0.280.0030.00318.38
8.0.270.0070.00017.20
8.0.260.0040.00418.50
8.0.250.0000.00817.09
8.0.240.0040.00417.11
8.0.230.0100.00016.98
8.0.220.0000.00716.96
8.0.210.0040.00417.03
8.0.200.0040.00416.98
8.0.190.0000.00816.96
8.0.180.0000.00816.89
8.0.170.0080.00016.96
8.0.160.0000.00817.05
8.0.150.0000.00716.91
8.0.140.0030.00316.91
8.0.130.0000.00513.45
8.0.120.0000.00716.95
8.0.110.0040.00417.02
8.0.100.0000.00817.03
8.0.90.0040.00416.92
8.0.80.0100.01017.02
8.0.70.0000.00816.83
8.0.60.0000.00816.93
8.0.50.0040.00416.87
8.0.30.0070.01217.31
8.0.20.0090.00917.02
8.0.10.0000.00816.98
8.0.00.0150.00416.84
7.4.330.0040.00015.55
7.4.320.0030.00316.59
7.4.300.0000.00616.77
7.4.290.0030.00616.75
7.4.280.0060.00616.71
7.4.270.0050.00216.66
7.4.260.0070.00016.68
7.4.250.0030.00316.65
7.4.240.0000.00816.76
7.4.230.0000.00716.72
7.4.220.0030.00516.53
7.4.210.0100.00916.70
7.4.200.0040.00416.80
7.4.160.0100.00816.61
7.4.140.0130.00317.86
7.4.130.0090.00916.54
7.4.120.0090.00916.45
7.4.110.0030.01716.83
7.4.100.0060.01216.41
7.4.90.0070.01116.62
7.4.80.0070.01019.39
7.4.70.0090.01216.52
7.4.60.0090.01416.87
7.4.50.0070.00216.73
7.4.40.0040.01416.64
7.4.00.0070.01215.02
7.3.330.0000.00513.02
7.3.320.0060.00013.13
7.3.310.0030.00316.23
7.3.300.0040.00416.18
7.3.290.0070.00016.27
7.3.280.0070.01216.24
7.3.260.0120.00616.64
7.3.240.0070.01116.38
7.3.230.0070.01016.29
7.3.210.0100.00716.66
7.3.200.0070.01016.30
7.3.190.0090.01316.55
7.3.180.0100.00716.45
7.3.170.0120.00316.68
7.3.160.0040.01216.17
7.3.120.0070.01314.67
7.3.110.0040.01414.66
7.3.100.0000.01514.34
7.3.90.0150.00014.86
7.3.80.0030.01314.77
7.3.70.0070.00715.08
7.3.60.0060.00614.63
7.3.50.0090.00514.73
7.3.40.0070.00614.96
7.3.30.0050.01014.68
7.3.20.0090.00316.82
7.3.10.0060.00516.49
7.3.00.0050.01016.79
7.2.330.0070.01016.53
7.2.320.0080.01916.71
7.2.310.0030.01416.66
7.2.300.0080.00816.60
7.2.290.0140.00316.65
7.2.250.0110.00714.96
7.2.240.0130.00615.02
7.2.230.0100.00715.02
7.2.220.0110.00315.04
7.2.210.0090.00615.07
7.2.200.0070.00715.07
7.2.190.0030.00714.79
7.2.180.0060.00814.98
7.2.170.0120.00814.97
7.2.160.0030.00714.95
7.2.150.0170.00717.00
7.2.140.0130.00016.94
7.2.130.0090.01217.04
7.2.120.0040.00817.04
7.2.110.0140.00716.73
7.2.100.0060.00617.05
7.2.90.0040.00816.91
7.2.80.0120.00916.87
7.2.70.0120.00616.95
7.2.60.0080.01416.81
7.2.50.0100.00317.10
7.2.40.0120.01217.01
7.2.30.0090.01217.00
7.2.20.0070.00716.80
7.2.10.0070.00416.89
7.2.00.0000.01116.96
7.1.330.0070.00415.91
7.1.320.0030.00715.77
7.1.310.0150.00415.83
7.1.300.0090.00315.71
7.1.290.0100.00715.70
7.1.280.0080.00615.66
7.1.270.0030.00615.92
7.1.260.0060.00515.78
7.1.250.0030.00615.77

preferences:
55.3 ms | 401 KiB | 5 Q