3v4l.org

run code in 300+ PHP versions simultaneously
<?php $num = 1234; $first = preg_split("//", $num)[0]; var_dump($first);

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)
8.3.60.0110.00718.55
8.3.50.0110.01118.48
8.3.40.0110.00419.01
8.3.30.0150.00318.84
8.3.20.0070.00720.29
8.3.10.0080.00022.10
8.3.00.0110.00723.31
8.2.180.0150.00616.75
8.2.170.0150.00022.96
8.2.160.0190.00020.52
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0050.00322.23
8.2.120.0050.00226.35
8.2.110.0070.01022.32
8.2.100.0070.00418.03
8.2.90.0030.00619.17
8.2.80.0030.00517.97
8.2.70.0060.00317.50
8.2.60.0000.00818.04
8.2.50.0040.00418.10
8.2.40.0040.00420.62
8.2.30.0040.00419.29
8.2.20.0030.00517.98
8.2.10.0000.00817.98
8.2.00.0000.00718.05
8.1.280.0110.01125.92
8.1.270.0130.00620.54
8.1.260.0110.00726.35
8.1.250.0080.00028.09
8.1.240.0070.00723.96
8.1.230.0110.00020.45
8.1.220.0050.00317.78
8.1.210.0000.00818.77
8.1.200.0100.00017.35
8.1.190.0040.00417.23
8.1.180.0050.00518.10
8.1.170.0030.00618.63
8.1.160.0070.00018.81
8.1.150.0070.00020.03
8.1.140.0040.00417.70
8.1.130.0000.00718.95
8.1.120.0030.00417.49
8.1.110.0000.00817.49
8.1.100.0000.00717.56
8.1.90.0080.00417.45
8.1.80.0030.00617.43
8.1.70.0030.00317.45
8.1.60.0080.00017.67
8.1.50.0030.00617.66
8.1.40.0000.00817.59
8.1.30.0000.00817.78
8.1.20.0000.00817.67
8.1.10.0030.00617.56
8.1.00.0060.00317.57
8.0.300.0040.00418.77
8.0.290.0040.00416.88
8.0.280.0030.00318.46
8.0.270.0040.00417.17
8.0.260.0100.00018.46
8.0.250.0000.00717.09
8.0.240.0030.00317.10
8.0.230.0070.00316.96
8.0.220.0030.00317.03
8.0.210.0040.00417.01
8.0.200.0030.00316.96
8.0.190.0000.00917.13
8.0.180.0000.00816.92
8.0.170.0030.00617.03
8.0.160.0000.00716.98
8.0.150.0060.00316.99
8.0.140.0080.00016.93
8.0.130.0080.00013.41
8.0.120.0030.00516.88
8.0.110.0000.00717.02
8.0.100.0040.00417.01
8.0.90.0030.00616.88
8.0.80.0100.00716.98
8.0.70.0040.00416.86
8.0.60.0000.00716.94
8.0.50.0070.00017.09
8.0.30.0070.01317.18
8.0.20.0130.00617.43
8.0.10.0020.00517.09
8.0.00.0110.00616.90
7.4.330.0020.00215.55
7.4.320.0000.00716.68
7.4.300.0060.00016.78
7.4.290.0030.00516.55
7.4.280.0030.00316.78
7.4.270.0030.00316.71
7.4.260.0060.00016.70
7.4.250.0000.00816.66
7.4.240.0030.00316.67
7.4.230.0030.00316.44
7.4.220.0070.01016.56
7.4.210.0110.00416.59
7.4.200.0000.00716.64
7.4.160.0050.01216.66
7.4.150.0070.01017.40
7.4.140.0100.00917.86
7.4.130.0100.00716.74
7.4.120.0120.00616.68
7.4.110.0080.00816.73
7.4.100.0090.00916.46
7.4.90.0120.00616.70
7.4.80.0070.01119.39
7.4.70.0100.01316.61
7.4.60.0070.01416.65
7.4.50.0110.00316.55
7.4.40.0070.01016.45
7.4.30.0060.01416.73
7.4.00.0100.00615.16
7.3.330.0000.00513.28
7.3.320.0050.00013.32
7.3.310.0070.00016.22
7.3.300.0030.00516.39
7.3.290.0030.01116.38
7.3.280.0080.00816.41
7.3.270.0110.00717.40
7.3.260.0080.01016.50
7.3.250.0090.00816.46
7.3.240.0090.01016.44
7.3.230.0110.00616.35
7.3.210.0110.00616.79
7.3.200.0090.00716.57
7.3.190.0120.00416.79
7.3.180.0150.00016.32
7.3.170.0030.01316.38
7.3.160.0130.00316.45
7.3.10.0090.00616.67
7.3.00.0110.00416.66
7.2.330.0120.00616.84
7.2.320.0150.00616.81
7.2.310.0080.00816.82
7.2.300.0140.00516.58
7.2.290.0060.01016.45
7.2.130.0030.01016.94
7.2.120.0000.01417.07
7.2.110.0050.00716.85
7.2.100.0060.01016.92
7.2.90.0100.00717.07
7.2.80.0040.01517.18
7.2.70.0100.00616.73
7.2.60.0030.00817.11
7.2.50.0060.00616.86
7.2.40.0100.00717.01
7.2.30.0040.00716.92
7.2.20.0070.01017.03
7.2.10.0070.01017.04
7.2.00.0040.01417.10
7.1.250.0070.00715.81
7.1.200.0070.00715.72
7.1.100.0080.01616.17
7.1.90.0160.00915.92
7.1.80.0060.01516.25
7.1.70.0170.00715.58
7.1.60.0300.01333.63
7.1.50.0200.01733.31
7.1.40.0410.01332.88
7.1.30.5730.01032.91
7.1.21.0270.01033.10
7.1.10.8410.00715.18
7.1.00.6740.01315.14
7.0.240.0240.01015.83
7.0.230.0170.01016.12
7.0.220.0160.00516.00
7.0.210.0130.01314.85
7.0.200.0100.01015.14
7.0.190.0080.01115.03
7.0.180.0100.00714.45
7.0.170.8650.00714.62
7.0.161.3120.01314.53
7.0.150.7810.00714.64
7.0.140.5180.01014.81
7.0.130.7390.00014.73
7.0.120.3810.01014.86
7.0.110.0230.00614.72
7.0.100.0300.01014.55
7.0.90.9000.01314.56
7.0.80.8780.00914.57
7.0.70.7390.01314.53
7.0.60.3000.01014.37
7.0.50.0120.01214.83
7.0.40.0210.01714.87
7.0.30.0090.01614.94
7.0.20.0060.01314.75
7.0.10.4490.01314.88
7.0.00.9070.01714.88

preferences:
64.35 ms | 400 KiB | 5 Q