3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = "string"; $y = "$x"; $z = "".$y."";

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)
8.3.60.0070.00716.38
8.3.50.0150.00418.21
8.3.40.0110.00718.76
8.3.30.0110.00818.55
8.3.20.0040.00420.41
8.3.10.0060.00323.51
8.3.00.0050.00222.40
8.2.180.0090.00618.18
8.2.170.0070.00722.96
8.2.160.0040.01122.17
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00421.05
8.2.110.0030.00622.16
8.2.100.0060.00617.78
8.2.90.0030.00517.59
8.2.80.0040.00418.88
8.2.70.0040.00417.50
8.2.60.0050.00317.50
8.2.50.0040.00417.63
8.2.40.0000.00817.75
8.2.30.0080.00019.22
8.2.20.0050.00218.05
8.2.10.0000.00719.35
8.2.00.0040.00418.20
8.1.280.0140.00325.92
8.1.270.0030.00520.23
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0040.00422.41
8.1.230.0070.00420.91
8.1.220.0040.00417.78
8.1.210.0090.00018.78
8.1.200.0060.00317.23
8.1.190.0030.00617.23
8.1.180.0000.00918.10
8.1.170.0000.00717.62
8.1.160.0040.00818.80
8.1.150.0000.00718.87
8.1.140.0000.00720.12
8.1.130.0030.00320.31
8.1.120.0050.00217.38
8.1.110.0030.00417.31
8.1.100.0000.00717.45
8.1.90.0000.00717.42
8.1.80.0000.00717.38
8.1.70.0000.00817.48
8.1.60.0000.00817.62
8.1.50.0040.00417.51
8.1.40.0030.00617.50
8.1.30.0030.00617.60
8.1.20.0060.00317.68
8.1.10.0030.00517.47
8.1.00.0040.00417.45
8.0.300.0000.00720.08
8.0.290.0070.00016.75
8.0.280.0030.00318.43
8.0.270.0040.00416.86
8.0.260.0060.00019.93
8.0.250.0000.00716.96
8.0.240.0000.00816.94
8.0.230.0030.00516.88
8.0.220.0050.00316.90
8.0.210.0040.00416.92
8.0.200.0040.00416.93
8.0.190.0050.00316.90
8.0.180.0000.00716.91
8.0.170.0050.00316.86
8.0.160.0070.00016.93
8.0.150.0000.00716.87
8.0.140.0040.00416.72
8.0.130.0040.00413.30
8.0.120.0000.00716.86
8.0.110.0030.00516.67
8.0.100.0000.00716.74
8.0.90.0050.00316.80
8.0.80.0050.01216.81
8.0.70.0000.00816.90
8.0.60.0050.00216.85
8.0.50.0080.00016.61
8.0.30.0100.00916.83
8.0.20.0090.00916.95
8.0.10.0080.00016.76
8.0.00.0120.00616.79
7.4.330.0020.00215.55
7.4.320.0000.00616.58
7.4.300.0000.00716.64
7.4.290.0030.00316.38
7.4.280.0050.00316.45
7.4.270.0000.00716.54
7.4.260.0030.00616.47
7.4.250.0030.00316.54
7.4.240.0070.00016.45
7.4.230.0000.00716.38
7.4.220.0000.00816.54
7.4.210.0080.00816.53
7.4.200.0070.00016.70
7.4.160.0060.00916.49
7.4.140.0080.01117.86
7.4.130.0090.01016.50
7.4.120.0090.00916.52
7.4.110.0060.01016.47
7.4.100.0150.00616.42
7.4.90.0030.01416.46
7.4.80.0070.01119.39
7.4.70.0130.00316.33
7.4.60.0100.00616.49
7.4.50.0040.01116.41
7.4.40.0130.00316.59
7.4.00.0070.00815.05
7.3.330.0030.00313.10
7.3.320.0060.00013.10
7.3.310.0000.00616.09
7.3.300.0050.00216.27
7.3.290.0050.01316.28
7.3.280.0130.00616.23
7.3.260.0120.00616.37
7.3.230.0100.00616.20
7.3.210.0100.00616.57
7.3.200.0030.01316.53
7.3.190.0130.00616.55
7.3.180.0060.01216.45
7.3.170.0100.00616.34
7.3.160.0150.00616.43
7.3.120.0130.00714.68
7.3.110.0070.01014.99
7.3.100.0090.00914.56
7.3.90.0100.00714.85
7.3.80.0040.01214.98
7.3.70.0070.01014.72
7.3.60.0050.00814.74
7.3.50.0030.01014.79
7.3.40.0120.00314.79
7.3.30.0050.01014.74
7.3.20.0330.01015.64
7.3.10.0290.00815.62
7.3.00.0310.00615.73
7.2.330.0150.00416.58
7.2.320.0160.00016.34
7.2.310.0080.00816.71
7.2.300.0070.01416.69
7.2.290.0080.00816.36
7.2.250.0120.00314.96
7.2.240.0060.01214.89
7.2.230.0060.00914.58
7.2.220.0080.00414.79
7.2.210.0030.01314.72
7.2.200.0080.00614.85
7.2.190.0000.01414.77
7.2.180.0040.01214.93
7.2.170.0040.00814.78
7.2.160.0080.00314.84
7.2.150.0480.00714.90
7.2.140.0640.00615.07
7.2.130.0580.00614.74
7.2.120.0440.01015.00
7.2.110.0400.01214.98
7.2.100.1270.00714.97
7.2.90.0660.00314.82
7.2.80.0650.00714.88
7.2.70.0570.00715.00
7.2.60.0610.00714.69
7.2.50.0490.00714.76
7.2.40.0480.00615.04
7.2.30.0570.00015.03
7.2.20.0540.00714.86
7.2.10.0520.01014.80
7.2.00.0500.00314.99
7.1.330.0060.00615.63
7.1.320.0040.00715.71
7.1.310.0090.00615.59
7.1.300.0060.00615.34
7.1.290.0060.00315.63
7.1.280.0030.00715.74
7.1.270.0330.00714.66
7.1.260.0240.01014.78
7.1.250.0470.00713.51

preferences:
62.76 ms | 400 KiB | 5 Q