3v4l.org

run code in 300+ PHP versions simultaneously
<?php $myVar = "original"; testFunc([$myVar]); echo "Variable value: $myVar <br>"; // Output is: "Variable value: original" testFunc([&$myVar]); echo "Variable value: $myVar <br>"; // Output is: "Variable value: changed" testFunc([&$undefinedVar]); echo "Variable value: $undefinedVar<br>"; // Output is: "Variable value: changed" @testFunc([$undefinedVar_2]); echo @"Variable value: $undefinedVar_2<br>"; // Output is: "Variable value: " function testFunc( array $arr ) : void { ob_start(); var_dump($arr); if(preg_match('#&(int|NULL|string)#',ob_get_clean())){ print 'is ref '; var_dump($arr); } if ( !is_array($arr) || count($arr) == 0 ) return; $arr[0] = 'changed'; }

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)
8.5.10.0120.01021.90
8.5.00.0110.01120.49
8.4.150.0020.00014.05
8.4.140.0140.00918.07
8.4.130.0140.00718.09
8.4.120.0080.00920.32
8.4.110.0150.00522.70
8.4.100.0150.00718.22
8.4.90.0070.00620.50
8.4.80.0120.00818.89
8.4.70.0090.01018.83
8.4.60.0070.00918.57
8.4.50.0100.01018.07
8.4.40.0030.01619.82
8.4.30.0120.00820.50
8.4.20.0080.00022.61
8.4.10.0100.00723.80
8.3.280.0110.01018.76
8.3.270.0140.00616.74
8.3.260.0100.00916.73
8.3.250.0050.00418.83
8.3.240.0030.00516.66
8.3.230.0100.00916.79
8.3.220.0100.00318.80
8.3.210.0070.01116.87
8.3.200.0060.00317.05
8.3.190.0070.01217.22
8.3.180.0100.00918.65
8.3.170.0120.00618.93
8.3.160.0070.00718.79
8.3.150.0100.01020.69
8.3.140.0160.00617.18
8.3.130.0050.00318.66
8.3.120.0100.01019.13
8.3.110.0080.00020.94
8.3.100.0000.00824.06
8.3.90.0110.00726.77
8.3.80.0060.00318.55
8.3.70.0090.00618.55
8.3.60.0110.00416.60
8.3.50.0110.01117.19
8.3.40.0100.00720.31
8.3.30.0120.00419.00
8.3.20.0030.00624.18
8.3.10.0040.00424.66
8.3.00.0000.00826.16
8.2.290.0120.00816.79
8.2.280.0110.01018.80
8.2.270.0120.00618.96
8.2.260.0130.00618.94
8.2.250.0090.00018.84
8.2.240.0000.01019.06
8.2.230.0000.00822.58
8.2.220.0060.00337.54
8.2.210.0090.00626.77
8.2.200.0060.00316.88
8.2.190.0110.00418.68
8.2.180.0160.00617.00
8.2.170.0120.00318.89
8.2.160.0100.00322.96
8.2.150.0040.00425.66
8.2.140.0090.00024.66
8.2.130.0080.00026.16
8.2.120.0040.00420.07
8.2.110.0070.00319.21
8.2.100.0060.00617.97
8.2.90.0070.00318.16
8.2.80.0050.00317.88
8.2.70.0000.00917.88
8.2.60.0000.00817.93
8.2.50.0060.00318.07
8.2.40.0080.00518.09
8.2.30.0040.00418.14
8.2.20.0000.00719.23
8.2.10.0130.00417.86
8.2.00.0150.00417.94
8.1.330.0130.00816.54
8.1.320.0110.00918.06
8.1.310.0040.01116.89
8.1.300.0030.00620.17
8.1.290.0000.00930.84
8.1.280.0070.00725.92
8.1.270.0050.00324.66
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0060.00322.59
8.1.230.0070.00420.91
8.1.220.0050.00317.74
8.1.210.0000.00819.04
8.1.200.0040.00417.34
8.1.190.0000.00917.47
8.1.180.0040.00421.95
8.1.170.0050.00318.75
8.1.160.0040.00418.87
8.1.150.0050.00218.87
8.1.140.0120.00517.50
8.1.130.0110.00517.60
8.1.120.0080.00817.62
8.1.110.0160.00017.67
8.1.100.0050.01117.69
8.1.90.0130.00517.59
8.1.80.0100.00717.72
8.1.70.0190.00017.66
8.1.60.0130.01017.72
8.1.50.0220.00017.73
8.1.40.0130.00717.70
8.1.30.0180.00417.80
8.1.20.0220.00017.80
8.1.10.0150.00417.66
8.1.00.0180.00317.73
8.0.300.0040.00419.88
8.0.290.0090.00017.00
8.0.280.0040.00418.45
8.0.270.0160.00017.02
8.0.260.0030.00817.04
8.0.250.0000.00717.10
8.0.240.0040.00417.04
8.0.230.0040.00717.09
8.0.220.0130.00216.99
8.0.210.0050.00316.98
8.0.200.0080.00617.06
8.0.190.0070.00317.08
8.0.180.0060.00617.10
8.0.170.0030.00717.10
8.0.160.0050.00617.06
8.0.150.0070.00417.12
8.0.140.0050.00516.97
8.0.130.0040.00817.02
8.0.120.0110.00017.02
8.0.110.0090.00017.03
8.0.100.0100.00016.93
8.0.90.0060.00616.89
8.0.80.0200.00017.03
8.0.70.0210.00017.06
8.0.60.0100.00317.02
8.0.50.0080.00417.00
8.0.30.0000.01116.88
8.0.20.0050.01017.09
8.0.10.0100.00317.08

preferences:
125.79 ms | 403 KiB | 5 Q