3v4l.org

run code in 300+ PHP versions simultaneously
<?php function evalRPN($input) { $_GET['a']=$input; $v=$_GET['a']; while(preg_match('~(.*?)(-?[\d.]+) +(-?[\d.]+) +([*/+-])(.*)~',$v,$m)) $v=$m[1].($m[4]=="+"?$m[2]+$m[3]:($m[4]=="-"?$m[2]-$m[3]:($m[4]=="*"?$m[2]*$m[3]:$m[2]/$m[3]))).$m[5]; return $v; } function evalRPN2($input) { $_GET['a']=$input; $v=$_GET['a']; do{$v=preg_replace_callback( '~(-?[\d.]+) +(-?[\d.]+) +([*/+-])~', fn($m)=>($m[3]=="+"?$m[1]+$m[2]:($m[3]=="-"?$m[1]-$m[2]:($m[3]=="*"?$m[1]*$m[2]:$m[1]/$m[2]))), $v,9,$c );}while($c); return $v; } function evalRPN3($input) { $_GET['a']=$input; foreach(preg_split('~ +~', $_GET['a'])as$v) if(floatval($v))$s[]=$v;else{[$e,$d]=array_splice($s, -2);$s[]=$v=="+"?$e+$d:($v=="-"?$e-$d:($v=="*"?$e*$d:$e/$d));} return $s[0]; } echo evalRPN('-4 5 +') , "\n"; // output 1 echo evalRPN('5 2 /') , "\n"; // output 2.5 echo evalRPN('5 2.5 /') , "\n"; // output 2 echo evalRPN('5 1 2 + 4 * 3 - +') , "\n"; // output 14 echo evalRPN('4 2 5 * + 1 3 2 * + /') , "\n"; // output 2 echo evalRPN2('-4 5 +') , "\n"; // output 1 echo evalRPN2('5 2 /') , "\n"; // output 2.5 echo evalRPN2('5 2.5 /') , "\n"; // output 2 echo evalRPN2('5 1 2 + 4 * 3 - +') , "\n"; // output 14 echo evalRPN2('4 2 5 * + 1 3 2 * + /') , "\n"; // output 2 echo evalRPN3('-4 5 +') , "\n"; // output 1 echo evalRPN3('5 2 /') , "\n"; // output 2.5 echo evalRPN3('5 2.5 /') , "\n"; // output 2 echo evalRPN3('5 1 2 + 4 * 3 - +') , "\n"; // output 14 echo evalRPN3('4 2 5 * + 1 3 2 * + /') , "\n"; // output 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)
8.3.60.0130.00716.75
8.3.50.0140.00416.61
8.3.40.0070.00719.27
8.3.30.0080.01519.23
8.3.20.0050.00321.80
8.3.10.0080.00022.09
8.3.00.0080.00022.27
8.2.180.0110.00418.28
8.2.170.0150.00622.96
8.2.160.0060.00922.32
8.2.150.0090.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0120.00321.03
8.2.110.0070.00321.31
8.2.100.0000.01318.22
8.2.90.0040.00418.16
8.2.80.0030.00519.41
8.2.70.0040.00418.16
8.2.60.0000.00918.28
8.2.50.0030.00618.10
8.2.40.0040.00419.18
8.2.30.0000.00819.31
8.2.20.0040.00418.20
8.2.10.0000.00719.37
8.2.00.0040.00419.40
8.1.280.0090.00625.92
8.1.270.0040.00420.80
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00322.20
8.1.230.0060.00621.16
8.1.220.0060.00317.77
8.1.210.0030.00618.97
8.1.200.0030.00717.60
8.1.190.0030.00617.60
8.1.180.0050.00318.10
8.1.170.0040.00418.79
8.1.160.0070.00019.11
8.1.150.0000.00718.94
8.1.140.0040.00421.03
8.1.130.0040.00420.19
8.1.120.0000.00717.66
8.1.110.0000.00817.70
8.1.100.0040.00417.60
8.1.90.0070.00017.72
8.1.80.0040.00417.66
8.1.70.0000.00817.66
8.1.60.0050.00317.84
8.1.50.0070.00317.58
8.1.40.0040.00417.63
8.1.30.0060.00317.91
8.1.20.0040.00417.79
8.1.10.0030.00517.78
8.1.00.0030.00817.59
8.0.300.0040.00420.24
8.0.290.0060.00317.00
8.0.280.0030.01018.54
8.0.270.0030.00317.35
8.0.260.0070.00022.00
8.0.250.0000.00717.18
8.0.240.0090.00017.14
8.0.230.0030.00517.24
8.0.220.0030.00317.18
8.0.210.0070.00017.21
8.0.200.0040.00417.19
8.0.190.0040.00417.29
8.0.180.0040.00417.10
8.0.170.0080.00317.21
8.0.160.0040.00417.21
8.0.150.0000.00717.15
8.0.140.0000.00717.04
8.0.130.0030.00313.59
8.0.120.0000.00817.18
8.0.110.0000.00817.09
8.0.100.0060.00316.96
8.0.90.0040.00416.98
8.0.80.0110.00717.08
8.0.70.0000.00816.97
8.0.60.0000.00817.07
8.0.50.0000.00717.11
8.0.30.0100.01017.39
8.0.20.0090.00917.42
8.0.10.0000.00717.15
8.0.00.0130.00916.87
7.4.330.0050.00016.82
7.4.320.0000.00616.89
7.4.300.0060.00016.87
7.4.290.0000.00816.87
7.4.280.0060.00316.75
7.4.270.0040.00416.82
7.4.260.0050.00213.51
7.4.250.0030.00516.84
7.4.240.0000.00716.81
7.4.230.0070.00016.83
7.4.220.0070.00016.69
7.4.210.0040.01116.79
7.4.200.0040.00416.81
7.4.130.0170.00716.75
7.4.120.0110.00716.80
7.4.110.0130.01316.68
7.4.100.0070.01316.62
7.4.90.0090.00916.85
7.4.80.0030.01519.39
7.4.70.0080.00816.88
7.4.60.0150.00816.62
7.4.50.0100.00716.82
7.4.40.0110.00716.45
7.3.330.0070.00016.00
7.3.320.0000.00513.21
7.3.310.0000.00916.11
7.3.300.0000.00716.11
7.3.290.0020.01216.16
7.3.260.0120.00916.25
7.3.240.0100.00816.19
7.3.230.0060.01016.28
7.3.210.0070.01016.32
7.3.200.0120.00616.38
7.3.190.0100.00616.23
7.3.180.0100.01016.11
7.3.170.0100.01016.16
7.3.160.0070.01016.29
7.3.90.0070.00714.54
7.3.80.0090.01014.59
7.3.70.0060.00914.64
7.3.60.0070.01314.66
7.3.50.0080.00814.72
7.3.40.0050.00814.55
7.3.30.0090.00614.45
7.3.20.0120.00314.49
7.3.10.0040.01114.78
7.3.00.0030.01314.52
7.2.330.0070.01016.39
7.2.320.0060.01716.52
7.2.310.0060.00916.43
7.2.300.0090.00616.20
7.2.290.0090.00616.39
7.2.220.0030.01014.69
7.2.210.0070.01114.46
7.2.200.0030.01214.70
7.2.190.0130.00714.91
7.2.180.0080.00514.38
7.2.170.0060.00814.78
7.2.160.0060.00914.58
7.2.150.0090.00614.63
7.2.140.0100.00714.85
7.2.130.0060.01214.69
7.2.120.0120.00614.67
7.2.110.0090.00914.86
7.2.100.0090.00614.95
7.2.90.0040.01114.92
7.2.80.0070.00714.66
7.2.70.0060.01014.84
7.2.60.0130.00314.73
7.2.50.0110.00414.56
7.2.40.0130.00714.79
7.2.30.0110.00714.73
7.2.20.0180.00014.89
7.2.10.0030.01014.84
7.2.00.0180.00014.92
7.1.320.0060.01113.78
7.1.310.0070.00713.79
7.1.300.0070.00713.65
7.1.290.0090.00613.60
7.1.280.0110.00213.66
7.1.270.0070.00713.76
7.1.260.0100.00313.80
7.1.250.0100.01113.59

preferences:
65.15 ms | 400 KiB | 5 Q