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
8.3.50.0070.01016.65
8.3.40.0140.00719.17
8.3.30.0070.01018.83
8.3.20.0000.00821.89
8.3.10.0040.00421.92
8.3.00.0030.00522.40
8.2.180.0160.00018.54
8.2.170.0180.00322.96
8.2.160.0110.00422.31
8.2.150.0000.00924.18
8.2.140.0050.00324.66
8.2.130.0050.00326.16
8.2.120.0080.00026.16
8.2.110.0070.00320.55
8.2.100.0090.00318.09
8.2.90.0040.00418.18
8.2.80.0000.00818.00
8.2.70.0030.00718.05
8.2.60.0040.00418.47
8.2.50.0050.00318.10
8.2.40.0080.00019.59
8.2.30.0000.00819.28
8.2.20.0040.00418.21
8.2.10.0030.00319.41
8.2.00.0040.00419.38
8.1.280.0070.01125.92
8.1.270.0050.00320.81
8.1.260.0080.00026.35
8.1.250.0050.00328.09
8.1.240.0070.00324.02
8.1.230.0040.00819.16
8.1.220.0040.00417.91
8.1.210.0080.00018.77
8.1.200.0040.00717.73
8.1.190.0050.00317.60
8.1.180.0000.00918.10
8.1.170.0000.00818.91
8.1.160.0060.00318.89
8.1.150.0030.00618.98
8.1.140.0030.00617.59
8.1.130.0070.00020.20
8.1.120.0050.00317.73
8.1.110.0000.00917.64
8.1.100.0050.00317.63
8.1.90.0030.00517.57
8.1.80.0050.00317.66
8.1.70.0000.00817.64
8.1.60.0060.00317.75
8.1.50.0060.00617.61
8.1.40.0060.00317.69
8.1.30.0040.00417.94
8.1.20.0000.00817.76
8.1.10.0050.00317.80
8.1.00.0070.00317.77
8.0.300.0000.00821.75
8.0.290.0060.00316.85
8.0.280.0040.00418.55
8.0.270.0030.00317.10
8.0.260.0040.00422.02
8.0.250.0040.00417.26
8.0.240.0000.00717.21
8.0.230.0000.00817.21
8.0.220.0030.00317.22
8.0.210.0000.00717.17
8.0.200.0040.00417.25
8.0.190.0060.00317.21
8.0.180.0000.00817.19
8.0.170.0030.00617.01
8.0.160.0070.00017.20
8.0.150.0000.00817.07
8.0.140.0080.00017.16
8.0.130.0070.00013.57
8.0.120.0060.00317.14
8.0.110.0000.00817.09
8.0.100.0080.00017.19
8.0.90.0000.00817.20
8.0.80.0060.01417.19
8.0.70.0040.00417.09
8.0.60.0000.00917.00
8.0.50.0080.00017.20
8.0.30.0120.00317.45
8.0.20.0140.00617.60
8.0.10.0000.00817.28
8.0.00.0130.00617.07
7.4.330.0050.00016.81
7.4.320.0030.00316.76
7.4.300.0000.00616.85
7.4.290.0000.00816.82
7.4.280.0070.00016.81
7.4.270.0080.00016.87
7.4.260.0080.00013.43
7.4.250.0040.00416.74
7.4.240.0000.00716.88
7.4.230.0040.00416.77
7.4.220.0000.00716.92
7.4.210.0070.01016.88
7.4.200.0070.00016.73
7.4.130.0160.00316.57
7.4.120.0110.00716.90
7.4.110.0120.00816.75
7.4.100.0120.01216.86
7.4.90.0080.01216.79
7.4.80.0090.00919.39
7.4.70.0100.00716.77
7.4.60.0180.00616.92
7.4.50.0080.00316.55
7.4.40.0030.01416.73
7.4.00.0130.00715.03
7.3.330.0040.00416.04
7.3.320.0030.00313.24
7.3.310.0030.00316.24
7.3.300.0000.00616.20
7.3.290.0040.01016.17
7.3.260.0100.01116.31
7.3.240.0110.00816.20
7.3.230.0090.00916.30
7.3.210.0060.01016.36
7.3.200.0100.00716.12
7.3.190.0100.00716.29
7.3.180.0070.01016.14
7.3.170.0110.01216.42
7.3.160.0110.00616.36
7.3.120.0070.00714.80
7.3.110.0100.00714.15
7.3.100.0070.01114.63
7.3.90.0090.00514.62
7.3.80.0060.01014.46
7.3.70.0020.01414.53
7.3.60.0060.00714.59
7.3.50.0060.00714.51
7.3.40.0080.00514.64
7.3.30.0090.00514.50
7.3.20.0090.00715.31
7.3.10.0050.01115.40
7.3.00.0060.00715.43
7.2.330.0150.00316.10
7.2.320.0070.01416.13
7.2.310.0070.01016.38
7.2.300.0060.01016.50
7.2.290.0100.00716.58
7.2.250.0040.01114.78
7.2.240.0020.01414.46
7.2.230.0070.00714.79
7.2.220.0050.01014.65
7.2.210.0100.00614.67
7.2.200.0090.00714.60
7.2.190.0090.00614.75
7.2.180.0050.01014.74
7.2.170.0050.01114.52
7.2.160.0040.00914.81
7.2.150.0060.01115.61
7.2.140.0060.00815.79
7.2.130.0070.00915.48
7.2.120.0040.01315.56
7.2.110.0070.01215.55
7.2.100.0100.00615.69
7.2.90.0070.00615.74
7.2.80.0080.00915.66
7.2.70.0120.01215.56
7.2.60.0080.01015.63
7.2.50.0040.01015.80
7.2.40.0090.00615.59
7.2.30.0100.00715.60
7.2.20.0050.00815.73
7.2.10.0050.00715.65
7.2.00.0100.00515.56
7.1.330.0060.01015.55
7.1.320.0080.00614.49
7.1.310.0080.00314.73
7.1.300.0080.00414.48
7.1.290.0050.00914.55
7.1.280.0090.00714.63
7.1.270.0040.01114.50
7.1.260.0090.00414.52
7.1.250.0060.00614.42
7.1.240.0120.00315.43
7.1.230.0150.00315.52
7.1.220.0060.01215.62
7.1.210.0130.00015.42
7.1.200.0040.01115.27
7.1.190.0070.00415.30
7.1.180.0130.00015.45
7.1.170.0030.00615.55
7.1.160.0030.00615.45
7.1.150.0040.00815.53
7.1.140.0060.00615.52
7.1.130.0060.00315.38
7.1.120.0080.00815.47
7.1.110.0030.01315.60
7.1.100.0040.01115.38
7.1.90.0030.01015.68
7.1.80.0070.00315.36
7.1.70.0000.00915.64
7.1.60.0060.01015.30
7.1.50.0070.00715.21
7.1.40.0040.00815.40
7.1.30.0030.00615.37
7.1.20.0040.01115.38
7.1.10.0000.01315.31
7.1.00.0070.00315.68

preferences:
59.92 ms | 401 KiB | 5 Q