Pathinfo vs fnmatch

Question

There was a little discussion about fnmatch speed via pathinfo: how to check if a php file is?

I was not completely convinced, so I decided to compare the two functions.

Using dynamic and static paths showed that pathinfo was faster.

Is my comparison logic and conclusion valid?

EDIT : using mac php from cmd

PHP 5.3.0 (cli) (built: July 20, 2009 13:56:33) Copyright (c) 1997-2009 PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2009 Zend Technologies

pathinfo dynamic path 3.2973630428314 fnmatch 3.4520659446716 x1.05

static pathinfo path 0.86487698554993 fnmatch 1.0420439243317 x1.2

mac xampp php from cmd

PHP 5.3.1 (cli) (built: February 27, 2010 12:41:51) Copyright (c) 1997-2009 PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2009 Zend Technologies

pathinfo dynamic path 3.63922715187 fnmatch 4.99041700363 x1.37

static pathinfo path 1.03110480309 fnmatch 2.38929820061 x2.32

I include a sample of results, which are in seconds for 100,000 iterations on my machine:

dynamic path pathinfo 3.79311800003 fnmatch 5.10071492195 x1.34 static path pathinfo 1.03921294212 fnmatch 2.37709188461 x2.29 

the code:

 <pre> <?php $iterations=100000; // Benchmark with dynamic file path print("dynamic path\n"); $i=$iterations; $t1=microtime(true); while($i-->0){ $f='/'.uniqid().'/'.uniqid().'/'.uniqid().'/'.uniqid().'.php'; if(pathinfo($f,PATHINFO_EXTENSION)=='php') $d=uniqid(); } $t2=microtime(true) - $t1; print("pathinfo $t2\n"); $i=$iterations; $t1=microtime(true); while($i-->0){ $f='/'.uniqid().'/'.uniqid().'/'.uniqid().'/'.uniqid().'.php'; if(fnmatch('*.php',$f)) $d=uniqid(); } $t3 = microtime(true) - $t1; print("fnmatch $t3\n"); print('x'.round($t3/$t2,2)."\n\n"); // Benchmark with static file path print("static path\n"); $f='/'.uniqid().'/'.uniqid().'/'.uniqid().'/'.uniqid().'.php'; $i=$iterations; $t1=microtime(true); while($i-->0) if(pathinfo($f,PATHINFO_EXTENSION)=='php') $d=uniqid(); $t2=microtime(true) - $t1; print("pathinfo $t2\n"); $i=$iterations; $t1=microtime(true); while($i-->0) if(fnmatch('*.php',$f)) $d=uniqid(); $t3=microtime(true) - $t1; print("fnmatch $t3\n"); print('x'.round($t3/$t2,2)."\n\n"); ?> </pre> 

Answer 1

I supported all the answers, but I will answer my own question.

My comparison logic and output are valid and all test tests are valid.

I found the reason why another question arose, but instead of leaving this post tangent and doing it even longer, I will open another question. I will put a new link here when I do this.

Thanks for benchmarking for me!

EDIT: here is the question of the second part: (Pathinfo vs fnmatch part 2). Speed ​​test changed on Windows and Mac

Answer 2

My results are the opposite of yours:

 php -f 2693428.php dynamic path pathinfo 4.5834331512451 fnmatch 3.2174317836761 x0.7 static path pathinfo 2.1787130832672 fnmatch 0.95714497566223 x0.44 

Version

 PHP 5.3.0 (cli) (built: Jun 29 2009 21:25:23) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2009 Zend Technologies 

Answer 3

Launch using

 PHP 5.3.2 (cgi-fcgi) (built: Mar 3 2010 20:47:00) Copyright (c) 1997-2010 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies with Zend Debugger v5.3, Copyright (c) 1999-2010, by Zend Technologies 

gives

 dynamic path pathinfo 3.4931519031525 fnmatch 2.8633069992065 x0.82 static path pathinfo 0.83261299133301 fnmatch 0.28636598587036 x0.34 

These four

 function hasExtension1($ext, $filename) { return !strcasecmp(pathinfo($filename, PATHINFO_EXTENSION), $ext); } function hasExtension2($ext, $filename) { return fnmatch("*.$ext", $filename, FNM_CASEFOLD); } function hasExtension3($ext, $filename) { return strripos($filename, $ext) === strlen($filename) - strlen($ext); } function hasExtension4($ext, $filename) { return !strcasecmp(substr($filename, -strlen($ext)), $ext); } 

at startup like

 for($i=0;$i<10000;$i++) hasExtension1('php', __FILE__); for($i=0;$i<10000;$i++) hasExtension2('php', __FILE__); for($i=0;$i<10000;$i++) hasExtension3('php', __FILE__); for($i=0;$i<10000;$i++) hasExtension4('php', __FILE__); 

and profiled on my machine from Zend Studio gives

 Average Mean Time = 0.000007 Average Mean Time = 0.000006 Average Mean Time = 0.000005 Average Mean Time = 0.000003 

It seems to me that this is somewhat annoying, that there is no 4 faster, but this is what he says. And with 0.00000n seconds per call, this is nothing to worry about anyway.

Answer 4

Using the same benchmarking code

 dynamic path pathinfo 2.6542711257935 fnmatch 1.9943950176239 x0.75 static path pathinfo 1.1711349487305 fnmatch 0.54186105728149 x0.46 PHP Version 5.3.1 Build Date Nov 20 2009 17:20:57 Compiler MSVC6 (Visual C++ 6.0) Architecture x86 Thread Safety enabled Zend Memory Manager enabled Zend Multibyte Support disabled 

Answer 5

I will give my results here:

 dynamic path pathinfo 4.9078891277313 fnmatch 4.3466200828552 x0.89 static path pathinfo 1.4787950515747 fnmatch 0.98351812362671 x0.67 

But keep in mind my initial comment on the question you related to:

As for speed, fnmatch will exit to execute pathinfo 2: 1 when used for this purpose.

Specifically for branching on a particular extension.