Difference between revisions of "PHP"

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== server level ==
[[Category:Programming-Languages]]
* The eAccelerator and XCache PHP performance extensions are known to cause issues. If you're using either of those and are having problems, please disable them while you do your import. Add the following lines:
<syntaxhighlight lang="php" >
  php_value eaccelerator.enable 0
  php_value xcache.cacher off
  php_value xcache.optimizer off
</syntaxhighlight>


 
== Language ==
== lenguage level ==


=== Syntax ===
=== Syntax ===
Line 56: Line 49:
=== functions ===
=== functions ===


  * chmod($file,"0664");
* change file permissions
<syntaxhighlight lang="php" >
  chmod($file,"0664");
</syntaxhighlight>
* sleep seconds
<syntaxhighlight lang="php" >
sleep( 2 ); //sleep 2 seconds
</syntaxhighlight>
* sleep nanoseconds
<syntaxhighlight lang="php" >
time_nanosleep(0, 200000000); //sleep 0.2 seconds
</syntaxhighlight>


=== My algorithms ===
=== My algorithms ===
Line 62: Line 66:
==== Cleaning strings for links ====
==== Cleaning strings for links ====
  Funzione per ripulire i titoli degli articoli da mettere nelle url
  Funzione per ripulire i titoli degli articoli da mettere nelle url
<syntaxhighlight lang="php" >
/* reference dictionary  */
   «  »  ò  ó  á  à  è  é  ù  ú  ì  í  ñ  ·  ç  :  .  ,  !  “  ”  '  '  €  &  '  @  %  $  ?
   «  »  ò  ó  á  à  è  é  ù  ú  ì  í  ñ  ·  ç  :  .  ,  !  “  ”  '  '  €  &  '  @  %  $  ?
  171,187,242,243,225,224,232,233,249,250,236,237,241,183,231,58,46,44,33,145,146,147,148,128,38,39,64,37,36,63         
  171,187,242,243,225,224,232,233,249,250,236,237,241,183,231,58,46,44,33,145,146,147,148,128,38,39,64,37,36,63         
<syntaxhighlight lang="php" >
 
  function UrlizzaTit( $titoloUTF ) {
  function UrlizzaTit( $titoloUTF ) {
  //    Caratteri o stringhe da rimpiazzare col segno +
  //    Caratteri o stringhe da rimpiazzare col segno +
Line 126: Line 132:
   
   
  return $urlizzato;
  return $urlizzato;
}
</syntaxhighlight>
</syntaxhighlight>
}


=== Others algorithms ===
=== Others algorithms ===
Line 133: Line 139:
[http://www.pgregg.com/projects/php/preg_find/preg_find.php.txt preg_find.php]
[http://www.pgregg.com/projects/php/preg_find/preg_find.php.txt preg_find.php]
====simple glob() type replacement:====
====simple glob() type replacement:====
<syntaxhighlight lang="php" >
  $files = preg_find('/./', $dir);
  $files = preg_find('/./', $dir);
</syntaxhighlight>
====recursive?====
====recursive?====
<syntaxhighlight lang="php" >
  $files = preg_find('/./', $dir, PREG_FIND_RECURSIVE);
  $files = preg_find('/./', $dir, PREG_FIND_RECURSIVE);
</syntaxhighlight>
====pattern match? find all .php files:====
====pattern match? find all .php files:====
<syntaxhighlight lang="php" >
   $files = preg_find('/\.php$/D', $dir, PREG_FIND_RECURSIVE);   
   $files = preg_find('/\.php$/D', $dir, PREG_FIND_RECURSIVE);   
</syntaxhighlight>
====sorted alphabetically? ====
====sorted alphabetically? ====
<syntaxhighlight lang="php" >
   $files = preg_find('/\.php$/D', $dir, PREG_FIND_RECURSIVE|PREG_FIND_SORTKEYS);   
   $files = preg_find('/\.php$/D', $dir, PREG_FIND_RECURSIVE|PREG_FIND_SORTKEYS);   
</syntaxhighlight>
====sorted in by filesize, in descending order?====
====sorted in by filesize, in descending order?====
<syntaxhighlight lang="php" >
  $files = preg_find('/./', $dir,
  $files = preg_find('/./', $dir,
   PREG_FIND_RECURSIVE|PREG_FIND_RETURNASSOC |PREG_FIND_SORTFILESIZE|PREG_FIND_SORTDESC);
   PREG_FIND_RECURSIVE|PREG_FIND_RETURNASSOC |PREG_FIND_SORTFILESIZE|PREG_FIND_SORTDESC);
  $files=array_keys($files);
  $files=array_keys($files);
</syntaxhighlight>
====sorted by date modified?====
====sorted by date modified?====
<syntaxhighlight lang="php" >
  $files = preg_find('/./', $dir,
  $files = preg_find('/./', $dir,
   PREG_FIND_RECURSIVE|PREG_FIND_RETURNASSOC |PREG_FIND_SORTMODIFIED);
   PREG_FIND_RECURSIVE|PREG_FIND_RETURNASSOC |PREG_FIND_SORTMODIFIED);
  $files=array_keys($files);
  $files=array_keys($files);
</syntaxhighlight>
====parse command line argument to _GET array====
<syntaxhighlight lang="php" >
parse_str(implode('&', array_slice($argv, 1)), $_GET);
</syntaxhighlight>
== Server  ==
=== XCache ===
* The eAccelerator and XCache PHP performance extensions are known to cause issues. If you're using either of those and are having problems, please disable them while you do your import. Add the following lines:
* install '''(debina)'''
apt-get install php5-xcache
apt-get purge php-apc
vi /etc/php5/conf.d/xcache.ini
/etc/init.d/apache2 restart
<syntaxhighlight lang="php" >
  php_value eaccelerator.enable 0
  php_value xcache.cacher off
  php_value xcache.optimizer off
</syntaxhighlight>
* using xcache instead
<syntaxhighlight lang="php">
[xcache.admin]
xcache.admin.enable_auth = Off
; Configure this to use admin pages
xcache.admin.user = ""
; xcache.admin.pass = "md5staffofhashfashdffsdfdfsfd"
</syntaxhighlight>
<syntaxhighlight lang="php"  >
xcache.size  =                64M
xcache.var_size  =            64M
</syntaxhighlight>
<syntaxhighlight lang="php" >
xcache.cacher =              On
xcache.stat  =              On
xcache.optimizer =            On
xcache.coverager =          Off
</syntaxhighlight>
* admin gui :
cp -r /usr/sharexcache/admin/ /var/www/localhost/htdocs
http://domain/XCacheAdmin/
/etc/init.d/apache2 restart
=== various ===
* ''"A PHP debugging and profiling extension"''
xdebug

Latest revision as of 22:15, 10 February 2022


Language

Syntax

if

 if ( ( $A != "null" ) && (( $A === "true" ) || ( $A == "true" ) || ( $A <= 12 ) ) ) {
   /* code code code */
 }
 else 
 {
   /* code code code */
 }
  • abbreviation (as in C):
 (something) ? (if true do this) : (else do this)

for / foreach

switch

 switch ($something) {
    case 0:
        echo "something is 0";
        break;
    case "hello":
        echo "something is $something";
        break;
 }

Strings

  • joining strings:
 $string1 . "string 2" . $_GLOBAL['string3'];

Array

  • basic
 Array("one", "two", "3" );
  • with index:
 Array( 1 => "one", 2 => "two", 3 => "3" );
  • 2 dimensions

functions

  • change file permissions
 chmod($file,"0664");
  • sleep seconds
 sleep( 2 ); //sleep 2 seconds
  • sleep nanoseconds
 time_nanosleep(0, 200000000); //sleep 0.2 seconds

My algorithms

Cleaning strings for links

Funzione per ripulire i titoli degli articoli da mettere nelle url

/* reference dictionary  */
  «   »   ò   ó   á   à   è   é   ù   ú   ì   í   ñ   ·   ç  :  .  ,  !   “   ”   '   '   €  &  '  @  %  $  ?
 171,187,242,243,225,224,232,233,249,250,236,237,241,183,231,58,46,44,33,145,146,147,148,128,38,39,64,37,36,63         

 function UrlizzaTit( $titoloUTF ) {
 		//     Caratteri o stringhe da rimpiazzare col segno +
 	$toPlus = array(
 			chr(32),
 			chr(145),
 			chr(146),
 			chr(37),
 			chr(123),
 			chr(125),
 			chr(39),
 			chr(64),
 			chr(33),
 			chr(36),
 			chr(63),
 			";",
 			"[", 
 			"]",
 			"(",
 			")",
 			"\n",
 			"-"
 			);
 	
 		//     Caratteri o stringhe da cancellare    
 
 	$toNull = array(
 			"Il ",
 			"Lo ",
 			"lo ",
 			"da ",
 			" I ",
 			" i ",
 			" l' ",
 			chr(147),
 			chr(148),
 			chr(171),
 			chr(187),
 			chr(58),
 			chr(44),
 			chr(46)
 			);  
 
 	$urlizzato1 = 	str_replace(chr(231),"c", 
 			str_replace(chr(249),"u",
 			str_replace(chr(250),"u",
 			str_replace(chr(242),"o", 
 			str_replace(chr(243),"o", 
 			str_replace(chr(225),"a",
 			str_replace(chr(224),"a",
 			str_replace(chr(232),"e",
 			str_replace(chr(233),"e",
 			str_replace(chr(128),"euro+eur",
 			str_replace(chr(236),"i",
 			str_replace(chr(237),"i",
 			str_replace(chr(241),"n",
 			str_replace(chr(38),"and", $titoloUTF ))))))))))))));   
 
 	$urlizzato2 = str_replace( $toNull, ""   , $urlizzato1 ); 
 	$urlizzato  = str_replace( $toPlus, "+"  , $urlizzato2 );  
 
 	return $urlizzato;
 }

Others algorithms

Qube @ Efnet preg_find.php

simple glob() type replacement:

 $files = preg_find('/./', $dir);

recursive?

 $files = preg_find('/./', $dir, PREG_FIND_RECURSIVE);

pattern match? find all .php files:

  $files = preg_find('/\.php$/D', $dir, PREG_FIND_RECURSIVE);

sorted alphabetically?

  $files = preg_find('/\.php$/D', $dir, PREG_FIND_RECURSIVE|PREG_FIND_SORTKEYS);

sorted in by filesize, in descending order?

 $files = preg_find('/./', $dir,
  PREG_FIND_RECURSIVE|PREG_FIND_RETURNASSOC |PREG_FIND_SORTFILESIZE|PREG_FIND_SORTDESC);
 $files=array_keys($files);

sorted by date modified?

 $files = preg_find('/./', $dir,
  PREG_FIND_RECURSIVE|PREG_FIND_RETURNASSOC |PREG_FIND_SORTMODIFIED);
 $files=array_keys($files);

parse command line argument to _GET array

parse_str(implode('&', array_slice($argv, 1)), $_GET);

Server

XCache

  • The eAccelerator and XCache PHP performance extensions are known to cause issues. If you're using either of those and are having problems, please disable them while you do your import. Add the following lines:
  • install (debina)
apt-get install php5-xcache
apt-get purge php-apc
vi /etc/php5/conf.d/xcache.ini
/etc/init.d/apache2 restart

  php_value eaccelerator.enable 0
  php_value xcache.cacher off
  php_value xcache.optimizer off
  • using xcache instead
[xcache.admin]
xcache.admin.enable_auth = Off
; Configure this to use admin pages
xcache.admin.user = ""
; xcache.admin.pass = "md5staffofhashfashdffsdfdfsfd"

xcache.size  =                64M
xcache.var_size  =            64M

xcache.cacher =               On
xcache.stat   =               On
xcache.optimizer =            On
xcache.coverager =          Off
  • admin gui :
cp -r /usr/sharexcache/admin/ /var/www/localhost/htdocs
http://domain/XCacheAdmin/
/etc/init.d/apache2 restart

various

  • "A PHP debugging and profiling extension"
xdebug
Retrieved from "https://wiki.alessandro.delgallo.net//index.php?title=PHP&oldid=6357"