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general.php

Go to the documentation of this file.

<?php
############################################################################
#    Copyright (C) 2004 by Paolo Armani & Stefano Menegon                  #
#    paolo.armani@gmail.com   menegon@itc.it                               #
#                                                                          #
#    This program is free software; you can redistribute it and#or modify  #
#    it under the terms of the GNU Library General Public License as       #
#    published by the Free Software Foundation; either version 2 of the    #
#    License, or (at your option) any later version.                       #
#                                                                          #
#    This program is distributed in the hope that it will be useful,       #
#    but WITHOUT ANY WARRANTY; without even the implied warranty of        #
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         #
#    GNU General Public License for more details.                          #
#                                                                          #
#    You should have received a copy of the GNU Library General Public     #
#    License along with this program; if not, write to the                 #
#    Free Software Foundation, Inc.,                                       #
#    59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             #
############################################################################


function array_to_hash($arr1,$arr2){
  $resArr=array();  
  if(is_array($arr2) && is_array($arr1)){
    $num=min(count($arr1),count($arr2));
    reset($arr1);
    reset($arr2);
    for($i=0; $i<$num; $i++){
      $resArr[current($arr1)]=current($arr2);
      next($arr1);       
      next($arr2);       
    }
  }    
  return $resArr;
}


function transpose($arr){  
  $arr1=array();
  if(is_array($arr)){
    foreach($arr as $key=>$val){
      if(is_array($val)){
        foreach($val as $key1=>$val1){
          $arr1[$key1][$key]=$val1;
        };
      };
    }
  };
  return $arr1;  
}

// date functions                                                             //



function isodate($datearr){
 if(is_array($datearr)  && $datearr['month']>0 && $datearr['day'] >0 && $datearr['year'] >0 ){
  $isodate=$datearr['year'].'-'.$datearr['month'].'-'.$datearr['day'];
 }else{
  $isodate='';
 }
 return $isodate;
}


function is_date($datearr){
 return checkdate($datearr['month'],$datearr['day'],$datearr['year']);
}



function isotime($timearr){
 if(is_array($timearr) && $timearr['hour']!='' && $timearr['minute']!=''){
  $isotime=$timearr['hour'].':'.$timearr['minute'];
 }else{
  $isotime='';
 }
 return $isotime;
}



 function df($date="",$fmt=false){
  if($date){
   global $SQL_DATE_FMT;
   $date_fmts=Array("ymd","mdy","dmy");
   if(!in_array($SQL_DATE_FMT,$date_fmts)) $SQL_DATE_FMT="ymd";
   list(
    ${substr($SQL_DATE_FMT,0,1)},
    ${substr($SQL_DATE_FMT,1,1)},
    ${substr($SQL_DATE_FMT,2,1)}
   )=split('-',$date);
  }
  $tmp=$date?mktime(0,0,0,$m,$d,$y):time();
  $save=setlocale(LC_TIME,"it_IT");
  $fmtdate=strftime($fmt?$fmt:"%x",$tmp);
  setlocale(LC_TIME,$save);
  return $fmtdate;
 }


 function o_iftrue ($fmt,$str){
   if($str!=""){ return(sprintf($fmt,$str)); }
 } 

// exif                                                                       //



function clean_exif(&$arr){
    if (!is_array($arr)){
        //$arr=preg_replace('/\x0/','',$arr);
        //the fallows line it is not necessary, but clean from bad visive character, if commented the previous one is necessary to prevent db errors
        $arr=preg_replace('/[^ -\~]+/','',$arr);
    }
    else{
        foreach($arr as $key=>$val){
            clean_exif($arr[$key]);
        };
    };
};



function exif_to_array($exif){
  if($exif){
    $chars = preg_split("/(^\')|(\'\=>\')|(\'\n\')|(\'\n$)/", $exif);
    array_shift($chars);
    array_pop($chars);
    
    $num=count($chars);
    $i=0;
    while($i<$num){
      $arr_exif[$chars[$i]][$chars[$i+1]]=$chars[$i+2];
      $i=$i+3;
    };
  };  
  return $arr_exif;
};


function array_to_exif($exif_array){
  $exif='';
  if($exif_array){
    foreach($exif_array as $key=>$section) {
      foreach($section as $name=>$val) {
        $exif.="'".addslashes($key)."'=>'".addslashes($name)."'=>'".addslashes($val)."'\n";
      };
    };
  };
  return $exif;
}

//to avoid php segmentation fault if a variable not exist
function secure_unset($name){
  if(isset($name)){
    unset($name);
    return true;
  }
  else return false;
}

//to remove keys from an existent array
function array_unset(&$array, $keys){
  if(!is_array($keys))$keys=array($keys);
  $new=array();
  
  if(!is_array($array)) return;
  foreach($array as $key=>$val){
    if(!in_array($key, $keys)){
      $new[$key]=&$array[$key];
    } 
  }
  $array=$new;
}

function getmicrotime(){ 
  list($usec, $sec) = explode(" ",microtime()); 
  return ((float)$usec + (float)$sec); 
} 

?>

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