Reading text file

Question

We have a a supplier that each Monday sends a list of new Devices/Parts these are then manually entered into a database.

I'd like to use PHP to read this file and update the appropriate datebase records. The database I can do, but how do I read the data from the file ?

System:         Avro
Supplier:       ABC Inc

Quantity:       1
Device:             ICD
ID:           PA-658_ao8uY
For Clarity:  PA-658_AO8UY

Quantity:       10
Device:             PSTHG
ID:              tg675_0O09i8
For Clarity:  TG675_0O09I8

The above is an example of what we get. The System is us, the supplier is them. There can be hundreds for Quantity, device ID, and clarity lines in the file we receive.

How do I take the system / supplier names to variables, then loop through each of the Quantity, Device, ID and Clarity entries ???

Answer 1

For this simple task you don't need regular expressions, the following code will do it.

$content = file_get_contents("file.txt");
$content = str_replace(Array("\r\n", "\r"), "\n", $content); // we only want unix linebreaks

$data = explode("\n\n", $content);
foreach($data as &$section) {
  $lines = explode("\n", $section);
  $section = Array();
  foreach($lines as $line) {
    $colon = strpos($line, ":");
    $section[substr($line, 0, $colon)] = trim(substr($line, $colon + 1));
  }
}

print_r($data);

Sample Output Data:

Array
(
    [0] => Array
        (
            [System] => Avro
            [Supplier] => ABC Inc
        )

    [1] => Array
        (
            [Quantity] => 1
            [Device] => ICD
            [ID] => PA-658_ao8uY
            [For Clarity] => PA-658_AO8UY
        )

    [2] => Array
        (
            [Quantity] => 10
            [Device] => PSTHG
            [ID] => tg675_0O09i8
            [For Clarity] => TG675_0O09I8
        )

)

Answer 2

    $handle = fopen("your file ");
    //counter
    $i=0;
    $rowContentPrec=array();
    while (!feof($handle)) {
     $rowContent=explode(':',fread($handle, 8192));
     //get the system and provider
      if($i==0){      
          $sytem=$rowContent[1];
      }elseif($i==1){
          $provider=$rowContent[1];  
      }elseif(isset($rowContent)){ 
          //product
          $rowContent=explode(':',fread($handle, 8192));
          if($rowContentPrec[0]=='For Clarity'){
               //save your product to database here and initialize the    array with informations about one product
                $contentArr=array();
          }else{
            $contentArr[$rowContent[0]]=$rowContent[1];  
          } 
           $rowContentPrec=$rowContent;
          $i++; 
      }

    }
    fclose($handle);

Answer 3

If you can redefine the format of this file to something like this..

   [Core]
        System=Avro
        Supplier=ABC Inc

   [line1]   
        Quantity= 1
        Device=ICD
        ID=PA-658_ao8uY
        For Clarity=PA-658_AO8UY

   [line2]
        Quantity=10
        Device=PSTHG
        ID=tg675_0O09i8
        For Clarity:  TG675_0O09I8

You can use parse_ini_file(file,true,INI_SCANNER_NORMAL) can give you a multi-dimensional array of all the data.

This is one alternate highly subjective solution you can use. I'm just assuming the format is stable one, and will hold for long.

<?php

$newStock = new NewStockUpdate($itemListFile);

//do anything with $newStock Object




class NewStockUpdate
{

    private $System;
    private $Supplier;
    private $allUpdates;


    function __construct($listFile)
    {

    $fileHandle = fopen( $listFile, "r" ) or die("Couldn't open Update file $listFile");


    $lineSystem = explode(":",getLineData($fileHandle));
    $lineSupplier = explode(":",getLineData($fileHandle));

    $i=0;
        while(true)
        {

        $allUpdates[$i] = new ItemData($fileHandle);
        $i++;



        }

    }

    function getSystem()
    {
    return $this->System;
    }

    function getSupplier()
    {
    return $this->Supplier;
    }

    function getUpdateList()
    {
     return $this->allUpdates;
    }

}



class ItemData
{

public $Quantity;
public $Device;
public $ID;
public $ForClarity;

public $lastObject;

function __construct($filePointer)
{

    try
    {

    $lineQuantity = explode(":",getLineData($filePointer));
    $lineDevice = explode(":",getLineData($filePointer));
    $lineID = explode(":",getLineData($filePointer));
    $lineForClarity = explode(":",getLineData($filePointer));

    $this->Quantity = $lineQuantity[1];
    $this->Device = $lineDevice[1];
    $this->ID = $lineID[1];
    $this->ForClarity = $lineForClarity[1];

    }
    catch(Exception $e)
    {
     //log something
    }

    if(feof($filePointer))
    {

    $this->lastObject = true;

    }
    else
    {
    $this->lastObject=false;
    }

    function isLastRecord()
    {
        return $this->lastObject;
    }


}



}



function getLineData($filePointer)
{

while(!feof($filePointer))
{

$data = fgets($filePointer);
if(empty($data)|| $data=='\n')
{
$data = fgets($filePointer);
}
else
{
return $data;
}
}



}

?>

I think the rest you can manage with thie class object. Adding these entries to db and all. You can create multiple NewStock object for various Suppliers. Hopes this helps