does PHP have a multi dimensional array? And how?

[biglee]

Hi guys,
Does php have a multi dimensional array?

So eg. $someData[j]

Thanks,
BigLee

[mtmosier]

Yes

[thorpe]

yes, and it is exactly how you think.

<?php

$foo = array(array('bar','boo','bob','betty'));

?>

[biglee]

cool, thanks guys.
Its just that my function isn't working and i needed to know if it was caused by my multi array or by another error. So i guess it must be another error then.

[thorpe]

guess so...

[Vbabiy]

Post the code.

[biglee]

well theres way too much code, but the nuts&bolts are similar to this:

I pull in a file: myData.txt

Which contains data like this:

| 25 16 | 1.8 1 | 1.8 7.8 108 | | | | | |
| 25 17 | 1.7 1 | 1.7 7.8 108 | | | | | |
| 25 18 | 1.7 1 | 1.7 7.7 109 | | | | | |
| 25 19 | 1.6 1 | 1.6 7.7 109 | | | | | |
| 25 20 | 1.6 1 | 1.6 7.7 109 |

then to target each value between the pipes

i do something like

---

$hi = file("myData.txt");
print_r(explode('|', $hi[$i][$j], -1));

basically i want to be able to read out, something like (based on example data above)

Array[1] => 25 16
Array[2] => 18.1
Array[3] => 1.8 7.8 108
Array[4] => 25.17
Array[5] => 1.7.1
etc.....

like i said i havent got it working yet. I sometimes just get the print "array", sometimes just a helluva loop ( i think it then puts each character as the value, instead of the total between the pipes)etc.

Sorry that i cant put up all the code but its too biiiiiiiiiiiiiiiiiiiiiiiig

Thanks,
BigLee

[leatherback]

Hi,

I am thinking along this line, there is probably a more effective way though:

$fcontents = file( $cfile );
$lines = sizeof($fcontents);

while ($i < $lines)
  {
  $data[$j] = explode('|', $fcontents[$i]);
  }

  foreach($data as $key => $value)
    {
    foreach($value as $key2 => $value2)
      {
      echo "$value2
      ";
      }
    }

[edit]

I forgot: Came from a script I used in a database management tool. For you to see how I use multi-dim. arrays:

     for($x=0; $x<12; $x++)
       {
       $header .= $fcontents[$x] . "<br>";
       }

  $i = 12;
  $j = 0;
  while ($i < $lines)
   {
    $fcontents[$i] = ereg_replace(" {2,}", " ", $fcontents[$i]);
    $datatmp[$j] = explode(' ', $fcontents[$i]);
    $data[$j][0] = 100*$datatmp[$j][0];                             // Wave
    $data[$j][1] = $datatmp[$j][2];                                 // reference
    $data[$j][2] = $datatmp[$j][1];                                 // radiance
    $data[$j][3] = round(100*100*$datatmp[$j][1] / $datatmp[$j][2]);      // reflectance
    //echo $data[$i][0];
    $i++;
    $j++;
   }
 $data[0][4] = $header;
 break;    

[biglee]

bedankt ;-) groeten uit londen

I'll try your code and i'll let you know how i get on. I should have it implemented in about 3 hours or so. Thanks for your code.

[biglee]

ahm well i tried it

but get the error that:

file() expects parameter 1 to be string, array given in /home/... :queasy:

[biglee]

actually, if someone could help, the easiest way to solve this problem is to strip the returns at the end of each line. So making it one big array. How do you do that?
Thanks

[biglee]

Hi guys,
just an update. I got it to work.

So imagine a file mydata.txt with the content like

| 25 16 | 1.8 1 | 1.8 7.8 108 | | | | | |
| 25 17 | 1.7 1 | 1.7 7.8 108 | | | | | |

<?php
//download the file, put into a variable
$data = file_get_contents('http://www.mysite.com/mydata.txt);

// put contents of variable into an array
$newData = array($data);

// need to do "for" loop for this "explode" to work
// although there is only one line
$oneLine = "2";
$countVariable = "0";

for($i = 0; $i < $oneLine; $i++)
{
// explode using | symbol as delimiter
$newArray = explode('|', $newData[$i], -1);

		// go thru array and read out each value
				foreach ($newArray as $itsValue)
					{
						// give each value an id number
						$countVariable = $countVariable + 1;

						// print em all out
						echo $countVariable."'s value is".$itsValue."\n<br>";
			}
	}

?>

It will return:

1's value is
2's value is 25 16
3's value is 1.8 1
4's value is 1.8 7.8 108
5's value is
6's value is
7's value is
8's value is
9's value is
10's value is
11's value is 25 17

so hope this helps if you're trying to do something similar.