Echo array key with its relevant data

[foucquet]

I have an array ( $exifdata ) which contains the relevant bits that I require, read from exif data, as in the var_dump below.

 

array

  0 => string 'Caption' (length=7)

  1 => string 'Copy' (length=4)

  2 => string 'Camera' (length=6)

  3 => string 'Shutter' (length=7)

  4 => string 'fNo' (length=3)

  5 => string 'ISO' (length=3)

  6 => string 'Date' (length=4)

  7 => string 'Time' (length=4)

  'copy' => string 'Alf Thomas' (length=10)

  'caption' => string 'Blue Sky over Auld Reekie' (length=25)

  'camera' => string 'Canon PowerShot G9' (length=18)

  'shutter' => string '1/800' (length=5)

  'fNo' => string 'f/5.6' (length=5)

  'iso' => int 200

  'date' => string '07:10:2011' (length=10)

  'time' => string '09:05:26' (length=8

 

What I am trying to do is echo each key followed by its relevant data, and thought something like this would work:-

 

foreach( $exifdata as $key => $value){
echo "$key :, $value <br />";
}

 

The output I get from the above is as below:-

 

0 :, Caption

1 :, Copy

2 :, Camera

3 :, Shutter

4 :, fNo

5 :, ISO

6 :, Date

7 :, Time

copy :, Foucquet

caption :, Blue Sky over Auld Reekie

camera :, Canon PowerShot G9

shutter :, 1/800

fNo :, f/5.6

iso :, 200

date :, 07:10:2011

time :, 09:05:26

 

Which more or less does what I want except that what I actually would like is this:-

 

Copy - Foucquet

Caption - Blue Sky over Auld Reekie

Camera - Canon PowerShot G9

Shutter - 1/800

fNo - f/5.6

ISO - 200

Date - 07:10:2011

Time - 09:05:26

 

What I can't quite understand is why I am getting the two lists as an output, which simply seems to be identical to the output of the var_dump.

[Buddski]

Your array has 8 numeric keys and 8 associative keys.

You are getting that output because your array contains all of those 16 elements (as the var_dump states)

 

Will your array always contain these 16 elements?

[foucquet]

I see that now that you point it out, what it should be is an associative array with no numerical keys at all, I have obviously done something stupid here:-

 

$exifdata = array('Caption', 'Copy', 'Camera', 'Shutter', 'fNo', 'ISO', 'Date', 'Time');

//>> Populate $exifdata
if (array_key_exists('Copyright', $exif)) {
    $exifdata['copy'] = $exif['Copyright'];
}
else {
  $exifdata['copy'] = "Foucquet";
}

$exifdata['caption'] = $exif['COMMENT'][0];
$exifdata['camera'] = $exif['Model'];
$exifdata['shutter'] = $exif['ExposureTime'];
$exifdata['fNo'] = $exif['COMPUTED']['ApertureFNumber'];
$exifdata['iso'] = $exif['ISOSpeedRatings'];
$exifdata['date'] = $date;
$exifdata['time'] = $time;

 

but am not quite sure what at this point - any ideas?

[Buddski]

This line

$exifdata = array('Caption', 'Copy', 'Camera', 'Shutter', 'fNo', 'ISO', 'Date', 'Time');

is creating the numerical keys with those values assigned. With the rest of your code in place you can just replace that line with

$exifdata = array();

[foucquet]

I just knew I had done summat stupid - so bleeding obvious!

 

Thanks Buddski