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Thread: For Loop :: PHP

  1. #1
    Join Date
    Apr 2009
    Location
    Petersburg, NY
    Posts
    60

    resolved For Loop :: PHP

    can any1 pls generalize this in for loop,


    10,20,40
    80,20,40
    150,20,40

    10,50,40
    80,50,40
    150,50,40

    10,80,40
    80,80,40
    150,80,40

    10,110,40
    80,110,40
    150,110,40

    10,140,40
    80,140,40
    150,140,40

  2. #2
    Join Date
    Sep 2011
    Location
    Bristol, England, United Kingdom
    Posts
    192
    So what's your question?

  3. #3
    Join Date
    Apr 2009
    Location
    Petersburg, NY
    Posts
    60
    Actually i need to print the barcode image in the above specified location. I Have already saved the barcode images.
    (eg..) The output should be as like

    * * *


    * * *


    * * *


    * * *


    Note: Where * is the barcode image



    So I need to loop these values to print in the following position

  4. #4
    Join Date
    Sep 2011
    Location
    Bristol, England, United Kingdom
    Posts
    192


    More details, more code samples. We're not mind readers around here.

  5. #5
    Join Date
    Jun 2006
    Location
    Under your bed
    Posts
    357
    I don't have any idea what s/he's talking about either.
    The better I get at programming, the more I appreciate arrays. Handy dandy things they are.

  6. #6
    Join Date
    Mar 2007
    Location
    Canada
    Posts
    99
    There you go. This is the first group of numbers.

    PHP Code:
    my $arr = array(10,20,40
                    
    80,20,40
                    150
    ,20,40
    );

    foreach (
    $arr as $num) {
        
    // do something with $num


  7. #7
    Join Date
    Aug 2013
    Posts
    30
    which barcode printer you used ?

  8. #8
    Join Date
    Mar 2012
    Posts
    3,964
    Quote Originally Posted by nithi_30 View Post
    Actually i need to print the barcode image in the above specified location. I Have already saved the barcode images.
    (eg..) The output should be as like

    * * *


    * * *


    * * *


    * * *


    Note: Where * is the barcode image



    So I need to loop these values to print in the following position
    So if I get you right, you want to print barcode images that are already saved. They are to be printed three abreast in a pre-defined sequence. That seems easy
    enough, but first I have to make some assumptions:

    1. The images are saved as GIF files (lossless).

    2. The images are named to match the barcode they contain: E.g. barcode "10" is stored as "10.gif".

    3. The barcode sequence:

    10,20,40

    generates the code:

    <img src="10.gif" alt="">
    <img src="20.gif" alt="">
    <img src="40.gif" alt="">

    4. The barcodes are to be output in blocks of 9 (3 x 3).

    Ok so far? If so, all we need to do is:

    5. Store the required sequence in an array, then generate the corresponding output. Something like:

    Code:
    <!DOCTYPE HTML>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Table array test</title>
    <style>
    tr {
    height:50px;
    }
    td {
    width:50px;
    }
    </style>
    </head>
    <body>
    <?php
    $barcodes= array(
    10,20,40,
    80,20,40,
    150,20,40,
    
    10,50,40,
    80,50,40,
    150,50,40,
    
    10,80,40,
    80,80,40,
    150,80,40,
    
    10,110,40,
    80,110,40,
    150,110,40,
    
    10,140,40,
    80,140,40,
    150,140,40);
    
    ?>
    <table>
    <?php
    $max = count($barcodes);
    $i = $max/9;
    for($j=0;$j<$i;$j++) {
    for($k=0;$k<3;$k++) {
    ?>
    <tr>
    <?php for($l=0;$l<3;$l++) {
        // prevent array overflow
        if ($j*9+$k*3+$l < $max) { ?>
    
    <!-- print barcode -- >
    <td><img src="<?php echo $barcodes[$j*9+$k*3+$l]; ?>.gif" alt=""></td>
    
    <!-- test - output array entry -->
    <td><?php echo $barcodes[$j*9+$k*3+$l]; ?></td>
    <!-- -->
    
    <?php ;} ;} ?>
    </tr>
    <?php ;} ?>
    <!-- blank line -->
    <tr style="height:50px;"><td>&nbsp;</td></tr>
    <?php ;} ?>
    </table>
    </body>
    </html>
    Note:

    a) I've added a simple check to avoid array overflow.

    b) For test purposes I've commented out the printing of the GIFs and added a test output to display the array entries. To print the barcodes, you need to un-comment the print line and comment out the test.
    Last edited by jedaisoul; 04-28-2014 at 05:50 AM.

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