For loop Array Display

Question

i have array value like this

Array ( 
    [0] => A1
    [1] => A2
) 
Array ( 
    [0] => B1 
    [1] => B2
    [2] => B3
)

For exploding

$explodedeductedfinal = explode(",",$CODE);

this is my php code for outputting the data in td

foreach($explodedeductedfinal as $is){
    $bankname = trim($is);

     if (!empty($bankname)) {
         echo   "<td class='center'>$bankname</td>";
     }else{
         echo   "<td class='center'>'novalue'</td>";
     }
}

Output:

|Column A|Column B|Column C| 
    A1       A2
    B1       B2      B3

Desired Output:

 |Column A|Column B|Column C| 
      A1      A2    novalue
      B1      B2      B3

i just want to output when the $bankname is empty it will show no value

The problem is your foreach never goes to column c in your first array because there's only two elements. — Chin Leung
– Chin Leung, Commented Sep 29, 2017 at 17:38

AbraCadaver · Accepted Answer · 2017-09-29 17:45:12Z

1

The third element is not empty, it doesn't exist, so foreach will only loop two. You might force it to the length you want and supply default values:

$default = array_fill(0, 3, 'novalue');
$explodedeductedfinal = array_replace($default, explode(",", $CODE));

foreach($explodedeductedfinal as $is){
     $bankname = trim($is);
     echo "<td class='center'>$bankname</td>";
}

edited Sep 29, 2017 at 17:45

answered Sep 29, 2017 at 17:41

AbraCadaver

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10 Comments

Mia Santos Over a year ago

Call to undefined function arrray_fill() i

Ralph Thomas Hopper Over a year ago

if you ever need it for an undetermined amount of columns, max(array_map('count', $The_array_of_arrays)); should return you the number of columns you need

Mia Santos Over a year ago

i have quick question how about if the array all have no value ?

AbraCadaver Over a year ago

Then you will get 3 columns of novalue

Mia Santos Over a year ago

@AbraCadaver sir how about if theres no array value?

|

Ralph Thomas Hopper · Accepted Answer · 2017-09-29 17:32:07Z

0

well the foreach will go through every element of the array.

if (!empty($bankname)) {

Would not be empty since you are in a foreach. If there is always 3 columns, you could look into using a simple for statement, or alternatively, use javascript to fill in all empty cells in a table with a default value. for that, see this fiddle. I have had to use it in the past.

http://jsfiddle.net/yL8t1psf/1/

answered Sep 29, 2017 at 17:32

Ralph Thomas Hopper

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1 Comment

Ralph Thomas Hopper Over a year ago

OK, and is your array 3 columns at all times?

Nic3500 · Accepted Answer · 2017-09-29 17:58:26Z

Calculate the maximum index of your arrays and loop on that instead of foreach. From a database, you could get the max number of values. Then use isset() to verify if the value is set for that index or not.

I coded this (quick and dirty, no database, no output formatting):

<table>
<?php
    $arA = array(0 => 'A1', 1 => 'A2');
    $arB = array(0 => 'B1', 1 => 'B2', 2 => 'B3');

    function output_ar($ar,$maxindex)
    {
        for ($i = 0; $i <= $maxindex; $i++)
        {
            if (isset($ar[$i]))
            {
                echo "<td>" . $ar[$i] . "</td>";
            }
            else
            {
                echo "<td>novalue</td>";
            }
        }
    }

    $maxindex = max(count($arA),count($arB)) -1;
    echo "<tr>\n";
    output_ar($arA,$maxindex);
    echo "</tr>\n<tr>\n";
    output_ar($arB,$maxindex);
    echo "</tr>\n";
?>
</table>

The code to fill your array from the database is left to you as an exercise :-) . Your initial question does not ask for that.
PHP: w3schools.com/php. And for MySQL connectivity, w3schools.com/php/php_mysql_connect.asp. StackOverflow is not a school, but w3schools is!

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