Php parse html dom and count specific rows

Question

I'm using the "Simple php DOM Parser" to parse an html table and count its row.

I solved to count all the rows (tr) in it with this code:

$rows = $table->find('.trClass');
$count = count($rows);
echo $count;

And I correctly get the number of all the rows in the table.

Now I want to count only the rows which contains a specific td (with a specific string).
We could assume that I want to count only the rows with this td:

<td class="tdClass" align="center" nowrap="">TARGET STRING</td>

How can I modify the first code to match this scope?

I tried to use "preg_match" or "preg_match_all" but I don't have much experience in it, so I miss the correct syntax..I think.

Any help is very appreciated!

Styxxy · Accepted Answer · 2012-05-04 07:18:15Z

1

How about:

<?php
$targetString = 'TARGET STRING';
$rows = $table->find('.trClass');

$count = 0;
foreach($rows as $row) {
    foreach($row->find('td') as $td) {
        if ($td->innertext === $targetString) {
            $count++;
            break;
        }
    }
}

edited May 4, 2012 at 7:18

answered May 3, 2012 at 21:19

Styxxy

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5 Comments

Riccardo Malesani Over a year ago

Thanks a lot, but an error displays me with your code: "syntax error, unexpected '(', expecting T_STRING or T_VARIABLE or '{' or '$' in", referring to the "foreach($row->('td') as $td) {" line..

Riccardo Malesani Over a year ago

Ok, I found out the solution for the error (you missed "find") and now it works great! Thanks a lot !!!

Styxxy Over a year ago

Yeah sorry, I missed that one. Something clearly went wrong with the copy paste :). Fixed it also in the code now.

Riccardo Malesani Over a year ago

Don't worry and thanks again. Now I'm facing a stronger challenge regarding this. You can find the new question here: stackoverflow.com/questions/10453380/…

Styxxy Over a year ago

Okay, I'll take a look at it. Actually, it is not much of a stronger challenge.

Francis Avila · Accepted Answer · 2012-05-03 21:33:43Z

0

$target = 'TARGET STRING';

$n_matchingrows = 0;

$rows = $table->find('tr.trClass');
foreach($rows as $row) {
    $cell = $row->find('td.tdClass[align=center][nowrap=""]', 0);
    if ($cell and $cell->innertext===$target) {
       $n_matchingrows += 1;
    }
}

edited May 3, 2012 at 21:33

answered May 3, 2012 at 21:20

Francis Avila

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2 Comments

Styxxy Over a year ago

Small mistake in this approach, if a TR has multiple TD's with the target string, your count will be wrong ;).

Riccardo Malesani Over a year ago

To answer your doubt, the target string could be contained only one time in each matching row (only one TD's target string for matching row)

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