Message:

I have a table in a string where the string could contain this string ($table_data):

<table>

<tr class="rowset-1"><td>cell1</td></tr>

<tr class="rowset-2"><td>cell1</td></tr>

<tr class="rowset-3"><td>cell1</td></tr>

</table>

From this string I want to count how many rows there are in the table. I do count number of rows like this:

$i = 1;

while( true )

{

    if (strpos( $table_data, 'rowset-'.$i ) === false ) 

    {

        $nr_rows = $i - 1;

        break;

    }

    $i++;

}

What I'm doing is simply to look for the class rowset-X were x is a number starting with 1. If it does not exist I have counted number of rows... (In above case 3 rows)

I'm looking for a way just to get largest number of rowset-? in a string (where ? is the largest number) with a better approach (My gut feeling is that my current approach is absolutely not the best).

My Answer:

php

$table_data = "substring-1, substring-2, substring-3, substring-1, substring-4, substring-1";



$sub_string = "substring-";



$count_array = array_count_values(array_filter(explode(", ", $table_data)));



$max_count = 0;

foreach ($count_array as $key => $value) {

    if (strpos($key, $sub_string) === 0) {

        $max_count = max($max_count, $value);

    }

}



echo "Max count of substring- occurrences: " . $max_count;

John Davidson

php - Count max value where substring = substring-?

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