alternating row colors - php

Question

I am looking for a solution to use the alternating colors row design in my table which is from a csv.
my code:
<?php
echo "<table style='text-align: left; width: 99%;' border='1'>\n\n
<thead>
<tr>
<th>data</th>
</tr>
</thead>";
$f = fopen("local/datafiles.csv", "r");
while (($line = fgetcsv($f)) !== false) {
echo "<tr class='odds'>";
foreach ($line as $cell) {
echo "<td style='font-weight: bold;'>" . htmlspecialchars($cell) . "</td>";
}
echo "</tr>\n";
}
fclose($f);
echo "\n</table>";
?>
so how can i have the tr class to alternate from odds and even?
thanks

Answer 1

have a variable
int count =0;
increment count on every iteration and take modolous by
count % 2
if(count % 2 == 0)
color = red //(make color of row = red)
else
color = yellow //(make color of row = yello)
count=count+1;
thats just an idea, u can accomodate this in ur code

Answer 2

You could use the css pseudo-selector :nth-of-type(odd|even)
http://reference.sitepoint.com/css/pseudoclass-nthoftype
If the ID of the table is styledTable, your stylesheet would look like:
#styledTable {
text-align: left;
width: 99%;
border: 1px solid black;
}
#styledTable tr:nth-of-type(even) {
background-color: red;
}
#styledTable tr:nth-of-type(odd) {
background-color: blue;
}

Answer 3

<?php
echo "<table style='text-align: left; width: 99%;' border='1'>\n\n
<thead>
<tr>
<th>data</th>
</tr>
</thead>";
$f = fopen("local/datafiles.csv", "r");
$i = 0;
while (($line = fgetcsv($f)) !== false) {
echo "<tr style='background-color: ".(($i%2)?'green':'blue').";'>";
foreach ($line as $cell) {
echo "<td style='font-weight: bold;'>" . htmlspecialchars($cell) . "</td>";
}
echo "</tr>\n";
$i++;
}
fclose($f);
echo "\n</table>";
?>
Or you could assign a class just the same way and style it using css. This is much better practice.

Answer 4

I will give you a better but much simpler solution, through CSS. First of all uniquely identify your table, i will show you a more general option.
table tr { backgroun: #ddd; }
table tr:nth-child(2n) { background: #ccc; }