Possible Duplicate:
Best methods to parse HTML with PHP
I have data which contains a lot of times:
<td width="183">//I want to find what's here</td>
This td is for each item in this site, how do I get the content of each td?
You're generally best off using DOMDocument for all HTML/XML parsing:
$doc = new DomDocument();
$doc->loadHTML( '<html>...</html>' );
foreach( $dom->getElementsByTagName( 'td' ) as $node )
{
echo $node->nodeValue;
}
To get one TD with width="183", then you can use DomXPath
$xpath = new DOMXpath($dom);
$elements = $xpath->query("*/td[@width='183']");
foreach( $elements as $node )
{
echo $node->nodeValue;
}
Well, better not with preg_match... Better with:
php > $xml = new SimpleXmlElement('<root><td width="183">A</td><td width="182">B</td><td width="181">C</td></root>');
php > foreach($xml->xpath('//td[@width=183]') as $td) echo (string)$td,"
";
A
or similar.
if you absolutely have to...:
php > preg_match_all('/<td width="183">(.*?)<\\/td>/', '<root><td width="183">A</td><td width="182">B</td><td width="181">C</td></root>', $matches);
php > var_dump($matches);
array(2) {
[0]=>
array(1) {
[0]=>
string(22) "<td width="183">A</td>"
}
[1]=>
array(1) {
[0]=>
string(1) "A"
}
}
Anyway... I told you, that the regex approach is easily broken and not recommended.
EDIT: I fixed the "only 183"-part which was not clear to me from the beginning.
Use preg_match_all() and Check this example out:
<?php
// The \\2 is an example of backreferencing. This tells pcre that
// it must match the second set of parentheses in the regular expression
// itself, which would be the ([\w]+) in this case. The extra backslash is
// required because the string is in double quotes.
$html = "<b>bold text</b><a href=howdy.html>click me</a>";
preg_match_all("/(<([\w]+)[^>]*>)(.*?)(<\/\\2>)/", $html, $matches, PREG_SET_ORDER);
foreach ($matches as $val) {
echo "matched: " . $val[0] . "
";
echo "part 1: " . $val[1] . "
";
echo "part 2: " . $val[2] . "
";
echo "part 3: " . $val[3] . "
";
echo "part 4: " . $val[4] . "
";
}
?>
The above example will output:
matched: bold text
part 1: <b>
part 2: b
part 3: bold text
part 4: </b>
matched: click me
part 1: <a href=howdy.html>
part 2: a
part 3: click me
part 4: </a>
As you can you can $echo $val[3] to get what is inside the html tags. I got the example from this link.