curl กับ preg_match รบกวนดูให้หน่อยค่ะ ว่าอยากจะ preg_match มือใหม่ regular expression ค่ะ

function getTopics($url) {
    $curl = curl_init($url); 
    curl_setopt($curl, CURLOPT_FAILONERROR, true); 
    curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); 
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    $result = curl_exec($curl);
    curl_close($curl);
    preg_match_all("/topic=[0-9]{1,}\.[0-9]{1,}/", $result, $matches, PREG_SET_ORDER);

    $array = [];

    foreach($matches as $match) {
        foreach($match as $val) {
            $array[] = str_replace('topic=', '', $val);
        }
    }

    return array_unique($array);
}

$str = <<<EOF
<div>Do not match me</div>
<div type="special_type" src="bla"> match me</div>
<a>not me</a>
<div src="blaw" type="special_type" > match me too</div>
EOF;

$doc = new DOMDocument();
$doc->loadHTML($str);    
$selector = new DOMXPath($doc);

$result = $selector->query('//div[@type="special_type"]');

// loop through all found items
foreach($result as $node) {
    echo $node->getAttribute('src');
}

<?php
$data = '
<a href="http://sbayjai.com/form/index.php?topic=67065.0">test_curl</a>
<a href="http://sbayjai.com/form/index.php?topic=999.1">xxxxcurl</a>
<a href="http://sbayjai.com/form/index.php?topic=66665.0">test_curl</a>
';
preg_match_all('/\<a[^\?]+\?([^\"]+)\"\s*\>test_curl\<\/a\>/', $data, $match);
echo '<pre>',htmlspecialchars(print_r($match, true)),'</pre>';
if( count($match[0])){
	foreach($match[1] as $vl){
		preg_match_all('/topic\=([0-9]+\.[0-9]+)/', $vl, $m1);
		if(count($m1[1])) echo $m1[1][0], '<br>';
	}
}

<?php

$curl = curl_init('http://sbayjai.com/forum/index.php?board=12.0'); 
curl_setopt($curl, CURLOPT_FAILONERROR, true); 
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); 
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false); 
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);   
$result = curl_exec($curl); 
curl_close($curl);

print_r($matches1);
preg_match_all('/\<a[^\?]+\?([^\"]+)\"\s*\>test_curl\<\/a\>/', $result, $matches1);
echo '<pre>',htmlspecialchars(print_r($matches1, true)),'</pre>';
if( count($matches1[0])){
	foreach($matches1[1] as $vl){
		preg_match_all('/topic\=([0-9]+\.[0-9]+)/', $vl, $m1);
		if(count($m1[1])) echo $m1[1][0], '<br>';
	}
}

?>

<script language="JavaScript" src="bbcode.js" type="text/javascript"></script>
<script language="JavaScript" type="text/javascript">
			

			function showimage()
			{
				document.images.icons.src = icon_urls[document.frmMain.txtDescription.icon.options[document.frmMain.txtDescription.icon.selectedIndex].value];
			}
			

				function bbc_highlight(something, mode)
				{
					something.style.backgroundImage = "url("+(mode ? "/images/bbcode/bbc_hoverbg.gif?v=1001)" : "/images/bbcode/bbc_bg.gif?v=1001)");
				}
			</script>
            <a onclick="surroundText('', '', document.forms.frmMain.txtDescription); return false;" href="javascript:void(0);"><img onmouseover="bbc_highlight(this, true);" title="ตัวหนา" style="margin: 1px 2px 1px 1px; background-image: url(&quot;/images/bbcode/bbc_bg.gif?v=1001&quot;);" onmouseout="if (window.bbc_highlight) bbc_highlight(this, false);" height="22" alt="ตัวหนา" src="/images/bbcode/bold.gif?v=1001" width="23" align="bottom" border="0"></a>
     <textarea name="txtDescription" rows="25" class="topicSubject" id="txtDescription" style="width:800px;" onkeyup="storeCaret(this);" onclick="storeCaret(this);" onchange="storeCaret(this);" onselect="storeCaret(this);"></textarea>

$data = '

<a href="http://www.rayongcenter.com/forum/index.php/topic,12345.0.html">test_curl</a>

';
preg_match_all('/\<a[^\?]+\/([^\"]+)\"\s*\>test_curl\<\/a\>/', $data, $match);
echo '<pre>',htmlspecialchars(print_r($match, true)),'</pre>';