SIMPLE HTML DOM内存泄漏

I have a script using simple_html_dom.

foreach ($urls as $url)
    {
       $html = file_get_html($url);

        if($html->innertext!=''){

            foreach($html->find('.doc div[style="padding-top:1px;border-bottom:1px solid #eaeaec;padding-bottom:6px;"]') as $b){
                $b->style='""';
                echo $b;
            }           
            }
        $html->clear();
        unset($html); 
    }

When I running this script I get the following error:

Fatal error: Allowed memory size of 444596224 bytes exhausted (tried to allocate 1272 bytes).

if you still want to parse this file

you can set your php.ini's memory_limit higher or use below code.

ini_set('memory_limit', '128M');

or optimize your code : (when found that, release it)

    $finder = $html->find('.doc div[style="..."]');

    foreach($finder as $index => $b){
        /* do something here */
        $finder[$index]->clear();
    }
    $html->clear();

maybe you can use REGEX remove or get what you need

for fix problem need to replace this function，

function clear(){
    $this->dom = null;
    $this->parent = null;
    $this->parent = null;
    $this->children = null;
}

on this:

function clear(){
    unset($this->dom);
    unset($this->parent);
    unset($this->parent);
    unset($this->children);
}

Q: This script is leaking memory seriously... After it finished running, it's not cleaning up dom object properly from memory..

A: Due to php5 circular references memory leak, after creating DOM object, you must call $dom->clear() to free memory if call file_get_dom() more then once.

Example:

$html = file_get_html(...); 
// do something... 
$html->clear(); 
unset($html);

Taken from their FAQ found here: http://simplehtmldom.sourceforge.net/manual_faq.htm