PHP foreach循环无法正常工作-半数组迭代后死亡

Question

In this script i am loading an URL, that has 80 items. With the help of simple_html_dom iterating for each item 'tr' which is total of 80.

But foreach loop iterating only 42 items in the following code.

<?php
include_once "simple_html_dom.php";
$job_links=array();
$main_url = "http://xyz.com/rescnt=80";
$html = new simple_html_dom();
$html->load_file($main_url);
$fun = $html->find('div[class=dontent_wrap]',0)->find('table',0);
$i=0;
echo count($fun->find('tr'));
foreach($fun->find('tr') as $tr){
    echo ++$i;
    $td = $tr->find( 'td',1);
    $a =  $td->find('a',0);
    $link = $a->href;
    $id = $a->id;
        $id = trim(preg_replace('/link/','',$id)); 
     $my_link ="http://xyz.com/details/".$id.".html";
    if(strpos($link, $my_link)!==false){
        $job_links[] =trim($my_link);

    }
}
echo 'count:'.count($job_links);
print_r($job_links);
?>

On removing few lines from the loop it is iterating complete to 81.

foreach($fun->find('tr') as $tr){
    echo ++$i;
    $td = $tr->find( 'td',1);
}

I don't know what's going wrong. It already took my day.

It is not issue of timeout because i used set_time_limit(0); not working.

If the number of items "tr" redured to 40 then the loop is iterating to 21 again same problem (it also tells there is no issue of timeout)

All items are identical, have same types and same number of elements.

Answer 1

One td is missing from html, it seems, so:

 include("simple_html_dom.php");
$job_links=array();
$monster_main_url = "http://jobsearch.monsterindia.com/searchresult.html?day=1&res_cnt=80";
$html = new simple_html_dom();
$html->load_file($monster_main_url);
$fun = $html->find('div[class=dd_content_wrap]',0)->find('table',0);
$i=0;
echo count($fun->find('tr'));

foreach($fun->find('tr') as $tr){
    echo ++$i;


    $td = $tr->find( 'td',1);
    if($td!=NULL) {
    $a =  $td->find('a',0);


    $link = $a->href;
    $id = $a->id;
        $id = trim(preg_replace('/link/','',$id)); 
     $my_link ="http://jobs.monsterindia.com/details/".$id.".html";
    }

    else {

        $my_link="no link";

    }
    if(strpos($link, $my_link)!==false){
        $job_links[] =trim($my_link);

    }
}
echo '<br>count:'.count($job_links);
print_r($job_links);

Answer 2

Turn errors on:

ini_set('display_errors', 1);
error_reporting(E_ALL & ~E_NOTICE);

Put that right at the beginning of your file.