PHP strpos array

Question

I am trying to loop through a string that contains html from a scraped webpage. First I look to return all links that contain the word "result" and then I would like to organize all the links that contain one of four cases, "base", "second", "third" or "latest" and create a fluid array.

Below is what I have come up with but it returns "Warning: strpos(): needle is not a string or an integer". I cannot seem to get the array cases to work.

Any help would be greatly appreciated. Thank you

    $key = "results";
    $reportKey = array("base", "second", "third","latest");
    $keyArray = array();
    foreach($html->find('a') as $element){
        if (strpos($element->href, $key) !== false){
            if (strpos($element->href, $reportKey) !== false){
                $keyArray[] = $element->href;
            }
        }
    }
    echo "<pre>" . print_r($keyArray) . "</pre> ";

I guess you could try to make sure that an <a> does have an href attribute before trying to access it. — aletzo
– aletzo, Commented Jun 28, 2018 at 12:26

revo · Accepted Answer · 2018-06-28 12:39:17Z

4

You can't use an array as a needle in strpos. Change second if to:

if (str_replace($reportKey, "", $element->href) === $element->href) {
    $keyArray[] = $element->href;
}

answered Jun 28, 2018 at 12:39

revo

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Comments

Jaime Alvarado Jiménez · Accepted Answer · 2018-06-28 12:39:06Z

1

strpos() does not allow more than one needle, you can do this:

$key = "results";
$reportKey = array("base", "second", "third","latest");
$keyArray = array();

foreach($html->find('a') as $element)
{
    if (strpos($element->href, $key) !== false){
        if (
            strpos($element->href, $reportKey[0]) !== false
            || strpos($element->href, $reportKey[1]) !== false
            || strpos($element->href, $reportKey[2]) !== false
            || strpos($element->href, $reportKey[3]) !== false
         ){
             $keyArray[] = $element->href;
         }
     }
 }

 echo "<pre>" . print_r($keyArray) . "</pre> ";

You could also do your own function, this is only an example:

function multi_strpos($string, $check, $getResults = false)
{
$result = array();
  $check = (array) $check;

  foreach ($check as $s)
  {
    $pos = strpos($string, $s);

    if ($pos !== false)
    {
      if ($getResults)
      {
        $result[$s] = $pos;
      }
      else
      {
        return $pos;          
      }
    }
  }

  return empty($result) ? false : $result;
}

edited Jun 28, 2018 at 12:39

answered Jun 28, 2018 at 12:32

Jaime Alvarado Jiménez

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1 Comment

Bestinc Over a year ago

For my purposes, your first suggestion worked. Thanks!

AymDev · Accepted Answer · 2021-05-25 16:52:30Z

0

A solution using array_map() and in_array():

$key = 'results';
$reportKey = ['base', 'second', 'third', 'latest'];
$keyArray = [];

foreach($html->find('a') as $element) {
    if (false !== strpos($element->href, $key)) {

        // I changed the condition here
        $pos = array_map(fn($k) => strpos($element->href, $k) !== false, $reportKey);

        if (in_array(true, $pos)){
            $keyArray[] = $element->href;
        }
    }
}

$pos will be an array containing booleans based on matches between $element->href and $reportKey items.
Then we check with in_array() if it matched at least one time.

edited May 25, 2021 at 16:52

answered Jun 28, 2018 at 12:52

AymDev

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