CODEWITHSUNDEEP
phpstring
Corey
Corey

Reputation: 33

remove words from string by position php

I want to remove the words from a string by a given position from input, also the following words with the position from input.

EXAMPLE:

position = 2

string = aa bb cc dd ee ff gg hh

Will become: aa cc ee gg

I have:

$delete = $position - 1;
$words = explode(" ", $string);
if(isset($words[$delete])) unset($words[$delete]);
$string = implode(" ", $words);
echo $string;}

That displays

aa cc dd ee ff gg hh

Upvotes: 0

Views: 828

Answers (3)

Barmar
Barmar

Reputation: 780851

$position = 2;
$string = 'aa bb cc dd ee ff gg hh';
$arr=explode(' ', $string);
$count = count($arr);
// $position-1 because PHP arrays are 0-based, but the $position is 1-based.
for ($i = $position-1; $i < $count; $i += $position) {
  unset($arr[$i]);
}
$new_string = implode(' ', $arr);
echo $new_string;

Upvotes: 1

sinisake
sinisake

Reputation: 11328

 $position = 2;

$string = 'aa bb cc dd ee ff gg hh';

$arr=explode(' ', $string);
$final_str='';

for($i=0;$i<count($arr);$i++) {

    if($i%$position==0) {
    $final_str.=$arr[$i].' ';
    }

}

echo $final_str;

Upvotes: 0

Michael
Michael

Reputation: 1231

This is untested but i think this is what you are looking for. This will remove every 2nd word after a deletion or when starting to count the words.

$deletePos = 2;
$words = explode(" ", $string);

$i = 1;
foreach($words as $key => $word) {
  if ($i == $deletePos) {
    unset($words[$key]);
    $i = 1;
    continue;
  }
  $i++;
}

Upvotes: 1

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