How to limit insert keyword

TamHinh
TamHinh used Ask the Experts™
on
I have a form as below:

<input type="text" id="keywords" name="keywords" class="text" size="20" />

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I want when user input keywords separated by a comma as shown below:

nature, index, luxury, test1, test2, ..... test60

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for example the user put 60 keywords, But I only get a maximum of 50 key words, how to?
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Rick HobbsRETIRED
Top Expert 2006

Commented:
What is max_input_vars in php.ini set to?
Freelancer
Top Expert 2010
Commented:
I'm not sure to understand, so let me summarize:
you have an input type='text' where a user can put an unlimited number of keywords: you want to grab these keywords only up to 50 and have them separated by a comme. If this is the case, you can try this:

<?php

if (isset($_POST['submit'])){
  $kw = $_POST['keywords'];
  $kw = preg_replace("/\s+/", " ", $kw);
  $kwArr = explode(' ', $kw);
  $output = array_slice($kwArr, 5, count($kwArr));
  $output = array_diff($kwArr, $output);
  $keywords = implode(', ', $output);
  echo $keywords;
}

echo "<form method='post'>";
echo "<input type='text' name='keywords' value='' />";
echo "<input type='submit' name='submit' value='Submit' />";
echo "</form>";

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Cheers
TamHinh

Author

Commented:
If I want to limit the maximum number of characters of a keyword, how to? for example, each input keywords only have a maximum of 20 characters
Marco GasiFreelancer
Top Expert 2010

Commented:
Thanks for points. To limit the length of accepted keywords you can use this:

if (isset($_POST['submit'])){
  $kw = $_POST['keywords'];
  $kw = preg_replace("/\s+/", " ", $kw);
  $kwArr = explode(' ', $kw);
  $output = array_slice($kwArr, 5, count($kwArr));
  $output = array_diff($kwArr, $output);
  for($i = 0; $i<count($output); $i++){
    if (strlen($output[$i]) <= 20){
      $result[] = $output[$i];
    }
  }
  $keywords = implode(', ', $result);
  echo $keywords;
}

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Cheers

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