PHP function to replace the middle part of the string with ellipses

This article mainly introduces the function of PHP to replace the middle part of a string with an ellipsis. Interested friends can refer to it. I hope it will be helpful to everyone.

The example in this article describes how PHP replaces the middle character of a string with an ellipsis. The specific analysis is as follows:

For a long string, if you only want the user to see the beginning and end of the content and hide the middle content, you can use this php function, which can specify the middle string to be hidden. The number of

/**
 * Reduce a string by the middle, keeps whole words together
 *
 * @param string $string
 * @param int $max (default 50)
 * @param string $replacement (default [...])
 * @return string
 * @author david at ethinkn dot com
 * @author loic at xhtml dot ne
 * @author arne dot hartherz at gmx dot net
 */
function strMiddleReduceWordSensitive($string,$max=50,$rep='[...]'){
  $strlen = strlen($string);
  if ($strlen <= $max)
    return $string;
  $lengthtokeep = $max - strlen($rep);
  $start = 0;
  $end = 0;
  if (($lengthtokeep % 2) == 0) {
    $start = $lengthtokeep / 2;
    $end = $start;
  } else {
    $start = intval($lengthtokeep / 2);
    $end = $start + 1;
  }
  $i = $start;
  $tmp_string = $string;
  while ($i < $strlen) {
    if (isset($tmp_string[$i]) and $tmp_string[$i] == &#39; &#39;) {
      $tmp_string = substr($tmp_string, 0, $i) . $rep;
      $return = $tmp_string;
    }
    $i++;
  }
  $i = $end;
  $tmp_string = strrev ($string);
  while ($i < $strlen) {
    if (isset($tmp_string[$i]) and $tmp_string[$i] == &#39; &#39;) {
      $tmp_string = substr($tmp_string, 0, $i);
      $return .= strrev ($tmp_string);
    }
    $i++;
  }
  return $return;
  return substr($string, 0, $start).$rep.substr($string, - $end);
}

Demonstration example:

// example:
$text = 'This is a very long test sentence, bla foo bar nothing';
print strMiddleReduceWordSensitive ($text, 30) . "\n";
// Returns: This is a very[...]foo bar nothing (~ 30 chrs)
print strMiddleReduceWordSensitive ($text, 30, '...') . "\n";
// Returns: This is a very...foo bar nothing (~ 30 chrs)

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