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php - mb_substr_replace

selnomeria Nov 27th, 2019 114 Never
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  1.             function mb_substr_replace($string, $replacement, $start, $length = null, $encoding = "UTF-8") {
  2.                 if (extension_loaded('mbstring') === true){
  3.                     $string_length = (is_null($encoding) === true) ? mb_strlen($string) : mb_strlen($string, $encoding);
  4.                     if ($start < 0) { $start = max(0, $string_length + $start); }
  5.                     else if ($start > $string_length) {$start = $string_length; }
  6.                     if ($length < 0){ $length = max(0, $string_length - $start + $length);  }
  7.                     else if ((is_null($length) === true) || ($length > $string_length)) { $length = $string_length; }
  8.                     if (($start + $length) > $string_length){$length = $string_length - $start;}
  9.                     if (is_null($encoding) === true) {  return mb_substr($string, 0, $start) . $replacement . mb_substr($string, $start + $length, $string_length - $start - $length); }
  10.                     return mb_substr($string, 0, $start, $encoding) . $replacement . mb_substr($string, $start + $length, $string_length - $start - $length, $encoding);
  11.                 }
  12.                 return (is_null($length) === true) ? substr_replace($string, $replacement, $start) : substr_replace($string, $replacement, $start, $length);
  13.             }
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