(PHP 5, PHP 7, PHP 8)
DOMCharacterData::replaceData — Replace a substring within the character data
   Replace count characters starting from position
   offset with data.
  
offsetThe offset from which to start replacing.
count
       The number of characters to replace. If the sum of
       offset and count exceeds
       the length, then all characters to the end of the data are replaced.
      
dataThe string with which the range must be replaced.
DOM_INDEX_SIZE_ERR
       Raised if offset is negative or greater than the
       number of UTF-8 codepoints in data, or if count is
       negative.
      
