original_string: public function getStringAtIndex($sharedStringIndex)
      {
          $tempFilePath = $this->getSharedStringTempFilePath($sharedStringIndex);
          $indexInFile = $sharedStringIndex % $this->maxNumStringsPerTempFile;
  
          if (!$this->globalFunctionsHelper->file_exists($tempFilePath)) {
              throw new SharedStringNotFoundException("Shared string temp file not found: $tempFilePath ; for index: $sharedStringIndex");
          }
  
          if ($this->inMemoryTempFilePath !== $tempFilePath) {
              // free memory
              unset($this->inMemoryTempFileContents);
  
              $this->inMemoryTempFileContents = explode(PHP_EOL, $this->globalFunctionsHelper->file_get_contents($tempFilePath));
              $this->inMemoryTempFilePath = $tempFilePath;
          }
  
          $sharedString = null;
  
          // Using isset here because it is way faster than array_key_exists...
          if (isset($this->inMemoryTempFileContents[$indexInFile])) {
              $escapedSharedString = $this->inMemoryTempFileContents[$indexInFile];
              $sharedString = $this->unescapeLineFeed($escapedSharedString);
          }
  
          if ($sharedString === null) {
              throw new SharedStringNotFoundException("Shared string not found for index: $sharedStringIndex");
          }
  
          return rtrim($sharedString, PHP_EOL);
      }
code: public function getStringAtIndex($sharedStringIndex)
      {
          $tempFilePath = $this->getSharedStringTempFilePath($sharedStringIndex);
          $indexInFile = $sharedStringIndex % $this->maxNumStringsPerTempFile;
  
          if (!$this->globalFunctionsHelper->file_exists($tempFilePath)) {
              throw new SharedStringNotFoundException("Shared string temp file not found: $tempFilePath ; for index: $sharedStringIndex");
          }
  
          if ($this->inMemoryTempFilePath !== $tempFilePath) {
              // free memory
              unset($this->inMemoryTempFileContents);
  
              $this->inMemoryTempFileContents = explode(PHP_EOL, $this->globalFunctionsHelper->file_get_contents($tempFilePath));
              $this->inMemoryTempFilePath = $tempFilePath;
          }
  
          $sharedString = null;
  
          // Using isset here because it is way faster than array_key_exists...
          if (isset($this->inMemoryTempFileContents[$indexInFile])) {
              $escapedSharedString = $this->inMemoryTempFileContents[$indexInFile];
              $sharedString = $this->unescapeLineFeed($escapedSharedString);
          }
  
          if ($sharedString === null) {
              throw new SharedStringNotFoundException("Shared string not found for index: $sharedStringIndex");
          }
  
          return rtrim($sharedString, PHP_EOL);
      }
code_tokens: public function getStringAtIndex ( $ sharedStringIndex ) { $ tempFilePath = $ this -> getSharedStringTempFilePath ( $ sharedStringIndex ) ; $ indexInFile = $ sharedStringIndex % $ this -> maxNumStringsPerTempFile ; if ( ! $ this -> globalFunctionsHelper -> file_exists ( $ tempFilePath ) ) { throw new SharedStringNotFoundException ( "Shared string temp file not found: $tempFilePath ; for index: $sharedStringIndex" ) ; } if ( $ this -> inMemoryTempFilePath !== $ tempFilePath ) { // free memory unset ( $ this -> inMemoryTempFileContents ) ; $ this -> inMemoryTempFileContents = explode ( PHP_EOL , $ this -> globalFunctionsHelper -> file_get_contents ( $ tempFilePath ) ) ; $ this -> inMemoryTempFilePath = $ tempFilePath ; } $ sharedString = null ; // Using isset here because it is way faster than array_key_exists... if ( isset ( $ this -> inMemoryTempFileContents [ $ indexInFile ] ) ) { $ escapedSharedString = $ this -> inMemoryTempFileContents [ $ indexInFile ] ; $ sharedString = $ this -> unescapeLineFeed ( $ escapedSharedString ) ; } if ( $ sharedString === null ) { throw new SharedStringNotFoundException ( "Shared string not found for index: $sharedStringIndex" ) ; } return rtrim ( $ sharedString , PHP_EOL ) ; }
docstring: Returns the string located at the given index from the cache.
  
  @param int $sharedStringIndex Index of the shared string in the sharedStrings.xml file
  @return string The shared string at the given index
  @throws \Box\Spout\Reader\Exception\SharedStringNotFoundException If no shared string found for the given index
docstring_tokens: Returns the string located at the given index from the cache .