wikimedia / mediawiki

							$items[5] = gzuncompress( $items[5] );

							MediaWiki\restoreWarnings();

							if ( $items[5] === false ) {

								// decompression failed

								wfDebug( __METHOD__ . ' Error decompressing iTxt chunk - ' . $items[1] . "\n" );

								fseek( $fh, self::$crcSize, SEEK_CUR );

								continue;

							}

						} else {

							wfDebug( __METHOD__ . ' Skipping compressed png iTXt chunk due to lack of zlib,'

								. " or potentially invalid compression method\n" );

					$content = gzuncompress( $content );

					MediaWiki\restoreWarnings();

					if ( $content === false ) {

						// decompression failed

						wfDebug( __METHOD__ . ' Error decompressing zTXt chunk - ' . $keyword . "\n" );

						fseek( $fh, self::$crcSize, SEEK_CUR );

						continue;

					}

					MediaWiki\suppressWarnings();

					$content = iconv( 'ISO-8859-1', 'UTF-8', $content );