関数 mbstring_binary_safe_encoding()
2014/12/11
mbstring_binary_safe_encoding()
定義ファイル :/blog/wp-includes/functions.php 24
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | /** * Set the mbstring internal encoding to a binary safe encoding when func_overload * is enabled. * * When mbstring.func_overload is in use for multi-byte encodings, the results from * strlen() and similar functions respect the utf8 characters, causing binary data * to return incorrect lengths. * * This function overrides the mbstring encoding to a binary-safe encoding, and * resets it to the users expected encoding afterwards through the * `reset_mbstring_encoding` function. * * It is safe to recursively call this function, however each * `mbstring_binary_safe_encoding()` call must be followed up with an equal number * of `reset_mbstring_encoding()` calls. * * @since 3.7.0 * * @see reset_mbstring_encoding() * * @param bool $reset Optional. Whether to reset the encoding back to a previously-set encoding. * Default false. */ function mbstring_binary_safe_encoding( $reset = false ) { static $encodings = array(); static $overloaded = null; if ( is_null( $overloaded ) ) $overloaded = function_exists( 'mb_internal_encoding' ) && ( ini_get( 'mbstring.func_overload' ) & 2 ); if ( false === $overloaded ) return; if ( ! $reset ) { $encoding = mb_internal_encoding(); array_push( $encodings, $encoding ); mb_internal_encoding( 'ISO-8859-1' ); } if ( $reset && $encodings ) { $encoding = array_pop( $encodings ); mb_internal_encoding( $encoding ); } } |