unicode_set_error_mode Set the error mode for strings conversions &reftitle.description; boolunicode_set_error_mode intdirection intmode This function sets the error mode for string conversions between different encodings. An error can occur during conversion when an illegal character is encountered or if a character cannot be represented into the new encoding. By default, when an error is encountered, the conversion stops. &reftitle.parameters; direction The direction sets the conversion direction to which the error mode will apply. This can either be FROM_UNICODE, which will set the error mode for conversions from a unicode string to a binary string or TO_UNICODE, which will set the error mode for conversions from a binary string to a unicode string. mode mode determines how the conversion errors are handled. It should be one of the following constants: Mode Description U_CONV_ERROR_STOP Stop the conversion. This is the default mode. U_CONV_ERROR_SKIP Skip the character. U_CONV_ERROR_SUBST Substitute the character. The substituting character can be set with unicode_set_subst_char. U_CONV_ERROR_ESCAPE_UNICODE Escape the faulty bytes and represent them in the Unicode character format. U_CONV_ERROR_ESCAPE_ICU Escape the faulty bytes and represent them in the ICU character format. U_CONV_ERROR_ESCAPE_JAVA Escape the faulty bytes and print them in the Java character format. U_CONV_ERROR_ESCAPE_XML_DEC Escape the faulty bytes and represent them in decimal format. U_CONV_ERROR_ESCAPE_XML_HEX Escape the faulty bytes and represent them in hexadecimal format. &reftitle.returnvalues; &return.success; &reftitle.errors; Emits a E_WARNING level error if the direction or the mode are invalid. &reftitle.notes; &warn.experimental.func; &reftitle.seealso; unicode_encode unicode_decode