1--TEST-- 2Test iconv_substr() function : error conditions - Pass an unknown encoding 3--EXTENSIONS-- 4iconv 5--FILE-- 6<?php 7/* 8 * Pass an unknown encoding to iconv_substr() to test behaviour 9 */ 10 11echo "*** Testing iconv_substr() : error conditions ***\n"; 12 13$str = 'Hello, world'; 14$start = 1; 15$length = 5; 16$encoding = 'unknown-encoding'; 17 18var_dump( iconv_substr($str, $start, $length, $encoding)); 19 20echo "Done"; 21?> 22--EXPECTF-- 23*** Testing iconv_substr() : error conditions *** 24 25Warning: iconv_substr(): Wrong encoding, conversion from "unknown-encoding" to "UCS-4LE" is not allowed in %s on line %d 26bool(false) 27Done 28