1--TEST-- 2Object to string conversion: error cases and behaviour variations. 3--FILE-- 4<?php 5function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) { 6 echo "Error: $err_no - $err_msg\n"; 7} 8set_error_handler('test_error_handler'); 9error_reporting(8191); 10 11 12echo "Object with no __toString():\n"; 13$obj = new stdClass; 14echo "Try 1:\n"; 15printf($obj); 16printf("\n"); 17 18echo "\nTry 2:\n"; 19printf($obj . "\n"); 20 21 22echo "\n\nObject with bad __toString():\n"; 23class badToString { 24 function __toString() { 25 return 0; 26 } 27} 28$obj = new badToString; 29echo "Try 1:\n"; 30printf($obj); 31printf("\n"); 32 33echo "\nTry 2:\n"; 34printf($obj . "\n"); 35 36?> 37--EXPECTF-- 38Object with no __toString(): 39Try 1: 40Error: 4096 - Object of class stdClass could not be converted to string 41Object 42 43Try 2: 44Error: 4096 - Object of class stdClass could not be converted to string 45 46 47 48Object with bad __toString(): 49Try 1: 50Error: 4096 - Method badToString::__toString() must return a string value 51 52 53Try 2: 54Error: 4096 - Method badToString::__toString() must return a string value 55
