note 64321 added to language.operators.logical

>> I have read a few of these responses and quite honestly didn't find one that explained >> the differences between the "||" and "OR" operators. The difference is explained in the link to on operator precedence. The '||' operators are evaluated before assignment ('='), whereas the 'or' operators are evaluated after the assignment. In your second example you are telling PHP to first assign the result of '(choice1 != false ? 'hah' : 'boo')' to $val, then 'or' it against the rest of the statement. Try the example below and you will see what I mean (note the extra brackets to enforce precedence): <?php define ('choice1', false); define ('choice2', "dog"); define ('default1', "other"); $val = array(); $val["Test 1"] = (choice1 != false ? 'hah' : 'boo') || (choice2 != false ? 'hah2' : 'boo2') || (default1 != false ? 'hah3' : 'boo3'); $val["Test 1b"] = ((choice1 != false ? 'hah' : 'boo') || (choice2 != false ? 'hah2' : 'boo2') || (default1 != false ? 'hah3' : 'boo3')); $val["Test 2"] = (choice1 != false ? 'hah' : 'boo') or (choice2 != false ? 'hah2' : 'boo2') or (default1 != false ? 'hah3' : 'boo3'); $val["Test 2b"] = ((choice1 != false ? 'hah' : 'boo') or (choice2 != false ? 'hah2' : 'boo2') or (default1 != false ? 'hah3' : 'boo3')); foreach ( $val as $test => $result ) { print ( "$test : " ); var_dump ( $result ); print "<br />\n<br />\n"; } ?> ---- Server IP: 85.116.0.130 Probable Submitter: 213.218.224.49 ---- X-Spam-Status: No, hits=3.3 required=5.0 tests=DATE_MISSING,FROM_NO_LOWER, HTML_MESSAGE autolearn=no version=2.64 ---- Manual Page -- http://www.php.net/manual/en/language.operators.logical.php Edit -- http://master.php.net/note/edit/64321 Del: integrated -- http://master.php.net/note/delete/64321/integrated Del: useless -- http://master.php.net/note/delete/64321/useless Del: bad code -- http://master.php.net/note/delete/64321/bad+code Del: spam -- http://master.php.net/note/delete/64321/spam Del: non-english -- http://master.php.net/note/delete/64321/non-english Del: in docs -- http://master.php.net/note/delete/64321/in+docs Del: other reasons-- http://master.php.net/note/delete/64321 Reject -- http://master.php.net/note/reject/64321 Search -- http://master.php.net/manage/user-notes.php