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About Merkaber

  • Birthday 06/19/1995

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    Programming languages, databases, Japanese, cooking, drinking, longboarding

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  1. Okay guys, sorry for adding this thread... I am so blind -.- . Thank you all for your replys now I got it *head on table*
  2. Thank you for your reply, I understand the if clause, but I don't understand, why we need this if clause. There is no way, that $hint is not empty. $hint is for all times empty, thats what I understand. Because we declare it empty at the top and there is no other input for $hint.
  3. Hello everyone, I have a question about the PHP - AJAX example (http://www.w3schools.com/php/php_ajax_php.asp). In the PHP file, there is the variable " $hint ". But what is this variable used for? Here the code: $q = $_REQUEST["q"];$hint = "";// lookup all hints from array if $q is different from ""if ($q !== "") { $q = strtolower($q); $len=strlen($q); foreach($a as $name) { if (stristr($q, substr($name, 0, $len))) { if ($hint === "") { $hint = $name; } else { $hint .= ", $name"; } } }} You are declaring $hint = "". After there is no input, that could happen to $hint. Why there is the if clause? Maybe I am blind, but I don't get it. Second questions is about this code part: echo $hint === "" ? "no suggestion" : $hint; How you can use operators without function, what does ' $hint === "" ' and what does ' : ' ?I already red the whole example more than twice... but I don't get it. A short explanation or a link to another website which is explaining these would be awesome. Thank you in advance! (By copy and pasting, the example works, but I wanna understand it)(I am not native English speaker, please excuse my mistakes)
  4. Javascript... I need to learn it... but I really have no motivation ~

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