Simple server-side validation using php -

-



i have problem validation input , select fields. if inputs empty , click on submit warning "this field required" appears.

but when fill clientid input , selection box empty validation fail. or invers, when select box selected , input empty.

here code:

<!doctype html>   <html> <head> <style> .error {color: #ff0000;} </style> </head> <body>    <?php  $nameerr = $katalogerr = $selectkatalog = ""; $kdn = "";  if ($_server["request_method"] == "post") {   if (empty($_post["kdn"])) {     $nameerr = "this field required";   } else {     $kdn = test_input($_post["kdn"]);     // check if kdn contains letters, numbers , whitespace     if (!preg_match("/^[a-za-z0-9 ]*$/", $kdn)) {       $nameerr = "only letters, numbers , white space allowed";      }   }    if($_post["selectkatalog"] == 'default'){       $katalogerr = "this field required";   }   else {     $selectkatalog = $_post["selectkatalog"];   } }  function test_input($data) {     $data = trim($data);     $data = stripslashes($data);     $data = htmlspecialchars($data);     return $data; } ?>  <h2>order catalog</h2> <p><span class="error">* required field.</span></p> <form method="post" action="<?php echo htmlspecialchars($_server["php_self"]);?>">     clientid: <input type="text" name="kdn">   <span class="error">* <?php echo $nameerr;?></span>   <br><br>   catalog: <select name="selectkatalog">               <option value="default">bitte wählen:</option>               <option value="catalog1">catalog1</option>               <option value="catalog2">catalog2</option>               <option value="catalog3">catalog3</option>            </select>   <span class="error">* <?php echo $katalogerr;?></span>   <br><br>   <input type="submit" name="submit" value="submit">   </form>  <?php echo "<h2>your input:</h2>"; echo $kdn; echo "<br>"; echo $selectkatalog; ?>  </body> </html>





wiki

Comments

Post a Comment

Popular posts from this blog

python - Read npy file directly from S3 StreamingBody -

-
i have many .npy (numpy) , .json files saved in s3, need download , load these files. for json files downloading files , loading dictionary using following code: obj = s3.object(bucket, key) response = obj.get() body = response['body'].read().decode('utf-8') data = json.loads(body) that way avoid writing .json file disk , reading it. now want same .npy files, equivalent? currently downloading file, saving temp file on disk , loading np.load avoid if possible. following https://stackoverflow.com/a/28196540/3509999 : obj = s3.object(bucket, key) io.bytesio(obj.get()["body"].read()) f: # rewind file f.seek(0) arr = np.load(f) wiki
Read more

kotlin - Out-projected type in generic interface prohibits the use of metod with generic parameter -

-
i start using kotlin , defined interface this: interface aadapter<vh : recyclerview.viewholder> { fun oncreateaviewholder(parent: viewgroup): vh fun onbindaviewholder(v: vh, position: int) } and when try use on code: class klasa ( private val adapter: aadapter<*> ) { fun dosth(){ //... val vh = this.adapter.oncreateaviewholder(parent) //on below line error adapter.onbindaviewholder(v, position) //... } } i error out-projected type 'aadapter<*>' prohibits use of 'public abstract fun onbindaviewholder(v: t, position: int): unit i tied add "in" or "out" definition i'm confused. how allow it. replace aadapter<*> aadapter<recyclerview.viewholder> . class klasa ( private val adapter: aadapter<recyclerview.viewholder> ) { // ... because have declared aadapter has type parameter vh type subclass of recyclerview....
Read more

Asterisk AGI Python Script to Dialplan does not work -

-
i'm stuck project have check database of sip extension incoming caller id , dial sip extension. below receive when run script on asterisk cli. -- registered sip '9125' @ 192.168.1.102:50142 > saved useragent "zoiper rv2.8.40" peer 9125 [2017-08-22 13:53:33] notice[5095]: chan_sip.c:24558 handle_response_peerpoke: peer '9125' reachable. (17ms / 2000ms) == using sip rtp tos bits 184 == using sip rtp cos mark 5 -- executing [0112617769@from-trunk:1] answer("sip/obitrunk1-0000000d", "") in new stack > 0x1ca50d0 -- probation passed - setting rtp source address 192.168.1.98:16834 -- executing [0112617769@from-trunk:2] agi("sip/obitrunk1-0000000d", "test.py") in new stack -- launched agi script /var/lib/asterisk/agi-bin/test.py args: ['/var/lib/asterisk/agi-bin/test.py'] env line: agi_request: test.py env line: agi_channel: sip/obitrunk1-0000000d env line: agi_language: en env line: a...
Read more