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  1. <body>
  2.   <form action="wyniki.php" method="post">
  3.     <textarea name="texarea" cols="50" rows="10">
  4.     </textarea>
  5.     <input type="submit" name="submit"  value="Usuń" />
  6.   </form>
  7. </body>
  8.  
  9.   <?php
  10.     $tekst=$_POST['texarea'];//1
  11.     $tekst_a=explode(' ',$tekst);//2
  12.     $tekst='';//3
  13.     if (count($tekst_a)>0)//4
  14.     {
  15.       foreach($tekst_a as $wyraz)//4 
  16.       $tekst.=trim($wyraz).' ';//4
  17.       $tekst=trim($tekst);//5
  18.     }
  19.     echo $tekst;//6
  20.   ?> 
  21. </body>
  22.  
Success #stdin #stdout #stderr 0.02s 25936KB
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stdin
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sdrfdsfsdf sdfdf      sdfdsdfdsdf
stdout
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<body>
  <form action="wyniki.php" method="post">
    <textarea name="texarea" cols="50" rows="10">
    </textarea>
    <input type="submit" name="submit"  value="Usuń" />
  </form>
</body>

   
</body>
stderr
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PHP Notice:  Undefined index: texarea in /home/k1WXyN/prog.php on line 10
https://ideone.com/tDzVTA
language:
PHP (php 7.3.5)
created:
1 day ago
visibility:
public

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