Created
March 18, 2013 07:37
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4Pics1Word word finder
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| <html> | |
| <head><title>4pics1word</title></head> | |
| <body> | |
| <h3>4pics1word</h3> | |
| <form method="GET" action=""> | |
| Letters <input type="text" name="w" maxlength="12" /> e.g., "lrckioodubue"<br /> | |
| Length <input type="text" name="l" maxlength="1" /> e.g., "7"<br /> | |
| <input type="submit" value="Find Words" /> | |
| </form> | |
| <?php | |
| // get letters and length | |
| $w = strtolower($_GET['w']); | |
| $l = $_GET['l']; | |
| // find words in dictionary | |
| // this will also return words that use same letter more than once | |
| $cmd = "egrep '^[$w]{".$l."}\$' /usr/share/dict/words"; | |
| // check if words are valid combinations | |
| $lines = explode("\n",shell_exec($cmd)); | |
| foreach ($lines as $word){ | |
| if (check($word, $w)) echo "$word\n"; | |
| } | |
| // function to check if the words can be formed | |
| // using combination of given letters | |
| function check($word, $letters){ | |
| for ($i=0;$i<strlen($word);$i++){ | |
| if (preg_replace("/".substr($word,$i,1)."/","",$letters, 1) == $letters) return false; | |
| else $letters = preg_replace("/".substr($word,$i,1)."/","",$letters, 1); | |
| } | |
| return true; | |
| } | |
| ?> | |
| </body> | |
| </html> |
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