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PHP String Tips: If we want to check are spelled corectly, we have php functions: pspell. These functions allow you to check the spelling of a word and offer suggestions. Your php must be compiled with pspell support (need the aspell library).

<?
$str = "ceck this sentenc. Help me!";

$dict = pspell_new("en", "british");
$words = str_word_count($str, 1);

foreach($words as $v){
	if(!pspell_check($dic, $v)){
		$errors[] = $v;
	}	
}

if(sizeof($errors) > 0){
	echo "error words: ".implode(", ",$errors);
}

?>

Next information aspell http://aspell.sourceforge.net/.