Using preg_grep() : preg_grep « String « PHP

1. PHP
2. String
3. preg_grep

Using preg_grep()

 
<?
$text=<<<TEXT
"asdf.asdf,asdf!asdf
TEXT;

$words = preg_split('/[",.!\s]/', $text, -1, PREG_SPLIT_NO_EMPTY);

$double_letter_words = preg_grep('/([a-z])\\1/i',$words);

foreach ($double_letter_words as $word) {
    print "$word\n";
}
?>
  
  

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