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Function \"lcfirst\" for PHP

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Adds the function "lcfirst" if it does not exist (it was first added in PHP 5.3.0) while its counterpart, "ucfirst" was added in PHP 4.

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  1. if ( ! function_exists('lcfirst'))
  2. {
  3.   function lcfirst($str)
  4.   {
  5.     if ( ! is_string($str))
  6.     {
  7.       throw new Exception("Subject must be of type string");
  8.     }
  9.     $str[0] = strtolower($str[0]);
  10.  
  11.     return $str;
  12.   }
  13. }

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