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Alex Rivera
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In the following code the callback function passed to wrap_map can't see the argument in the outer function, why? (see code comment for detail) public static function wrap_implode($ar, $wrap, $delim){ echo "wrap is $wrap"; //wrap is ok $res = array_map(function($val){ echo "wrap is $wrap"; //wrap is not set here! return $wrap. $val . $wrap; }, $ar); return implode($delim, $res); }
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