note 102385 added to language.operators.assignment

Using $text .= "additional text"; instead of $text =  $text ."additional text"; can seriously enhance performance due to memory allocation efficiency. 

I reduced execution time from 5 sec to .5 sec (10 times) by simply switching to the first pattern for a loop with 900 iterations over a string $text that reaches 800K by the end.
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Manual Page -- http://www.php.net/manual/en/language.operators.assignment.php
Edit        -- https://master.php.net/note/edit/102385
Del: integrated  -- https://master.php.net/note/delete/102385/integrated
Del: useless     -- https://master.php.net/note/delete/102385/useless
Del: bad code    -- https://master.php.net/note/delete/102385/bad+code
Del: spam        -- https://master.php.net/note/delete/102385/spam
Del: non-english -- https://master.php.net/note/delete/102385/non-english
Del: in docs     -- https://master.php.net/note/delete/102385/in+docs
Del: other reasons-- https://master.php.net/note/delete/102385
Reject      -- https://master.php.net/note/reject/102385
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