php - regex - match "(posted|post|submitted) by:" from a text -

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I need to match & amp; Replace with each type of string with a string:

Note: Each string can be in a text or at the beginning of the text; In both cases, regex should get everything from the starting point to the end of the line

  • Posted by Lorem Ipsum someone on March ... \
  • Posted by: On a March ... \ n
  • Posted Someone March ... \ n
  • Posted by Lorem Ipsum on anyone ... ... \ n
  • by On ....
  • Submitted By: On Anyone ... ... \ n
  • Presented by Lorem Ipsum Code> someone ... ... \ n
    • \ n means only the end of the line

      This is what I did, but according to the expectation, the speed is not always to work fast 

        / (?: Posted | post | submitted) \ s) (? :( by)) (? :(. *)) \ S (. *) | / I   
        / edit:   
       OK, I need to match the problem at the beginning of the string and in the middle < Code> Posted  is submitted, and by the  by  string in the beginning, otherwise it will be something like "something like ..."   
       
       
       updated  
        / (by: ^ \ s) | (?. * (?: Post | deposited [T]} (?: Ed) [\ w | s] * by ??? \)) / im>   
       group index 1 will be your post. Submitted | ... and everything else on the left.  
        
       Enter image details here  < / Div>

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