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<?php
$a = array('aa','bb','cc','dd');
 
function addRq($sValue) {
    return 'rq'.$sValue;
}
$newA = array_map("addRq", $a);
var_dump($newA);

Success #stdin #stdout 0.01s 23540KB

stdin

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Standard input is empty

stdout

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array(4) {
  [0]=>
  string(4) "rqaa"
  [1]=>
  string(4) "rqbb"
  [2]=>
  string(4) "rqcc"
  [3]=>
  string(4) "rqdd"
}

https://ideone.com/tQJB4Q

language:

PHP (php 7.3.5)

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