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PHP Buildin functions

array_map

Replaces the contents of the array for each element with the result of the function in the first argument of array_map

array_map example

<?php
function double($n) {
  return ($i + $i);
}
 
$numbers = [1, 4, 5, 9, 15];
print_r($numbers);
$additions = array_map('double', $numbers);
print_r($additions);
?>

mysqli_real_escape_string', array($fof_connection, $args)

$args is an array. These

$result = mysqli_real_escape_string', ($fof_connection, $args);
$result = mysqli_real_escape_string', array($fof_connection, $args);

do not work since mysqli_real_escape_string can not handle an array

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