Solved with php
<?php
// Search and Replace in Master Slider params with php
// Make backup before running the script
$slider_db= mysqli_query($con1,”SELECT * FROM wp_masterslider_sliders ” );
while($slider = mysqli_fetch_array($slider_db))
{
$params = $slider[“params”];
$decoded = base64_decode($params); // decode
$decoded = str_replace(‘2015/’, ‘dir15/’,$decoded); // search and replace
$encoded_again = base64_encode($decoded); // encode again
$sqlupdate = “UPDATE wp_masterslider_sliders SET params = ‘”.$encoded_again.”‘ WHERE ID = ” .$slider[“ID”];
$result_b = mysqli_query($con,$sqlupdate) ;
}
?>
