如何将前导子字符串移动到字符串的末尾？

Question

How can I cut part of string before some word put on the end of the same string?

For example:

$data = '1.jpg,2.jpg,3.jpg,4.jpg,5.jpg,6.jpg,7.jpg,';

I want to put all before 4.jpg, at the end of string like this:

$data = '4.jpg,5.jpg,6.jpg,7.jpg,1.jpg,2.jpg,3.jpg,';

Answer 1

Here's something you can try.

<?php

$data = '1.jpg,2.jpg,3.jpg,4.jpg,5.jpg,6.jpg,7.jpg,';
$cut_name = '4.jpg'; //splice from #4


$data = explode(',', $data);
$cut_from = array_search($cut_name, $data);
array_pop($data);

$removed = array_splice($data, 0, $cut_from);

$data = implode(',', array_merge($data, $removed));

echo $data . ',';