- unserialize: documentation ( source)
- serialize: documentation ( source)
<?php
$a=unserialize('a:1:{i:0;a:2:{s:11:"institut_id";s:9:"870500001";s:4:"name";s:12:"SPK Chemnitz";}}');
$a[] = array('institut_id'=>"870520001",'name'=>'SPK Mittelsachsen');
print serialize($a);