- array_combine: documentation ( source)
- print_r: documentation ( source)
<?php
$array = array(
0 => array('name'=>'Peter1'),
1 => array('name'=>'Peter2'),
2 => array('name'=>'Peter3'),
3 => array('name'=>'Peter4'),
4 => array('name'=>'Peter5')
);
print_r(array_combine($array, 'name'));