Merging duplicate values into multi-dimensional array in PHP
To merge duplicate values into multi-dimensional array in PHP, the code is as follows −
Example
Live Demo
<?php
$my_arr = array(
array('Age'=>23, 'name'=>'Joe', 'hobby'=>'Cycling'),
array('Age'=>26, 'name'=>'Hannah', 'hobby'=>'Rowing'),
array('Age'=>30, 'name'=>'Dev', 'hobby'=>'Cycling'),
array('Age'=>30, 'name'=>'Dev', 'hobby'=>'Cycling')
);
foreach($my_arr as $entry => $vals)
{
$new_vals[$vals['hobby']][]=$vals;
}
echo "The unique array elements are ";
print_r($new_vals);
?>Output
The unique array elements are Array
(
[Cycling] => Array
(
[0] => Array
(
[Age] => 23
[name] => Joe
[hobby] => Cycling
)
[1] => Array
(
[Age] => 30
[name] => Dev
[hobby] => Cycling
)
[2] => Array
(
[Age] => 30
[name] => Dev
[hobby] => Cycling
)
)
[Rowing] => Array
(
[0] => Array
(
[Age] => 26
[name] => Hannah
[hobby] => Rowing
)
)
)
An array of values is defined that maps age, name and hobby to certain values. The ‘foreach’ loop is used to iterate over the array values and a new value is assigned to one of the entries in the array. The value that was previously duplicate will now be merged into a single entry, thereby avoiding storage of duplicate values.
Published on 01-Jul-2020 10:56:50
