<?php
$array = Array
(
Array
(
'sexo_edad' => 'type1',
'fans' => 2
),
Array
(
'sexo_edad' => 'type2',
'fans' => 3
),
Array
(
'sexo_edad' => 'type1',
'fans' => 8
),
Array
(
'sexo_edad' => 'type2',
'fans' => 10
)
);
$type_values = array();
foreach ($array as &$arr) {
if (isset($type_values[$arr['sexo_edad']])) {
$arr['difference'] = $arr['fans'] - $type_values[$arr['sexo_edad']];
}
else {
$arr['difference'] = 0;
}
$type_values[$arr['sexo_edad']] = $arr['fans'];
}
print_r($array);
- Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
- Array
(
[0] => Array
(
[sexo_edad] => type1
[fans] => 2
[difference] => 0
)
[1] => Array
(
[sexo_edad] => type2
[fans] => 3
[difference] => 0
)
[2] => Array
(
[sexo_edad] => type1
[fans] => 8
[difference] => 6
)
[3] => Array
(
[sexo_edad] => type2
[fans] => 10
[difference] => 7
)
)
- Output for 8.3.5
- Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Array
(
[0] => Array
(
[sexo_edad] => type1
[fans] => 2
[difference] => 0
)
[1] => Array
(
[sexo_edad] => type2
[fans] => 3
[difference] => 0
)
[2] => Array
(
[sexo_edad] => type1
[fans] => 8
[difference] => 6
)
[3] => Array
(
[sexo_edad] => type2
[fans] => 10
[difference] => 7
)
)
preferences:
198.89 ms | 403 KiB | 212 Q