Online PHP editor | output for e6V3Y

@ 2018-02-16T17:45:01Z

<?php
$array=[
    ['day'=>'11','movements'=>'1'],
    ['day'=>'11','movements'=>'1'],
    ['day'=>'11','movements'=>'1'],
    ['day'=>'12','movements'=>'1'],
    ['day'=>'12','movements'=>'1'],
    ['day'=>'12','movements'=>'1']
];
foreach($array as $row){  // iterate all rows
    if(!isset($result[$row['day']])){  // if first occurrence of day...
        $result[$row['day']]=$row;     // save the full row with day as the temporary key
    }else{                                    // if not the first occurrence of day...
        $result[$row['day']]['movements']+=$row['movements'];  // add movements value
    }
}
var_export(array_values($result));

Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 ( 'day' => '11', 'movements' => 3, ), 1 => array ( 'day' => '12', 'movements' => 3, ), )
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 ( 'day' => '11', 'movements' => 3, ), 1 => array ( 'day' => '12', 'movements' => 3, ), )

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