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PHP array deduplication function code example

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Release： 2016-07-25 08:55:36

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/**
* Function to remove duplicate values from array
* by bbs.it-home.org
*/
function array_assoc_unique($arr, $key) {
$tmp_arr = array();
foreach($arr as $k => $v) {
if(in_array($v[$key], $tmp_arr)) {
unset($arr[$k]);
} else {
$tmp_arr[] = $v[$key ];
}
}
sort($arr);
return $arr;
}
//Call the example to remove duplicate values in the data
$aa = array(
array('id ' => 123, 'name' => 'Scripting School'),
array('id' => 123, 'name' => 'php programming'),
array('id' => 124, 'name' => 'Programmer's Home'),
array('id' => 125, 'name' => 'Self-taught'),
array('id' => 126, 'name' => 'Programmer's Home')
);
$key = 'name';
array_assoc_unique(&$aa, $key);
print_r($aa);
?>

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source：php.cn

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