Fast implementation: Convert two-dimensional arrays to one-dimensional arrays _php tutorial

How to convert the following two-dimensional array to a one-dimensional array.

$msg = Array (

Array

' id ' = ' 45 ',

' Name ' = ' Jack '

),

Array

' id ' = ' 34 ',

' Name ' = ' Mary '

),

Array

' id ' = ' 78 ',

' Name ' = ' Lili '

),

);

1 Solution: foreach ($msg as $k = = $v) {

$ids [] = $id;

$names [] = $name;

}

2 Solution: $ids = Array_column ($msg, ' id ');

$names = Array_column ($msg, ' name ');

The above two methods Print_r ($names), the result is:

Array (

[0]=>jack

[1]=>mary

[2]=>lili

)

Note: Array_column (); can have a third parameter, such as $n = Array_column ($msg, ' name ', ' id ');

Print_r ($n); The result is:

Array (

[45]=>jack

[34]=>mary

[78]=>lili

)

Reference:array array_column ( array $array , Mixed [ $column_key , mixed $index_key = null ])

http://www.bkjia.com/PHPjc/776510.html www.bkjia.com true http://www.bkjia.com/PHPjc/776510.html techarticle How to convert the following two-dimensional array to a one-dimensional array. $msg = array (' id ' = ' $ ', ' name ' = ' Jack '), array (' id ' = ' ' ", ' name ' = ' Mary '), array (' id ' = ' + ', ' name ' = ' Lili '),); 1 Solution: ...

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