array_column(3) [php man page]

ARRAY_COLUMN(3) 							 1							   ARRAY_COLUMN(3)

array_column - Return the values from a single column in the input array

SYNOPSIS

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

DESCRIPTION

       array_column(3)	returns  the  values  from  a  single  column of the $array, identified by the $column_key. Optionally, you may provide an
       $index_key to index the values in the returned array by the values from the $index_key column in the input array.

PARAMETERS

	      o $array
		- A multi-dimensional array (record set) from which to pull a column of values.

	      o $column_key
		- The column of values to return. This value may be the integer key of the column you wish to retrieve, or it may  be  the  string
		key  name  for an associative array. It may also be NULL to return complete arrays (useful together with $index_key to reindex the
		array).

	      o $index_key
		- The column to use as the index/keys for the returned array. This value may be the integer key of the column, or it  may  be  the
		string key name.

RETURN VALUES

	Returns an array of values representing a single column from the input array.

EXAMPLES

       Example #1

	      Get column of first names from recordset

	      <?php
	      // Array representing a possible record set returned from a database
	      $records = array(
		  array(
		      'id' => 2135,
		      'first_name' => 'John',
		      'last_name' => 'Doe',
		  ),
		  array(
		      'id' => 3245,
		      'first_name' => 'Sally',
		      'last_name' => 'Smith',
		  ),
		  array(
		      'id' => 5342,
		      'first_name' => 'Jane',
		      'last_name' => 'Jones',
		  ),
		  array(
		      'id' => 5623,
		      'first_name' => 'Peter',
		      'last_name' => 'Doe',
		  )
	      );

	      $first_names = array_column($records, 'first_name');
	      print_r($first_names);
	      ?>

	      The above example will output:

	      Array
	      (
		  [0] => John
		  [1] => Sally
		  [2] => Jane
		  [3] => Peter
	      )

       Example #2

	       Get column of last names from recordset, indexed by the "id" column

	      <?php
	      // Using the $records array from Example #1
	      $last_names = array_column($records, 'last_name', 'id');
	      print_r($last_names);
	      ?>

	      The above example will output:

	      Array
	      (
		  [2135] => Doe
		  [3245] => Smith
		  [5342] => Jones
		  [5623] => Doe
	      )

PHP Documentation Group 													   ARRAY_COLUMN(3)

Check Out this Related Man Page

ARRAY_INTERSECT_ASSOC(3)						 1						  ARRAY_INTERSECT_ASSOC(3)

array_intersect_assoc - Computes the intersection of arrays with additional index check

SYNOPSIS

       array array_intersect_assoc (array  $array1, array  $array2, [array  $...])

DESCRIPTION

       array_intersect_assoc(3)  returns  an  array containing all the values of $array1 that are present in all the arguments. Note that the keys
       are used in the comparison unlike in array_intersect(3).

PARAMETERS

	      o $array1
		- The array with master values to check.

	      o $array2
		- An array to compare values against.

	      o $...
		- A variable list of arrays to compare.

RETURN VALUES

	Returns an associative array containing all the values in $array1 that are present in all of the arguments.

EXAMPLES

       Example #1

	      array_intersect_assoc(3) example

	      <?php
	      $array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
	      $array2 = array("a" => "green", "b" => "yellow", "blue", "red");
	      $result_array = array_intersect_assoc($array1, $array2);
	      print_r($result_array);
	      ?>

	      The above example will output:

	      Array
	      (
		  [a] => green
	      )

	In our example you see that only the pair "a" => "green" is present in both arrays and thus is returned. The value "red" is  not  returned
       because in $array1 its key is 0 while the key of "red" in $array2 is 1, and the key "b" is not returned because its values are different in
       each array.

	The two values from the key => value pairs are considered equal only if (string) $elem1 === (string) $elem2 . In other words a strict type
       check is executed so the string representation must be the same.

SEE ALSO 
array_intersect(3), array_uintersect_assoc(3), array_intersect_uassoc(3), array_uintersect_uassoc(3), array_diff(3), array_diff_assoc(3).

PHP Documentation Group 												  ARRAY_INTERSECT_ASSOC(3)

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array_column(3) [php man page]

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