Online PHP editor | output for hH79U

@ 2018-10-13T14:48:35Z

<?php
$array = [
    ["foo" => "bar1", "hey" => "now"],
    ["foo" => "bar2", "hey" => "what"],
    [0 => "zero", 1 => "one"]
];

var_export(array_column($array, 'foo'));  // get the column by name
echo "\n---\n";
var_export(array_column($array, 0));  // don't need to be a string
echo "\n---\n";
var_export(array_column($array, key(current($array))));  // access the first subarray, access its key
echo "\n---\n";
var_export(array_column($array, array_shift(array_keys($array))));

Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14: array ( 0 => 'bar1', 1 => 'bar2', ) --- array ( 0 => 'zero', ) --- array ( 0 => 'bar1', 1 => 'bar2', ) --- Notice: Only variables should be passed by reference in /in/hH79U on line 14 array ( 0 => 'zero', )
Output for 7.3.32 - 7.3.33: array ( 0 => 'bar1', 1 => 'bar2', ) --- array ( 0 => 'zero', ) --- array ( 0 => 'bar1', 1 => 'bar2', ) --- array ( 0 => 'zero', )
Output for 5.6.38: array ( 0 => 'bar1', 1 => 'bar2', ) --- array ( 0 => 'zero', ) --- array ( 0 => 'bar1', 1 => 'bar2', ) --- Strict Standards: Only variables should be passed by reference in /in/hH79U on line 14 array ( 0 => 'zero', )

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