如何将值附加到PHP中的数组中的数组？ [重复]

Question

This question already has an answer here:

• How to add elements to an empty array in PHP? 7 answers

Given this PHP array:

$options['systems'] = array(1, 2, 3)

How would I append the value 4 to the $systems array within the $options array?

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Answer 1

You could use array_push to push additional items like so:

array_push($options['systems'], 4);

Or the shorthand version:

$options['systems'][] = 4;