Associative array replace

Question

These arrays contains same keys simple like follow topic (prop is unique): Check if associative array contains value, and retrieve key / position in array

<?php
$array = array(
array("prop" => "1", "content" => "text"),
array("prop" => "2", "content" => "text"),
array("prop" => "3", "content" => "text"),
array("prop" => "4", "content" => "text")
);
$found = current(array_filter($array, function($item) {
  return isset($item['prop']) && 3 == $item['prop'];
}));
print_r($found);

I got prop 3:

Array
(
  [prop] => 3
  [content] => text
)

So I want to replace value in $array with:

array("prop" => "3", "content" => "replaced text")

array("prop" => "3", "content" => "replaced text") in $array — trulex
– trulex, Commented Feb 20, 2018 at 21:59

AbraCadaver · Accepted Answer · 2018-02-20 22:17:59Z

3

Since prop is unique, just extract the arrays using prop as the index and then access it that way:

$array = array_column($array, null, 'prop');
$array[3]['content'] = 'replaced text';

You might want to use an isset to make sure $array[3]['content'] exists.

edited Feb 20, 2018 at 22:17

answered Feb 20, 2018 at 22:06

AbraCadaver

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2 Comments

Anthony Over a year ago

Technically shouldn't the OP access the value as $array['3']['content'], since "prop" is a string in the original array? I believe accessing it by an integer could cause issues between array position and array key name.

AbraCadaver Over a year ago

@Anthony: PHP creates integer keys from strings containing only integers var_dump(["1"=>"hello", "a"=>"hello"]);

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