CODEWITHSUNDEEP
php
Francisco José Oviedo Juárez
Francisco José Oviedo Juárez

Reputation: 52

PHP Associative Array use variable as a key

I want to "map" values obtained from an excel file.

If $row['type'] contained 'TYPE ONE' I would expect to get 'value-one'. But instead, I get an error.

I don't know if that's just not how associative arrays work in PHP.

$arrType = [
  'TYPE ONE' => 'value-one',
  'TYPE TWO' => 'value-two',
];
$key = $row['type'];

echo $arrType[$key]; //Error Undefined index: TYPE ONE

If I manually assign the string value... it works...

$arrType = [
  'TYPE ONE' => 'value-one',
  'TYPE TWO' => 'value-two',
];
$key = 'TYPE ONE';

echo $arrType[$key]; //value-one

EDIT 27 Aug 2021 It works on production. For the time, we will leave it like that... We think the problem is excel encoding or something...

EDIT 14 Sep 2021 It was an issue with special characters. It worked on production but still, some regex was used to remove them.

$type = preg_replace('/[^a-zA-Z ]/', '', implode(str_split($arrType[$key])));

echo $arrType[$type]; //Expected value

Upvotes: 1

Views: 947

Answers (2)

Francisco José Oviedo Juárez
Francisco José Oviedo Juárez

Reputation: 52

It was an issue with special characters. It worked on production but still, some regex was used to remove them.

$type = preg_replace('/[^a-zA-Z ]/', '', implode(str_split($arrType[$key])));

echo $arrType[$type]; //Expected value

Upvotes: 0

GUEST
GUEST

Reputation: 11

Something to consider

    $row = [
    'TYPE'=>'TYPE TWO',
    'type'=>'TYPE ONE ' //possible spaces -- use trim()
    ];

    $arrType = [
        'TYPE ONE' => 'value-one',
        'TYPE TWO' => 'value-two',
    ];

    $key = $row['type'];
    echo $arrType[$key]; //Notice: Undefined index: TYPE ONE

    $key = trim($row['type']);
    echo $arrType[$key]; //value-one

Upvotes: 1

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