CODEWITHSUNDEEP
phpif-statement
Matt Elhotiby
Matt Elhotiby

Reputation: 44086

what if the index doesnt exist

I have this if statement

<?php if(in_array($product['product_id'], $selected_products['business'])) { ?>

but sometimes the array $selected_products doesnt have the index business .. how can i alter the if condition without have an outer if statement

Upvotes: 0

Views: 88

Answers (4)

Gumbo
Gumbo

Reputation: 655707

Use the logical AND operator && to combine both expressions:

if (array_key_exists('business', $selected_products) && in_array($product['product_id'], $selected_products['business']))

Upvotes: 2

James C
James C

Reputation: 14159

You could use a ternary statement, that line will be a bit busy though:

<?php if(in_array($product['product_id'], isset($selected_products['business']) ? $selected_products['business'] : false))) { ?>

Upvotes: 1

Byron Whitlock
Byron Whitlock

Reputation: 53921

Short circuit isset using the && operator. With short circuit evaluation, the second expression isn't evaluated if the first one fails.

<?php if(isset( $selected_products['business']) && in_array($product['product_id'], $selected_products['business'])) { ?>

Upvotes: 3

BoltClock
BoltClock

Reputation: 724402

It depends on what you want to do if the index doesn't exist.

If you only want to perform this check if the index is there, add an isset() check before it (line break for clarity):

if (isset($selected_products['business'])
    && in_array($product['product_id'], $selected_products['business'])) {

Additionally, if you need to do something else in the event the index isn't there, attach an else block.

Upvotes: 3

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