Filter & Convert an Array into String using PHP

Question

How can I turn this array:

print_r($arr)

Array (
    [131] => stdClass Object
        (
            [tid] => 131
            [vid] => 9
            [name] => apple
            [description] => 
            [weight] => 0
        )

    [112] => stdClass Object
        (
            [tid] => 112
            [vid] => 9
            [name] => cool
            [description] => 
            [weight] => 0
        )

    [113] => stdClass Object
        (
            [tid] => 113
            [vid] => 9
            [name] => wonderful
            [description] => 
            [weight] => 0
        )

)

into this:

apple cool wonderful

Basically take out the "name" variable of the array and implode it in order. I tried implode, but I don't know how to only reference to the "name" variables.

runfalk · Accepted Answer · 2010-02-17 22:39:27Z

2

echo join(" ", array_map(create_function('$x', 'return $x->name;'), $arr));

Is one way of doing it

edited Feb 17, 2010 at 22:39

answered Feb 17, 2010 at 18:34

runfalk

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5 Comments

tim Over a year ago

for some reason I can't get this to work... I'm trying to figure it out

tim Over a year ago

it doesn't work, because the "name" is under a number. $arr->##["name"]. And that number can be any number, like $arr->131["name"], $arr->113["name"]... you cannot refrence to it like $arr->name or $arr["name"]

ceejayoz Over a year ago

That's the whole point of array_map - it's turning each term into $x for easier access. Please check the documentation on these functions before dismissing them.

tim Over a year ago

I guess what I'm trying to say is - I'm trying to get past the "object", number 131, 112, 113, etc... and pull out the name from the object. I'm probably not making sense because of my lack of vocabulary... basically the arrays are stored under the objects, and I need to pull the "name" variable in the array, while I don't know that object name (object 131, 112, 113, etc...)

tim Over a year ago

I found an error on my side, after fixing it, I'm getting the following error: Fatal error: Cannot use object of type stdClass as array in filename.php

ceejayoz · Accepted Answer · 2010-02-17 20:29:53Z

0

$terms = array();
foreach($arr as $term) { $terms[] = $term->name; }
print implode($terms, ', ');

edited Feb 17, 2010 at 20:29

answered Feb 17, 2010 at 18:50

ceejayoz

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8 Comments

tim Over a year ago

I got this error Fatal error: [] operator not supported for strings. I'm using drupal.

ceejayoz Over a year ago

Sounds like there's an existing $terms variable. Change $terms to a different variable name, or do $terms = array(); before this code.

tim Over a year ago

The array() think helps pass the error, but I get a blank result. I think this statement is referencing to $arr->name, when it should reference to $arr->anynumber['name']

ceejayoz Over a year ago

Nope. foreach steps through each item in $arr and turns it into $term, so $term->name is the correct notation. Try print_r ing $term to check.

tim Over a year ago

print_r ing $term gave me the same results as $arr. print_r ing $terms gave me Array ( [0] => )

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