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Alternative to foreach() PHP?

开发者 https://www.devze.com 2023-03-25 06:27 出处:网络
I am still very new to PHP and from all the examples that are around they all seem to use foreach statements.

I am still very new to PHP and from all the examples that are around they all seem to use foreach statements.

e.g.

foreach ($variable as $row)

However I don't think I should be using this all the time, for example variables or objects I have an which only has one row or instance in an array.

I know its advantageous to use them for multiple rows which could be missed if you used a for loop.

But do I really need to use it just to echo one variable thats in an array?

e.g. for example this variable $开发者_StackOverflowstats

array(3) { ["user_interventions"]=> int(4) ["fastest_intervention"]=> array(1) { [0]=> object(stdClass)#22 (1) { ["duration"]=> string(8) "02:10:00" } } ["slowest_intervention"]=> array(1) { [0]=> object(stdClass)#23 (1) { ["duration"]=> string(8) "02:26:00" } } } 

Thanks


if you know the 'address' of the value in your array, then there's no need for a loop:

echo $arr['user_interventions'][0]['duration']; // 02:10:00

More details here.


No, you do not need to use a foreach loop every time you need to access an array value. Your example could be used in the following manner...

echo $stats['fastest_intervention']['0']->duration; // Outputs: 02:10:00

Here's your variable dump with indentation (makes it easier to read).

array(3) {
    ["user_interventions"]=> int(4)
    ["fastest_intervention"]=> array(1) {
        [0]=> object(stdClass)#22 (1) {
            ["duration"]=> string(8) "02:10:00"
        }
    }
    ["slowest_intervention"]=> array(1) {
        [0]=> object(stdClass)#23 (1) {
            ["duration"]=> string(8) "02:26:00"
        }
    }
} 


You need not to use foreach here but you can't just print $array

if you indexes of array you may print something like:

print 'Key is '.$array['key'].' but index is only'.$array['index'];


You just access the variables using []. print $array['key']

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