PHP foreach from array - php

Question

I am using an api to show a list of times but struggling to display them in using foreach
Here is how the data is shown:
stdClass Object
(
[id] => 2507525
[snapshotTimes] => Array
(
[0] => 2020-10-02T04:04:41+00:00
[1] => 2020-10-03T03:22:29+00:00
[2] => 2020-10-04T03:06:43+00:00
[3] => 2020-10-04T21:18:11+00:00
[4] => 2020-10-06T03:07:12+00:00
[5] => 2020-10-07T03:21:31+00:00
[6] => 2020-10-10T03:43:00+00:00
[7] => 2020-10-17T02:58:49+00:00
[8] => 2020-10-19T02:57:35+00:00
[9] => 2020-10-23T03:08:28+00:00
[10] => 2020-10-26T04:02:51+00:00
[11] => 2020-10-27T04:33:19+00:00
)
)
Code:
$domainArray = $services_api->getWithFields("/package/2507525/web/timelineBackup/web");
foreach ($domainArray as $arr) {
$Time = $arr->$domainArray->snapshotTimes;
echo " TIME: $Time<br>";
}
But it doesn't seem to echo anything at all? Where am I going wrong?

Answer 1

Your code shows;
$Time = $arr->$domainArray->snapshotTimes;
Here you're tying to access a property called domainArray on the array given by the foreach(). No need to do that since your already using the foreach() to loop over the data;
$domainArray = $services_api->getWithFields("/package/2507525/web/timelineBackup/web");
// For each item in the 'snapshotTimes' array
foreach ($domainArray->snapshotTimes ?? [] as $time) {
echo " TIME: {$time}<br>";
}
Try it online!
Note: Using the null coalescing operator (?? []) to ensure snapshotTimes exists in the data.
Based on comments; the same solution but with array_reverse() to reverse the output.
foreach (array_reverse($domainArray->snapshotTimes) as $time) {
....
Try it online!

Answer 2

You are triying to print snapshotTimes but you created a loop for another thing. If you want to print snapshotTimes code will be like :
foreach($arr->$domainArray->snapshotTimes as $time){
echo $time."</br>";
}

Answer 3

snapshotTimes is an array, but you are treating it as if it was a string. you should probably run another inner foreach to cycle through all values within snapshotTimes . Check your PHP Error log.
Perhaps an example would help him #Martin?
Example:
$domainArray = $services_api->getWithFields("/package/2507525/web/timelineBackup/web");
foreach ($domainArray as $arr) {
if(is_array($arr->snapshotTimes) && count($arr->snapshotTimes) > 0 ){
$times = $arr->snapshotTimes;
foreach($times as $timeRow){
echo " TIME: ".$timeRow."<br>";
}
unset($times); //tidy up temp vars.
}
}
I underline the point that you need to check your PHP Error Log to help you diagnose these sort of structure issues.
Notes:
Your reference $arr->$domainArray->snapshotTimes within the foreach is incorrect, you're referencing both the foreach label as well as the source of the foreach label, which will result in an error.
PHP variables should start with a lower case letter.
If you don't need $domainArray => $arr for any other reason within the foreach loop, you can simplify the loop by looping the array rather than the container, as 0stone0 shows on their answer.