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']
精彩评论