导致php foreach循环终止的原因是什么？

I have been having problems on one of my foreach loops where PART of the loop terminates after just one iteration, with no output or error.

After searching the web for answers, I still don't know any possible causes for this issue (and the code is too large to be useful to the community...)

Therefore my question is, "what are the possible causes for a foreach loop to terminate after just one iteration?" (assuming more iterations are required)

There are multiple ways to stop a foreach loop. Here are a few examples:

<?php
$range = range(1,10);

// continue;
foreach($range as $r){
    if($r!=1){
        continue;
    }
    echo $r.'<br>';
}

// break;
foreach($range as $r){
    if($r>1){
        break;
    }
    echo $r.'<br>';
}

// die;
foreach($range as $r){
    if($r>1){
        die;
    }
}

Note: continue will not break out of the foreach loop, but can cause data rows to be "skipped"

It works only on arrays and objects, and will issue an error when you try to use it on a variable with a different data type or an uninitialized variable.

I think that you should have to follow this link http://php.net/manual/en/control-structures.foreach.php for better knowledge about foreach loop.