如何跳过foreach里面的foreach迭代

Question

I have an array of values, and i want to insert the values to another array but with an if condition, if the "if" is true I want to skip the iteration.

Code:

$array=array(array(1=>11,2=>22,3=>23,4=>44,5=>55));
$insert=array();
foreach($array as $k1=>$v1)
{
foreach($v1 as $k2=>$v2)
{
    if($v2==23)
    {
        break; 
    }
}
    $insert[]=$v1;
}

final result should look like that

Array
(
[0] => Array
    (
        [1] => 11
        [2] => 22
        [3] => 44
        [4] => 55
    )
)   

I tried using: break,return,continue...

Thanks

Answer 1

There are a few ways to do this. You can loop over the outer array and use array_filter on the inner array to remove where the value is 23 like this (IMO preferred; this also uses an array of $dontWant numbers so it is easier to add or change numbers later):

<?php
$array = array(array(1=>11,2=>22,3=>23,4=>44,5=>55));
$insert = array();

//array of numbers you don't want
$dontWant = array(23);

//loop over outer array    
foreach($array as $subArray){
    //add to $insert a filtered array
    //subArray is filtered to remove where value is in $dontWant
    $insert[] = array_filter($subArray, function($val) uses ($dontWant) {
        //returns true if the value is not in the array of numbers we dont want
        return !in_array($val, $dontWant);
    });
}
//display final array    
echo '<pre>'.print_r($insert,1).'</pre>';

Or you can reference the first key to add to a sub array in $insert like (which is a little more like what your code is trying to do and show that you are not too far off):

<?php
$array = array(array(1=>11,2=>22,3=>23,4=>44,5=>55));
$insert = array();
//loop over outer array    
foreach($array as $k1=>$v1){
    //add an empty array to $insert
    $insert[$k1] = array();

    //loop over inner array
    foreach($v1 as $k2=>$v2){
        //if the inner array value is not 23
        if($v2 != 23){
            //add to inner array in insert
            $insert[$k1][] = $v2;
        }
    }
}
//display the result    
echo '<pre>'.print_r($insert,1).'</pre>';

Both of these methods would produce the same result. IMO using array_filter is the preferred method, but the second method might be a little easier to understand for someone new to programming.