php - Ensure order in for loop involving json_decode() -

i'm using json_decode parse json files. in loop, attempt capture specific cases in json in 1 element or exist. i've implemented function seems fit needs, find need use 2 loops catch both of cases.

i rather use single loop, if that's possible, i'm stuck on how both cases caught in single pass. here's mockup of result like:

<?php function extract($thisfile){     $test = implode("", file($thisfile));     $obj = json_decode($test, true);      ($i = 0; $i <= sizeof($obj['patcher']['boxes']); $i ++) {         //this found 2nd         if ($obj['patcher']['boxes'][$i]['box']['name'] == "mystring1") {         }          //this found 1st         if ($obj['patcher']['boxes'][$i]['box']['name'] == "mystring2") {         }     }     } ?> 

can tell me how catch both cases outlined above within single iteration? not

if ($obj['patcher']['boxes'][$i]['box']['name'] == "string1" && $obj['patcher']['boxes'][$i]['box']['name'] == "string2") {} 

...because condition never met.

generally when have raw data in order isn't ideal work run first loop pass generate a list of indexes me pass through second time. quick example code:

<?php function extract($thisfile){     $test = implode("", file($thisfile));     $obj = json_decode($test, true);      $index_mystring2 = array(); //your list of indexes second condition      //1st loop.     $box_name;     ($i = 0; $i <= sizeof($obj['patcher']['boxes']); $i ++) {         $box_name = $obj['patcher']['boxes'][$i]['box']['name'];          if ( $box_name == "mystring1") {              //do code here condition 1         }          if ($box_name == "mystring2") {            //we push index onto array later loop.            array_push($index_mystring2, $i);          }     }      //2nd loop     for($j=0; $j<=sizeof($index_mystring2); $j++) {       //your code here. note $obj['patcher']['boxes'][$j]       // refer data in decoded json tree     } } ?> 

granted can in more generic ways it's cleaner (ie, generate both first , second conditions indexes) think idea :)