Ersetze Null durch leeren String-Wert in mehrdimensionalen Array. Php

Question

Ich habe ein multidimensionales Array mit Null-Schlüssel-Wert. Wie man Null zu leerer Zeichenkette im mehrdimensionalen Array php ersetzt? mein Array ist

"result": [ 
    { 
     "id": "1", 
     "first_name": "Kishan", 
     "last_name": "Patel", 
     "profile_picture": null, 
     "email": "imkishanpatel107@gmail.com", 
     "birthdate": "1992-07-10", 
     "gender": "male", 
     "nickname": "KK", 
     "town": null, 
     "state": "58", 
     "bio": "123", 
     "zipcode": "395006", 
     "radius": "12356", 
     "favroiteteam": "2", 
     "latitude": "1.25456", 
     "longitude": "4.5658787", 
     "message_enable": "0", 
     "ratting_enable": "0", 
     "add_friend_enable": "0", 
     "interested_in": null, 
     "user_sport": [ 
     { 
      "sport": { 
      "id": "3", 
      "name": "Basketball", 
      "image": "", 
      "no_of_player": "9", 
      "is_active": "1" 
      }, 
      "sportPosition": { 
      "id": "1", 
      "sport_id": "3", 
      "position_name": "Point Guard" 
      }, 
      "skill_level": { 
      "id": "1", 
      "name": "Novice" 
      } 
     }, 
     { 
      "sport": { 
      "id": "2", 
      "name": "Baseball", 
      "image": "", 
      "no_of_player": "10", 
      "is_active": "1" 
      }, 
      "sportPosition": { 
      "id": "6", 
      "sport_id": "2", 
      "position_name": "Pitcher" 
      }, 
      "skill_level": { 
      "id": "3", 
      "name": "Advanced" 
      } 
     }, 
     { 
      "sport": { 
      "id": "8", 
      "name": "Roller Hockey", 
      "image": "", 
      "no_of_player": "0", 
      "is_active": "1" 
      }, 
      "sportPosition": { 
      "id": "15", 
      "sport_id": "8", 
      "position_name": "Forward" 
      }, 
      "skill_level": { 
      "id": "1", 
      "name": "Novice" 
      } 
     } 
     ] 
    } 
    ] 

Answer 1

einfach eine Schleife setzen und prüfen, ob null mit foreach

foreach ($array as $key => $value) { 
    if (is_null($value)) $array[$key] = ""; 
} 

Answer 2

@Kishan Kikani Sie nicht auf ‚Null ersetzen können‘, weil beide als leeren Wert der Ansicht, dass in der Ausgabe Ihres Array wird es an der Stelle von null leeren Wert oder ‚‘ Sie etwas zuweisen haben Ihren Wert in oben Array zu ersetzen, wie unten Sie beides haben (Ihr und mir) Sie tun können:

<?php 
$result = array("result"=> 
       array(
        "id"=> "1", 
        "first_name"=> "Kishan", 
        "last_name"=> "Patel", 
        "profile_picture"=> null, 
        "email"=> "imkishanpatel107@gmail.com", 
        "birthdate"=> "1992-07-10", 
        "gender"=> "male", 
        "nickname"=> "KK", 
        "town"=> null, 
        "state"=> "58", 
        "bio"=> "123", 
        "zipcode"=> "395006", 
        "radius"=> "12356", 
        "favroiteteam"=> "2", 
        "latitude"=> "1.25456", 
        "longitude"=> "4.5658787", 
        "message_enable"=> "0", 
        "ratting_enable"=> "0", 
        "add_friend_enable"=> "0", 
        "interested_in"=> null, 
        "user_sport"=> 
        array(
         "sport"=> array(
         "id"=> "3", 
         "name"=> "Basketball", 
         "image"=> "", 
         "no_of_player"=> "9", 
         "is_active"=> "1" 
        ), 
         "sportPosition"=> array(
         "id"=> "1", 
         "sport_id"=> "3", 
         "position_name"=> "Point Guard" 
        ), 
         "skill_level"=> array(
         "id"=> "1", 
         "name"=> "Novice" 
        ) 
        ), 
        array(
         "sport"=> array(
         "id"=> "2", 
         "name"=> "Baseball", 
         "image"=> "", 
         "no_of_player"=> "10", 
         "is_active"=> "1" 
        ), 
         "sportPosition"=> array(
         "id"=> "6", 
         "sport_id"=> "2", 
         "position_name"=> "Pitcher" 
        ), 
         "skill_level"=> array(
         "id"=> "3", 
         "name"=> "Advanced" 
        ) 
        ), 
        array(
         "sport"=> array(
         "id"=> "8", 
         "name"=> "Roller Hockey", 
         "image"=> "", 
         "no_of_player"=> "0", 
         "is_active"=> "1" 
        ), 
         "sportPosition"=> array(
         "id"=> "15", 
         "sport_id"=> "8", 
         "position_name"=> "Forward" 
        ), 
         "skill_level"=> array(
         "id"=> "1", 
         "name"=> "Novice" 
        ) 
        ) 
       ) 
      ); 
echo "<pre>"; 
print_r($result); // BEFORE 


foreach($result as $rsKey => $rs){ 
    foreach($rs as $key => $value){ 
     if(is_null($value)){ 
      $result[$rsKey][$key] = ""; 
     } 
    } 
} 
echo "<pre>"; 
print_r($result); // after replace only null to "" but there will be a empty space in the values 



foreach($result as $rsKey => $rs){ 
    foreach($rs as $key => $value){ 
     if(is_array($value)){ 
      foreach ($value as $k => $v) { 
       foreach ($v as $k1 => $v1) { 
        if(empty($v1)){ 
         $result[$rsKey][$key][$k][$k1] = "level2"; 
        } 
       } 
      } 
     } 
     else{ 
      if(is_null($value)){ 
       $result[$rsKey][$key] = "level1"; 
      } 
     } 
    } 
} 
echo "<pre>"; 
print_r($result); // after replace whole array empty values 

try jeder von Ihnen (y)

Answer 3

$arr = array(
      "key1"=>"value1", 
      "key2"=>null, 
      "key3"=>array(
       "subkey1"=>null, 
       "subkey2"=>"subvalue2"), 
      "key4"=>null); 

    echo json_encode(replace_null_with_empty_string($arr)); 

    function replace_null_with_empty_string($array) 
    { 
     foreach ($array as $key => $value) 
     { 
      if(is_array($value)) 
       $array[$key] = replace_null_with_empty_string($value); 
      else 
      { 
       if (is_null($value)) 
        $array[$key] = ""; 
      } 
     } 
     return $array; 
    }