I'm trying to delete an item from json file using id property match.
What is actually the unset i need?
Json data:
{"memory":[{"id":1,"pinned":false,"title":"my title","author":"me"},
{"id":2,"pinned":false,"title":"my title","author":"me"}]}
$projectsArr = json_decode(file_get_contents("../db/memory.json"), true);
if(isset($_POST['subDelete'])) {
$selectedIitemId = $_POST["subDelete"];
foreach($projectsArr['memory'] as &$mydata) {
if($mydata['id'] == $selectedIitemId) {
// unset ?
$save = json_encode($projectsArr,JSON_UNESCAPED_UNICODE);
file_put_contents('../db/memory.json', $save);
header('LOCATION:approve.php');
}
}
}
This code uses the index of the entry that matches and uses unset() from the array itself ($projectsArr['memory']). Also as this then leaves an array with missing entries (which will cause it to save as an object) it uses array_values() to reset the keys before saving the data.
foreach($projectsArr['memory'] as $key => $mydata) {
if($mydata['id'] == $selectedIitemId) {
unset($projectsArr['memory'][$key]);
$projectsArr['memory'] = array_values($projectsArr['memory']);
$save = json_encode($projectsArr,JSON_UNESCAPED_UNICODE);
file_put_contents('../db/memory.json', $save);
header('LOCATION:approve.php');
exit;
}
}
Good day, I am trying to convert an array "$list" into string or object. I have used following methods:
<?php
include "medclass.php";
session_start();
if (isset($_SESSION['mail']))
{
$list = $_SESSION['basket'];
}
else
header("location: clientsigninpage.php?msg= Log-in First");
$obj = new med_class;
$obj->connectdb();
$val = implode(";",$list); //implode method
$val = (object) $list; //object method
$val = serialize($list); //serialize method
$result = $obj->searchMed($val);
while ($row = $result->fetchObject())
{
echo $row->MedPrice;
}
?>
With "(object)" its giving me following error: "Object of class stdClass could not be converted to string", with "implode": "Array to string conversion" and with "serialize()" it does not print anything.
The function that I am passing value is:
function searchMed($v1)
{
$sql = "select * from storepreview where MedName = '$v1'";
$ret = $this->con->query($sql);
return $ret;
}
I have used these methods by seen following links: (http://www.dyn-web.com/php/arrays/convert.php) ; (Convert an array to a string); (How to convert an array to object in PHP?)
I managed to reproduce your "Array to string conversion" error when using the implode command by running the following line of code:
implode(";", [[]]); // PHP Notice: Array to string conversion in php shell code on line 1
For converting a nested array into a string I found that a foreach loop worked:
$nestedArray = ['outerKeyOne' => ['innerKeyOne' => 'valueOne'], 'outerKeyTwo' => ['innerKeyTwo' => 'valueTwo']];
$arrayOfStrings = [];
foreach ($nestedArray as $key => $value) {
$arrayOfStrings[] = implode(",", $value);
}
implode(";", $arrayOfStrings); // string(17) "valueOne;valueTwo"
The second error associated with the line $val = (object) $list; is from trying to embed an object into the $sql string. It seems like an object is not what you want here, unless it is an object that has a __toString() method implemented.
I hope this is of some help. Using var_dump or something similar would provide more debug output to better diagnose the problems along with the above error messages. That's how I came up with the above code.
You can use json_encode to convert Array to String:
$FINAL_VALUE = json_encode($YOUR_OBJECT);
For more information, you can refer this link.
I'm sending an entire form, about 8 fields, along with my AJAX data object, one of which is a serialized string:
var fields = $(this).serialize();
var data = {
action:'newSubmission',
nonce: Nonce,
fields: fields
};
Now within PHP I cannot understand how to get each field value from the $_POST object correctly.
$test = $_POST['field'];
Is the full string and sends back to JS a properly formatted JSON object. But how do I break up the serialized string correctly in PHP?
The string will be encoded, so you will have to do that with url_decode.
Here is a function that I used to build a workable object out of the string.
function urldecode_to_obj($str) {
$str = trim($str, '"');
// explode string before decoding
foreach (explode('&', $str) as $chunk) {
$param = explode("=", $chunk);
if ($param) {
// search string for array elements and look for key-name if exists
preg_match('#\[(.+?)\]$#', urldecode($param[0]), $with_key);
preg_match('#\[\]$#', urldecode($param[0]), $no_key);
$mkey = preg_split('/\[/', urldecode($param[0]));
// converts to array elements with numeric key
if ($no_key) {
$data[$mkey[0]][] = urldecode($param[1]);
}
// converts to array elements with named key
if ($with_key) {
$data[$mkey[0]][$with_key[1]] = urldecode($param[1]);
}
if (!$no_key && !$with_key) {
$data[urldecode($param[0])] = urldecode($param[1]);
}
}
}
return (object)$data;
}
$str = "serialized_string";
$obj = urldecode_to_obj($str);
Your variables with values are now in the object. If you have a var1 variable in there with a value1:
$obj -> var1 = "value1";
You can also get thins back as an array. Just omit the (object) casting and return the data in t\he function as:
return $data;
If you want to return things to your JS then you should echo them out as an array and use json_encode:
$array = array("success" => true);
echo json_encode($array);
Try using:
$serializedData = file_get_contents("php://input");
$unserializedData = array();
parse_str($unserializedData,$serializedData);
print_r($unserializedData);
instead of the PHP $_POST superglobal use the php://input.
PHP "php://input" vs $_POST
Then you can use theparse_str() php function to turn the serialized string into a php array.
There are also a number of other ways to manually do this if you so choose:
function unserializeForm($str) {
$returndata = array();
$strArray = explode("&", $str);
$i = 0;
foreach ($strArray as $item) {
$array = explode("=", $item);
$returndata[$array[0]] = $array[1];
}
return $returndata;
}
I am trying to convert CSV file to JSON using PHP.
Here is my code
<?php
date_default_timezone_set('UTC');
$today = date("n_j"); // Today is 1/23/2015 -> $today = 1_23
$file_name = $today.'.CSV'; // My file name is 1_23.csv
$file_path = 'C:\\Users\\bheng\\Desktop\\qb\\'.$file_name;
$file_handle = fopen($file_path, "r");
$result = array();
if ($file_handle !== FALSE) {
$column_headers = fgetcsv($file_handle);
foreach($column_headers as $header) {
$result[$header] = array();
}
while (($data = fgetcsv($file_handle)) !== FALSE) {
$i = 0;
foreach($result as &$column) {
$column[] = $data[$i++];
}
}
fclose($file_handle);
}
// print_r($result); // I see all data(s) except the header
$json = json_encode($result);
echo $json;
?>
print_r($result); // I see all data(s)
Then I json_encode($result); and tried to display it, but nothing is displaying on the screen at all. All I see is the blank screen, and 0 error message.
Am I doing anything wrong ? Can someone help me ?
Added Result of print_r($result);
Array (
[Inventory] => Array (
[0] => bs-0468R(20ug)
[1] => bs-1338R(1ml)
[2] => bs-1557G(no bsa)
[3] => bs-3295R(no BSA)
[4] => bs-0730R-Cy5"
[5] => bs-3889R-PE-Cy7"
[6] => 11033R
[7] => 1554R-A647
[8] => 4667
[9] => ABIN731018
[10] => Anti-DBNL protein
.... more ....
Try like this:
$file="1_23.csv";
$csv= file_get_contents($file);
$array = array_map("str_getcsv", explode("\n", $csv));
$json = json_encode($array);
print_r($json);
data.csv
Game,Skill
Treasure Hunter,pilipala
Rocket Launcher,bibobibo
Rocket Engine,hehehohoho
To convert with column name, this is how I do it.
csv2json.php
<?php
if (($handle = fopen("data.csv", "r")) !== FALSE) {
$csvs = [];
while(! feof($handle)) {
$csvs[] = fgetcsv($handle);
}
$datas = [];
$column_names = [];
foreach ($csvs[0] as $single_csv) {
$column_names[] = $single_csv;
}
foreach ($csvs as $key => $csv) {
if ($key === 0) {
continue;
}
foreach ($column_names as $column_key => $column_name) {
$datas[$key-1][$column_name] = $csv[$column_key];
}
}
$json = json_encode($datas);
fclose($handle);
print_r($json);
}
The output result
[
{
"Game": "Treasure Hunter",
"Skill": "pilipala"
},
{
"Game": "Rocket Launcher",
"Skill": "bibobibo"
},
{
"Game": "Rocket Engine",
"Skill": "hehehohoho"
}
]
You can try this way too.
<?php
function csvtojson($file,$delimiter)
{
if (($handle = fopen($file, "r")) === false)
{
die("can't open the file.");
}
$csv_headers = fgetcsv($handle, 4000, $delimiter);
$csv_json = array();
while ($row = fgetcsv($handle, 4000, $delimiter))
{
$csv_json[] = array_combine($csv_headers, $row);
}
fclose($handle);
return json_encode($csv_json);
}
$jsonresult = csvtojson("./doc.csv", ",");
echo $jsonresult;
I ran into a similar problem, I ended up using this to recursively convert the data to UTF-8 on an array before encoding to JSON.
function utf8_converter($array)
{
array_walk_recursive($array, function(&$item, $key){
if(!mb_detect_encoding($item, 'utf-8', true)){
$item = utf8_encode($item);
}
});
return $array;
}
From:
http://nazcalabs.com/blog/convert-php-array-to-utf8-recursively/
This issue is pretty old by now, but hoping this helps someone, as it seemed like the simplest example I found, and I know this is a pretty common thing devs might need to do as a beginner, and lots of answers gloss over the magic.
$file = storage_path('app/public/waitlist_users_test.csv'); //--> laravel helper, but you can use any path here
function csv_to_json($file)
{
// file() loads each row as an array value, then array map uses the 'str_getcsv' callback to
$csv = array_map('str_getcsv', file($file));
// array_walk - "walks" through each item of the array and applies the call back function. the & in "&row" means that alterations to $row actually change the original $csv array, rather than treating it as immutable (*sort of immutable...)
array_walk($csv, function(&$row) use ($csv) {
// array_combine takes the header row ($csv[0]) and uses it as array keys for each column in the row
$row = array_combine($csv[0], $row);
});
array_shift($csv); # removes now very redundant column header --> contains {'col_1':'col_1', 'col_2':'col_2'...}
$json = json_encode($csv);
return $json;
}
There's a lot of magic going on with these functions that accept callback functions, that didn't seem to be explained thoroughly above. I'm self taught and have been programming for years, and find that it's often just glossed over without detailing how callbacks work, so I'll dive in just a little bit for the array_map('str_getcsv', file($file)) function - if you pass a function you've written, or inbuilt php function name as a string, it will take the value of whatever (in this case - array) element is being evaluated by the calling function (in this case array_map), and pass that to the callback function without the need to explicitly pass in a variable - super helpful once you get the hang of it, but I find it's not explained thoroughly very often which leaves beginners to not understand why it works, just that it works.
I've linked most of these above, but here's a little more information:
str-getcsv do? Array Walk Array Map Callables/Callbacks
as #MoonCactus noted, the file() function only loads 1 row at a time which helps save on memory usage for large .csv files.
Also, some other posts reference using explode - why not use explode() instead of str_getcsv() to parse rows? Because explode() would not treat possible enclosured parts of string or escaped characters correctly.
Hope somebody finds this helpful!
If you are converting a dynamic CSV file, you can pass the URL through a parameter (url=http://example.com/some.csv) and it will show you the most up-to-date version:
<?php
// Lets the browser and tools such as Postman know it's JSON
header( "Content-Type: application/json" );
// Get CSV source through the 'url' parameter
if ( isset( $_GET['url'] ) ) {
$csv = explode( "\n", file_get_contents( $_GET['url'] ) );
$index = str_getcsv( array_shift( $csv ) );
$json = array_map(
function ( $e ) use ( $index ) {
return array_combine( $index, str_getcsv( $e ) );
}, $csv
);
}
else {
$json = "Please set the path to your CSV by using the '?url=' query string.";
}
// Output JSON
echo json_encode( $json );
Alternate solution that uses similar method as #Whirlwind's solution but returns a more standard JSON result (with named fields for each object/record):
// takes a string of CSV data and returns a JSON representing an array of objects (one object per row)
function convert_csv_to_json($csv_data){
$flat_array = array_map("str_getcsv", explode("\n", $csv_data));
// take the first array item to use for the final object's property labels
$columns = $flat_array[0];
for ($i=1; $i<count($flat_array)-1; $i++){
foreach ($columns as $column_index => $column){
$obj[$i]->$column = $flat_array[$i][$column_index];
}
}
$json = json_encode($obj);
return $json; // or just return $obj if that's a more useful return value
}
The accepted answer uses file_get_contents() to read the entire file as a string in memory, and then explode() it to make it an array.
But it can be made faster, smaller in memory, and more useful:
function ReadCsv($fn)
{
$lines= file($fn); // read file directly as an array of lines
array_pop($lines); // you can remove the last empty line (if required)
$json= json_encode(array_map("str_getcsv", $lines), JSON_NUMERIC_CHECK);
print_r($json);
}
Nb: I used JSON_NUMERIC_CHECK here to avoid numbers being double quoted into strings. It also reduces the output size and it usually helps javascript on the other side (e.g. to compute or plot the data). Beware of phone numbers though!
I liked #ian-d-miller's solution for converting the data into a key / value style format, but I kept running into issues with his code.
Here's what worked for me:
function convert_CSV_to_JSON($csv_data){
// convert csv data to an array
$data = array_map("str_getcsv", explode("\n", $csv_data));
// use the first row as column headers
$columns = $data[0];
// create array to hold our converted data
$json = [];
// iterate through each row in the data
foreach ($data as $row_index => $row_data) {
// skip the first row, since it's the headers
if($row_index === 0) continue;
// make sure we establish each new row as an array
$json[$row_index] = [];
// iterate through each column in the row
foreach ($row_data as $column_index => $column_value) {
// get the key for each entry
$label = $columns[$column_index];
// add this column's value to this row's index / column's key
$json[$row_index][$label] = $column_value;
}
}
// bam
return $json;
}
Usage:
// as is
$json = convert_CSV_to_JSON($csv);
// encoded
$json = json_encode($json);
Something that i've made for myself and may be useful for others :)
This will convert CSV into JSON array with objects (key => value pair).
function csv2json($a, $e = true) {
$b = ["\r\n","\r","\n",];
foreach ($b as $c => $d) {
$a = explode($d, $a);
$a = isset($b[$c + 1]) ? implode($b[$c + 1], $a) : implode(PHP_EOL, $a);
}
// Convert to CSV
$a = array_map("str_getcsv", explode(PHP_EOL, $a));
// Get the first part of the array as the keys
$a = [
"keys" => array_shift($a),
"rows" => $a,
"row" => null,
];
// Define JSON
$b = [];
foreach ($a["rows"] as $a["row"]) {
$a["row"] = [ "csv" => $a["row"], "json" => (object)[], ];
for ($c = 0; $c < count($a["row"]["csv"]); $c++) {
$a["row"]["csv"][$c] = [#json_decode($a["row"]["csv"][$c]),$a["row"]["csv"][$c]];
// Switch from string to booleans, numbers and others
$a["row"]["csv"][$c] = isset($a["row"]["csv"][$c][0]) ? $a["row"]["csv"][$c][0] : $a["row"]["csv"][$c][1];
// Push it back
$a["row"]["json"]->{$a["keys"][$c]} = $a["row"]["csv"][$c];
}
$a["row"] = $a["row"]["json"];
$b[] = $a["row"];
unset($a["row"]);
}
// $e will be "return"
$e = $e ? json_encode($b) : $b;
// Unset useless variables
unset($a, $b, $c, $d);
return $e;
}
How to use?
If you want to return the JSON as a string, Leave it as default.
If you want to return the JSON as an object / array, set the second parameter to false.
Examples:
$csv = "name,age,gender
John Doe,35,male
Jane Doe,32,female";
echo csv2json($csv, true); // Or without the second parameter, just csv2json($csv)
The example above (^) will return a JSON stringified, Like this:
[{"name":"John Doe","age":35,"gender":"male"},{"name":"Jane Doe","age":32,"gender":"female"}]
and the example below:
var_dump(csv2json($csv, false));
will return a JSON array with these objects:
array(2) {
[0]=>
object(stdClass)#1 (3) {
["name"]=>
string(8) "John Doe"
["age"]=>
int(35)
["gender"]=>
string(4) "male"
}
[1]=>
object(stdClass)#2 (3) {
["name"]=>
string(8) "Jane Doe"
["age"]=>
int(32)
["gender"]=>
string(6) "female"
}
}
public function CsvToJson($fileContent){
//Convert CSV To Json and Return
$all_rows = array();
$newhead =array();
//Extract csv data to array on \n
$array = explode("\n",$fileContent);
//Extract csv header to array on 0 Index
$header = explode(",",$array[0]);
//Remove Header Row From Main Data Array
array_shift($array);
//Extract All Arrays To Saperate Orders
foreach($array as $arr){
$sliced = explode(",",$arr);
array_push($all_rows,$sliced);
}
//Extract All Orders Element To Saperate Array Item
foreach($all_rows as $row){
$sliced = explode(",",$arr);
array_push($all_rows,$sliced);
}
//Remove \r From Header Elements
foreach($header as $key=>$value){
$sliced = str_replace ("\r", "", $value);
array_push($newhead,$sliced);
}
//COMBINE Header as KEY And Row Element As Value
$arrrr = array();
foreach($all_rows as $row) {
//Remove Last Element of ROW if it is \r (Break given in css file for next row)
$count= count($row);
if ($row[$count-1] == "\r") {
array_splice($row, count($row) - 1, 1);
}
//CHECK IF HADER COUNT == ROW COUNT
if (count($header) == count($row)) {
array_push($arrrr,array_combine($newhead,$row));
}
}
//CONVERT ARRAY TO JSON
$json = json_encode($arrrr);
//Remove backslasesh from json key and and value to remove \r
$clean = stripslashes($json);
//CONVERT ARRAY TO JSON AGAIN FOR EXPORT
$jsonagain = json_encode($clean);
return $jsonagain;
}
my Current json code :
{"Results":[{"username":"test","password":"test"},{"username":"test","password":"test"},{"username":"google","password":"test"},{"username":"yahoo","password":"test"},{"username":"hotmail","password":"test"}]}
i want to remove this :
{"username":"google","password":"test"}
from the code using php.
i tried deleting by decoding json to array but cant get it done.
any solution ?
$json_obj = json_decode($json_string);
$unset_queue = array();
foreach ( $json_obj->Results as $i => $item )
{
if ($item->username == "google")
{
$unset_queue[] = $i;
}
}
foreach ( $unset_queue as $index )
{
unset($json_obj->Results[$index]);
}
// rebase the array
$json_obj->Results = array_values($json_obj->Results);
$new_json_string = json_encode($json_obj);
<?php
$JSON = '{"Results":['
. '{"username":"test","password":"test"},'
. '{"username":"test","password":"test"},'
. '{"username":"google","password":"test"},'
. '{"username":"yahoo","password":"test"},'
. '{"username":"hotmail","password":"test"}'
. ']}';
// use json_decode to parse the JSON data in to a PHP object
$jsonInPHP = json_decode($JSON);
// now iterate over the results and remove the one that's google
$results = count($jsonInPHP->Results);
for ($r = 0; $r < $results; $r++){
// look for the entry we are trying to find
if ($jsonInPHP->Results[$r]->username == 'google'
&& $jsonInPHP->Results[$r]->password == 'test'){
// remove the match
unset($jsonInPHP->Results[$r]);
// now we can either break out of the loop (only remove first match)
// or you can use subtract one from $r ($r--;) and keep going and
// find all possible matches--your decision.
break;
}
}
// now that we removed items the keys will be off. let's re-order the keys
// so they're back in-line
$jsonInPHP->Results = array_values($jsonInPHP->Results);
// dump the new JSON data, less google's entry
echo json_encode($jsonInPHP);
Would be how I approach it. I like to avoid foreach(...){} statements when I need to modify the array itself. The above code, by the way, leaves you with:
{
"Results":[
{"username":"test","password":"test"},
{"username":"test","password":"test"},
{"username":"yahoo","password":"test"},
{"username":"hotmail","password":"test"}
]
}
$json = '
{
"Results":[
{"username":"test","password":"test"},
{"username":"test","password":"test"},
{"username":"google","password":"test"},
{"username":"yahoo","password":"test"},
{"username":"hotmail","password":"test"}
]
}';
$arr = json_decode($json, true);
array_filter($arr, function($v) {
return !($v['username'] == 'google' && $v['password'] == 'test');
});
$json = json_encode($arr);
$input='{"Results":[{"username":"test","password":"test"},{"username":"test","password":"test"},{"username":"google","password":"test"},{"username":"yahoo","password":"test"},{"username":"hotmail","password":"test"}]}';
$json = json_decode($input,true);
$match = array('username'=>'google', 'password'=>'test');
unset($json['Results'][array_search($match,$json['Results'])]);
To do it without a foreach but assuming you know the exact values you want to remove
Old question, formatting your JSON differently would help a lot.
Each result entry should have a unique key to identify it.
This makes it easy when needing to remove or update that result.
No reason to iterate over entire JSON this way.
Code would look like this
<?php
$jsonString = '{"Results":{'
.'{"username1":{"username":"google","password":"test1"}}'
.'{"username2":{"username":"yahoo","password":"test2"}}'
.'{"username3":{"username":"msonline","password":"test3"}}'
. '}}';
$jsonInPHP = json_decode($jsonString);
$password = $jsonInPHP["username1"]["pasword"];//Returns test1
$username = $jsonInPHP["username1"]["username"];//Returns google
?>
$myArray=json_decode($theJSONstring);
unset($myArray['Results'][2]);