JSON Encode

PHP JSON Encode large data with lesser resources

Examples

Generating single row output as object.

<?php

require_once __DIR__ . '/AutoloadJsonEncode.php';

use CustomJsonEncode\JsonEncoder;

// Create JsonEncode Object.
$jsonEncodeObj = JsonEncoder::getObject();

// Execute DB Query
$stmt = $db->select($sql);
$stmt->execute($params);

// For single row - one
$row = $stmt->fetch(PDO::FETCH_ASSOC);
$jsonEncode->encode($row);

// For single row - two
$jsonEncode->startObject();
foreach($stmt->fetch(PDO::FETCH_ASSOC) as $key => $value) {
    $jsonEncode->addKeyValue($key, $value);
}
$jsonEncode->endObject();

// Free statement resources and close the cursor.
$stmt->closeCursor();

$jsonEncode = null;

Generating many rows output as array of objects.

<?php

require_once __DIR__ . '/AutoloadJsonEncode.php';

use CustomJsonEncode\JsonEncoder;

// Create JsonEncode Object.
$jsonEncodeObj = JsonEncoder::getObject();

// Execute DB Query
$stmt = $db->select($sql);
$stmt->execute($params);

// For multiple rows
$jsonEncode->startArray();
for(;$row=$stmt->fetch(PDO::FETCH_ASSOC);) {
    $jsonEncode->encode($row);
}
$jsonEncode->endArray();

// Free statement resources and close the cursor.
$stmt->closeCursor();

$jsonEncode = null;

Generating single row output inside object.

<?php

require_once __DIR__ . '/AutoloadJsonEncode.php';

use CustomJsonEncode\JsonEncoder;

// Create JsonEncode Object.
$jsonEncodeObj = JsonEncoder::getObject();

// Start JSON object
$jsonEncode->startObject();

// Execute DB Query - 1
$stmt = $db->select($sql);
$stmt->execute($params);
foreach($stmt->fetch(PDO::FETCH_ASSOC) as $key => $value) {
    $jsonEncode->addKeyValue($key, $value);
}
// Free statement resources and close the cursor.
$stmt->closeCursor();

// Execute DB Query - 2 (which returns single row)
$stmt = $db->select($sql_2);
$stmt->execute($params_2);
$row = $stmt->fetch(PDO::FETCH_ASSOC);
$stmt->closeCursor();

// Append key / value pair (value can be an integer / string / array)
$jsonEncode->addKeyValue('subCatgories', $row);

// End JSON object
$jsonEncode->endObject();

$jsonEncode = null;

Generating many rows output inside object.

<?php

require_once __DIR__ . '/AutoloadJsonEncode.php';

use CustomJsonEncode\JsonEncoder;

// Create JsonEncode Object.
$jsonEncodeObj = JsonEncoder::getObject();

// Start JSON object
$jsonEncode->startObject();

// Execute DB Query - 1
$stmt = $db->select($sql);
$stmt->execute($params);
foreach($stmt->fetch(PDO::FETCH_ASSOC) as $key => $value) {
    $jsonEncode->addKeyValue($key, $value);
}
// Free statement resources and close the cursor.
$stmt->closeCursor();

// Start JSON array inside object
$objectKey = 'subCatgories';
$jsonEncode->startArray($objectKey);

// Execute DB Query - 2
$stmt = $db->select($sql_2);
$stmt->execute($params_2);
for(; $row=$stmt->fetch(PDO::FETCH_ASSOC);) {
    $jsonEncode->encode($row);
}
// Free statement resources and close the cursor.
$stmt->closeCursor();

// End JSON array inside object
$jsonEncode->endArray();

// End JSON object
$jsonEncode->endObject();

$jsonEncode = null;

Appending raw JSON.

<?php

require_once __DIR__ . '/AutoloadJsonEncode.php';

use CustomJsonEncode\JsonEncoder;

// Create JsonEncode Object.
$jsonEncodeObj = JsonEncoder::getObject();

// Start JSON object
$jsonEncode->startObject();

// Execute DB Query - 1
$stmt = $db->select($sql);
$stmt->execute($params);
foreach($stmt->fetch(PDO::FETCH_ASSOC) as $key => $value) {
    $jsonEncode->addKeyValue($key, $value);
}
// Free statement resources and close the cursor.
$stmt->closeCursor();

// Append Json
$jsonEncode->appendJson('{"NewKey1": {"Key11": "Value11", "Key12": "Value12"}}');

// Append Json for a dynamic Key
$jsonEncode->appendKeyJson("NewKey2", '{"Key21": "Value21", "Key22": "Value22"}');

// End JSON object
$jsonEncode->endObject();

$jsonEncode = null;

> The $jsonEncode = null; will stream the generated JSON.

? Contributing

Issues and feature requests are welcome.<br /> Feel free to share them on issues page

Author

? Ramesh N. Jangid (Sharma)

• Github: @polygoncoin

? License

Copyright © 2026 Ramesh N. Jangid (Sharma).<br /> This project is MIT licensed.