json_add for php

JSON (JavaScript Object Notation) is a lightweight data-interchange format.

1. Easy for humans to read and write.
2. Easy for machines to parse and generate.
3. Collection of name/value pairs.
4. Used for C, C++, C#, Java, JavaScript, Perl, Python, and many others.
5. Compatible with universal data structures – array, vector, list, or sequence.

json_decode — Decodes a JSON string
json_encode — Returns the JSON representation of a value
json_add — Review below code 😉

function json_add($old, $new) {  // function to add json strings  $old, $new are arrays
        $old_arr = json_decode($old, true);
        if(is_array($old_arr)) {
            $new_arr = array_merge($old_arr, $new);
            return json_encode($new_arr);
        else {
            // it means first column updation
            return json_encode ( $new );

here $json_str is json formated string in which we have to add new $array
json_add($json_str, $array);    

Every opportunity is trouble… Every trouble is opportunity 😉

PHP ORM – Create select box with mysql set or enum

PHP have rich set of functions to solve real time problems in programming and web development.. thanks to Rasmus Lerdorf

eval — Evaluate a string as PHP code

A SET datatype can hold any number of strings from a predefined list of strings. The ENUM datatype restricts to a single member of the set of predefined strings, the SET datatype allows to store any of the values together, from none to all of them.

CREATE TABLE svnlabs_set (
name SET(‘lamp’,’web’,’linux’,’joomla’)

CREATE TABLE svnlabs_enum (
name ENUM(‘lamp’,’web’,’linux’,’joomla’)

If we want to fill the html select box with these two tables…

SHOW COLUMNS FROM svnlabs_set;
> set(‘lamp’,’web’,’linux’,’joomla’)

SHOW COLUMNS FROM svnlabs_enum;
> enum(‘lamp’,’web’,’linux’,’joomla’)

now based on column type set list of string values from mysql to php array…



// if column type is set
$arr = “\$set=”.str_replace(“set”, “array(“, $column[‘Type’]));

// if column type is enum
$arr = “\$set=”.str_replace(“enum”, “array(“, $column[‘Type’]));



Use $set PHP array to fill select box….