PHP array

Image
  An array stores multiple values in one single variable. In PHP, the array() function is used to create an array. Example: <?php $pets = array ( "dog" , "cat" , "rabbit" ); echo $pets [ 0 ] . "," . $pets [ 1 ] . "," . $pets [ 2 ]; ?> Output: dog,cat,rabbit An array is a special variable, which can hold more than one value at a time. If you have a list of student names, storing the names in single variables could like this, $name1 = "Peter" $name2 = "Mickle" $name2 = "Bravo" However, what if you want to loop through the names and find a specific one? And what if you had 3 names, but 1000? The solution is to create an array . An array can hold many values under a single name, and you can access the values by referring to an index number. There are three different kind of arrays. Numeric array – Arrays with a numeric index Associative array – Arrays with named keys
Post a Comment

Code for Generate Random Alphanumeric String

Generate Random Alphanumeric String

This function is used to generate a set of random alphanumeric, you just need to pass size of code it will return alphanumeric random number.
For example you pass 20 number it will return 20 digit alphanumeric random number.

Syntax:
<?php  
function generateRefCode($num) {
    $charsAlpha = "abcdefghijklmnopqrstuvwxyz";
    srand((double)microtime()*1000000);
    $i = 0;
    $passAlpha = '' ;

    while ($i < $num/4) {
        $num = rand() % 33;
        $tmp = substr($charsAlpha, $num, 1);
        $passAlpha = $passAlpha . $tmp;
        $i++;  
    }

    $charsNum = "0123456789";
    srand((double)microtime()*1000000);
    $i = 0;
    $passNum = '' ;

    while ($i < $num) {
        $num = rand() % 33;
        $tmp = substr($charsNum, $num, 1);
        $passNum = $passNum . $tmp;
        $i++;  
    }
    $strReturn = $passAlpha."-".$passNum;
    return $strReturn;
}    
?>

Comments

Post a Comment

Popular posts from this blog

PHP Code for get Client IP Address

Image
You can get the client IP address from below code. Syntax: <?php //whether ip is from share internet if ( ! empty ( $_SERVER [ 'HTTP_CLIENT_IP' ] ) ) { $ipaddress = $_SERVER [ 'HTTP_CLIENT_IP' ] ; } //whether ip is from proxy elseif ( ! empty ( $_SERVER [ 'HTTP_X_FORWARDED_FOR' ] ) ) { $ipaddress = $_SERVER [ 'HTTP_X_FORWARDED_FOR' ] ; } //whether ip address is from remote address else { $ipaddress = $_SERVER [ 'REMOTE_ADDR' ] ; } echo $ipaddress ;   ?>
Read more

PHP explode function

Image
In this post, you’ll learn how to use the PHP explode() function. PHP explode() function returns an array of strings by splitting a string by a separator. The following shows the syntax of the PHP explode() function. Syntax: explode (separator, string , limit) separator - Required. Specifies where to break the string string – Required. The string to split limit – Optional. Specifies the number of array elements to return Possible Values Greater than 0 - Returns an array with a maximum of limit element(s) Less than 0 - Returns an array except for the last -limit element(s) 0 - Returns an array with one element Example: <?php $txt = "Welcome to PHP Coding Help." ; print_r ( explode ( " " , $txt )); ?> Output: Array ( [0] => Welcome [1] => to [2] => PHP [3] => Coding [4] => Help. ) Using the limit parameter to return a number of array elements: Example: <?php $str = 'red,blue,yell
Read more

PHP Script for MySqli Database Connection

Image
PHP provides mysqli_connect() function to open a database connection. Syntax: mysqli_connect("hostname", "username", "password", "database_name"); The hostname parameter in the above syntax specify the host name (e.g. localhost) or IP address of the MySQL server, whereas the username and password parameters specifies the credentials to access MySQL server, and the database parameter, if provided will specify the default MySQL database to be used when performing queries. Example: <html>    <head>       <title> MySQLi Database Connection </title>    </head>     <body>       <?php          $hostname = "localhost" ;           $username = "root" ;           $password = "" ;           $conn = mysqli_connect ( $hostname , $username , $password ,  $password );             if ( ! $conn ){             die ( 'Could not connect: ' . mysqli_error() );  
Read more