Python | Create and delete an index in Elasticsearch To use the elastic search we need to import the Elasticsearch package >>> from elasticsearch import Elasticsearch now create an object of Elasticsearch search class by providing …

SQL | IN operator with PHP Array In this article we will use PHP Array with SQL IN operator. SQL IN operator allows us to specify multiple values in where clause. So in this article …

Predefined classes in PHP are: Directory stdClass __PHP_Incomplete_Class exception php_user_filter

header() function The header() function in php is use to sends a raw HTTP header to a client. With the help of header() function we can Change page location, set timezone, set caching control, etc. …

PHP | Unlink() function The unlink() function is an inbuilt function in PHP that is used to delete the file from a directory. If the file function executes successfully and deletes the file then it …

PHP | Convert Object To  Array Converting an object to an array is a small thing that can be achieved by a single line of code. For this purpose, we need to use typecasting. Typecasting …

HTML | <hr> tag By using html <hr> tag, some time we need to style <tr> tag as per page or design requirement. For styling <hr> tag we can use htrml <hr> tag attribute or …

$_SERVER['REMOTE_ADDR'] id use to get the IP address of the user.   But sometime it may not return the true IP address of the client at all time. Use Below code to get true IP …

Error type in php There are three main error type in php Notice Error Warning Error Fatal Error   Notice Error It is a simple and non critical error which is occur during script execution. …

PHP | What is php? PHP is a popular server site scripting langage stands for "PHP: Hypertext Preprocessor".  It is an open source scripting language, hence it is free to download and use. We can …

PHP | Recursion  PHP also supports recursive function call like C/C++. In such a case, a function calls itself within the function.   Note: Recursion must be incorporated carefully since it can lead to an …

The explode() and split() both function is use to split a string into an array. But the difference is explode() function splits a string into array by string where as Split function splits string into …

PHP | Output of the following statements var_dump(0123 == 123); var_dump('0123' == 123); var_dump('0123' === 123   var_dump(0123 == 123) This will output bool(false) because the leading 0 in 0123 tells the PHP interpreter to treat the …

Django | Overriding the save method The save method is inherited from models.Model class. It is used to override the save method before storing the data in the database. This is used when there is …

SQL | View View in SQL is a kind of virtual table. It does not physical exists in our database but have rows and column as there we have in a real database table. we …