How can I convert a string to lowercase in PHP? Example code:

Listen

$string = "Hello World";

echo strtolower($string);

How can I delete a file in PHP? Example code:

How can I use the array_slice function to get a portion of an array in PHP? Example code:

How can I connect to a MySQL database using PHP? Example code.

How can I sort an associative array by its values in PHP? Example code:

How can I use the mkdir function to create a directory in PHP? Example code:

How can I use the implode function to join an array into a string in PHP? Example code:

How can I use the curl_setopt function to set options for a cURL session in PHP? Example code:

How can I use the curl_init function to initialize a cURL session in PHP? Example code:

How can I use the curl_setopt_array function to set multiple options for a cURL session in PHP? Example code:

How can I use the array_unique function to remove duplicate elements from an array in PHP? Example code:

How can I use the array_rand function to get a random key from an array in PHP? Example code:

How can I use the array_filter function to filter an array based on a condition in PHP? Example code:

How can I shuffle an array in PHP? Example code:

How can I use the array_chunk function to split an array into chunks in PHP? Example code:

How can I validate a form using PHP? Example code

How can I use the scandir function to get a list of files and directories in a directory in PHP? Example code:

How can I use the htmlspecialchars function to convert special characters to HTML entities in PHP? Example code:

How can I use the curl_exec function to execute a cURL session and get the response in PHP? Example code:

PHP Use Cases with Example Source Code

How can I check if a string starts with a certain substring in PHP? Example code:

How can I use the json_encode function to convert an array or object to a JSON string in PHP? Example code:

How can I generate a random string in PHP? Example code:

How can I check if a string ends with a certain substring in PHP? Example code:

How can I use a for loop in PHP? Example code:

How can I sort an array in descending order in PHP? Example code:

How can I use the copy function to copy a file in PHP? Example code:

How can I use the explode function to split a string into an array with a limit in PHP? Example code:

How can I use the fopen and fwrite functions to write a string to a file in PHP? Example code:

How to send SMS using PHP program (full code sample included)

How can I use a ternary operator in PHP? Example code: