How can I trim whitespace from the beginning and end of a string in PHP? Example code:

$string = "  Hello World   ";

echo trim($string);

How can I use the strrev function to reverse a string in PHP? Example code:

How can I use the array_intersect function to get the common elements between two or more arrays in PHP? Example code:

How can I send an email using PHP? Example code

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

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

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

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

How can I use a conditional statement in PHP? Example code

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

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

How can I replace a substring in a string in PHP? Example code:

What is PHP code?

How to code in PHP

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

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

How can I format a date 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 subtract days from a date in PHP? Example code:

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

How can I use a regular expression to match a pattern in a string 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 use the array_merge function to merge two or more arrays in PHP? Example code:

How to create drop down menu in PHP with example

How can I redirect to another page in PHP? Example code:

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

How can I use the array_reduce function to apply a function to each element of an array and reduce it to a single value in PHP? Example code:

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

How can I use the str_replace function to replace multiple substrings in a string in PHP? Example code:

How can I prevent SQL injection in PHP?

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