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

Listen

$string = "The quick brown fox jumps over the lazy dog";

if (strpos($string, "The") === 0) {
    echo "The string starts with 'The'";
} else {
    echo "The string does not start with 'The'";
}

How can I use the array_map function to apply a function to each element of an array in PHP? Example code:

How can I create a session variable 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 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 the array_unshift function to add an element to the beginning of an array in PHP? Example code:

How can I use the array_pop function to remove the last element from an array in PHP? Example code:

How can I loop through an array in PHP? Example code

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

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

How can I use the filesize function to get the size of a file 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 read data from a JSON file using PHP? Example code:

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

How can I use the array_keys function to get an array of keys from an associative array in PHP? Example code:

How can I trim whitespace from the beginning and end of a string 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 use the array_walk function to apply a function to each element of an array in PHP? Example code:

How can I prevent SQL injection in PHP?

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

How can I upload a file using PHP? Example code

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

How can I check if a variable is set in PHP? Example code:

How can I use the array_shift function to remove the first element from an array in PHP? Example code:

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

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

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

How can I calculate the sum of an array in PHP? Example code:

How can I use the rename function to rename a file or directory 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_splice function to remove and replace elements in an array in PHP? Example code: