How can a PHP beginner improve their understanding of string manipulation functions like str_ireplace and strtr()?

To improve understanding of string manipulation functions like str_ireplace and strtr(), a PHP beginner can practice using these functions in different scenarios. They can create small projects or exercises that involve replacing or translating specific characters or substrings within a string. Additionally, referring to the official PHP documentation and experimenting with different parameters and options of these functions can help in understanding their usage better.

// Example of using str_ireplace function
$string = "Hello, World!";
$new_string = str_ireplace("world", "PHP", $string);
echo $new_string;

// Example of using strtr function
$trans = array("hello" => "hi", "world" => "PHP");
$string = "hello world";
$new_string = strtr($string, $trans);
echo $new_string;