PHP String Operations Example

PHP provides a number of string operations that can be used to manipulate strings. These operations include:

Concatenation: The concatenation operator (.) can be used to join two strings together. For example, the following code will assign the string "Hello World!" to the variable $str:

$str = "Hello " . "World!";

Length: The strlen() function can be used to get the length of a string. For example, the following code will print the length of the string "Hello World!":

echo strlen("Hello World!");

Comparison: The === and !== operators can be used to compare two strings. For example, the following code will check if the strings "Hello World!" and "Hello World" are equal:

if ($str === "Hello World!") {

    echo "The strings are equal.";

} else {

    echo "The strings are not equal.";

}

Search: The strpos() function can be used to search for a specific string within another string. For example, the following code will return the position of the first occurrence of the string "World" in the string "Hello World!":

$pos = strpos("Hello World!", "World");

Replace: The str_replace() function can be used to replace a specific string with another string within a string. For example, the following code will replace the string "World" with "Universe" in the string "Hello World!":

$str = str_replace("World", "Universe", "Hello World!");

Split: The explode() function can be used to split a string into an array of strings. For example, the following code will split the string "Hello World!" into an array of strings, each containing a single word:

$words = explode(" ", "Hello World!");

Conversion: The mb_convert_case() function can be used to convert a string to uppercase, lowercase, or titlecase. For example, the following code will convert the string "Hello World!" to uppercase:

$str = mb_convert_case("Hello World!", MB_CASE_UPPER);

Other: PHP also provides a number of other string operations, such as trim(), ltrim(), rtrim(), strtoupper(), strtolower(), and ucwords().

These are just a few of the string operations that are available in PHP. For more information, please refer to the PHP documentation.