What are some important functions for working with strings in PHP?

One important function for working with strings in PHP is `strlen()`, which returns the length of a string. This can be useful for validation or manipulation of string data. Another key function is `substr()`, which allows you to extract a portion of a string based on a specified starting point and length. Additionally, `str_replace()` is essential for replacing occurrences of a specific substring within a string. 

// Example of using strlen() function
$string = "Hello, World!";
$length = strlen($string);
echo "The length of the string is: $length";

// Example of using substr() function
$substring = substr($string, 7, 5);
echo "Substring: $substring";

// Example of using str_replace() function
$newString = str_replace("World", "PHP", $string);
echo "New string: $newString";

Keywords

PHP functions strings manipulation substr strlen

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