Which function provides information about the number of letters in a word or sentence in PHP?

To get the number of letters in a word or sentence in PHP, you can use the `strlen()` function. This function returns the length of a string, which in this case would be the number of letters in the word or sentence. You can simply pass the word or sentence as an argument to the `strlen()` function to get the desired result. 

$word = "Hello";
$num_letters = strlen($word);
echo "The word '$word' has $num_letters letters.";

Keywords

PHP function strlen string length

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