What PHP functions can be used to check the length of a string and extract a specific number of characters?

To check the length of a string in PHP, you can use the `strlen()` function. To extract a specific number of characters from a string, you can use the `substr()` function. These functions can be used together to manipulate strings in PHP easily. 

$string = "Hello, World!";
$length = strlen($string);
$substring = substr($string, 0, 5); // Extract the first 5 characters

echo "Length of the string: $length" . PHP_EOL;
echo "Substring: $substring";

Keywords

PHP string length substr mb_strlen mb_substr

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