How can you use the strlen() function in PHP to determine the length of a variable before manipulating it?

When working with variables in PHP, it is important to know their length before performing any operations on them to avoid unexpected results or errors. One way to determine the length of a variable is by using the strlen() function in PHP. This function takes a string as input and returns the number of characters in that string. By using strlen() before manipulating the variable, you can ensure that your code behaves as expected. 

$myVariable = "Hello, World!";
$length = strlen($myVariable);
echo "The length of the variable is: " . $length;

Keywords

strlen function PHP variable manipulation

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