What is the best way to check the length of text input before saving it to a database in PHP?

When saving text input to a database in PHP, it's important to validate the length of the input to prevent data truncation or exceeding database column limits. One way to check the length of text input before saving it is by using the strlen() function to get the length of the input and comparing it to a maximum allowed length. If the input exceeds the maximum length, you can display an error message to the user and prevent the data from being saved. 

$input = $_POST['input']; // Assuming 'input' is the name of the input field
$max_length = 100; // Maximum allowed length

if(strlen($input) > $max_length) {
    echo "Error: Input exceeds maximum length of $max_length characters.";
} else {
    // Save the input to the database
}

Keywords

PHP text input database validation character length

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