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<!DOCTYPE html> <html lang="en"> <head> <title>Validate an Integer in PHP</title> </head> <body> <?php // Sample integer value $int = 20; // Validate sample integer value if(filter_var($int, FILTER_VALIDATE_INT)){ echo "The <b>$int</b> is a valid integer"; } else { echo "The <b>$int</b> is not a valid integer"; } ?> </body> </html>
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