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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$var = "1675675670.78";
if (preg_match("/^\d{1,16}\.?\d{2}$/", $var)) {
echo strlen($var);
///^\d{1,16}(\.\d{2})?$/
} else {
echo "Fool";
}
echo "\n";