SQL - IN Operator SQL - ANY, ALL Operators SQL - EXISTS Operator SQL - CASE SQL - NOT Operator SQL - NOT EQUAL SQL - IS NULL SQL - IS NOT NULL SQL - NOT NULL SQL - BETWEEN Operator SQL - UNION Operator SQL - UNION vs UNION ALL ...
<?php $number = 9; $str = "javatpoint"; $file = fopen("test.txt","w"); echo fprintf($file,"There are %u million bicycles in %s.",$number,$str); ?> 输出: 43 例子2 <?php $num1 = 123456789; $num2 = -123456789; $char = 50; // The ASCII Character 50 is 2 // Note...