Photoshop Learning Experience PHP learning Loop Structure Implementation code

Copy CodeThe code is as follows:

/* Loop structure
* One, while loop
* while (expression)
* {
* loop body;//Repeat until expression is false
* }
* Second, Do-while cycle
* Three, for loop
*
* There are two types of loops depending on the cycle condition
*
* One: Counting cycle (general use for)
* Another: Conditional loop (typically using while do-while)
*
*
*
*/
Use of While
/* $num = 0;
while ($num <100)
{
echo "Output {$num}";
$num + +;
}*/
While output table
Echo '

'; Echo ' '; $i = 0; while ($i <1000) {//10 times a line break if ($i%10==0) {if ($i%20==0) {$bg = "#ffffff";} else {$bg = "#cccccc";} Echo ' ';//output interlaced color change} echo ' '; $i + +; if ($i%10==0) {echo ' '; }} Echo '

Using the While output table

'. $i. '

';
?>

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