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 '
Using the While output table
'; $i = 0; while ($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. ' | '; $i + +; if ($i%10==0) {echo '
'; }} Echo '
';
?>
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