每隔n次添加页眉和页脚（php循环）

Posted 2021-02-23

Simple loop for adding header and footer avery n times in loop. Useful for printing tables.

/* how many items to loop: */
$count = 6;
/* how many items in row: */
$n = 3;
for( $i=1; $i<=$count; $i++ ) {
	// add header
	if(  $i%$n === 1 || $i === 1 ) {
		echo 'header<br>';
	}
 
	// echo content
	echo "content no. $i<br>";
 
	// add footer
	if( $i%$n === 0 || $i === $count ) {
		echo 'footer<br>';
	}
}