PHP将一维数组转换为二维数组

Posted 2021-02-24

Function to convert a one dimensional array to two dimensional with option to specify how many columns. Returns two dimensional array on success or false on fail.

<?php
$test = array(1,2,3,4,5,6,7,8,9);
 
function array_2d($array, $col_count=2){
	$result = false;
	if(!empty($array) && is_array($array)){
		$row_count = ceil( count($array) / $col_count);
		$pointer = 0;
		for($row=0; $row < $row_count; $row++) {
			for($col=0; $col < $col_count; ++$col){
				if(isset($array[$pointer])) {
					$result[$row][$col] = $array[$pointer];
					$pointer++;
				}
			}
		}
	}
	return $result;
}
$result = array_2d($test, 3);
echo '<pre>'.print_r($result, 1).'</pre>';
?>