This article explains PHP array traversal examples. Traversing the array Traversing the array: It means going through each one once 1) for loop is rarely used because it has defects '傻逼', 'num'=>10 ); /* foreach($arr1 as $value){ echo $value.' '; } */ foreach($arr1 as $key=>$value){ echo $key.'=>'.$value.' '; } ?> '; } } '; foreach ($students as $val){ if($val[2]===true){ $val[2]='男'; }else{ $val[2]='女'; } echo "{$val[0]}{$val[1]}{$val[2]}{$val[3]}"; } echo ''; ?>Copy after login This article explains PHP array traversal examples. For more related content, please pay attention to the PHP Chinese website. Related recommendations: PHP implementation of bucket sorting algorithm ##PHP array classification and array creation example explanation php The use of pdo placeholder (code example explanation)