PHP code for traversing arrays, three methods

$people = array("Peter", "Joe", "Glenn", "Cleveland");
$people1 = array("Peter", "Joe", "asd"=>"Glenn" , "Cleveland");
// 7.list(variable 1, variable 2, variable 3); Generally used with each to traverse the array.
// The list function uses the elements in the array to assign values ​​to a set of variables.
// This function is only used for numerically indexed arrays, and assumes that numerical indexes start from 0.
list($a1,$a2,$a3)=$people1;//Assign the array people1 to the list
echo $a1.$a2.$a3;//Output the values ​​in the list
echo "

" ;
// 6.each(array1); Generate an array consisting of the key name and key value of the element pointed to by the current internal pointer of the array, 
                 // and move the internal pointer forward. 
print_r (each($people));
print_r (each($people));
reset($people);//Reset the pointer
//Give the key and value in people1 to list
while ( list( $key, $val) = each($people1) ) 
{
 echo "$key => $val
";
}
for( $i=0;$i echo $people[$i]."
"; 
}
foreach( $people as $v ){
echo $v."
";
 }
    
        


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