python pos函数用法_PHP pos() 函数 | 菜鸟教程

实例 1

所有相关方法的演示：

$people = array("Peter", "Joe", "Glenn", "Cleveland");

echo

current($people) . "
"; // The current element is Peter

echo

next($people) . "
"; // The next element of Peter is Joe

echo

current($people) . "
"; // Now the current element is Joe

echo prev($people) . "
";

// The previous element of Joe is Peter

echo end($people) . "
"; //

The last element is Cleveland

echo prev($people) . "
"; // The

previous element of Cleveland is Glenn

echo current($people) . "
"; //

Now the current element is Glenn

echo reset($people) . "
"; // Moves

the internal pointer to the first element of the array, which is Peter

echo next($people) . "
"; // The next element of Peter is Joe

print_r (each($people)); // Returns the key and value of the current element

(now Joe), and moves the internal pointer forward

?>

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