PHP saat ini () function
contoh
Arus keluaran nilai elemen array:
<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland");
echo current($people) . "<br>";
?>
$people = array("Peter", "Joe", "Glenn", "Cleveland");
echo current($people) . "<br>";
?>
Menjalankan contoh »
Definisi dan Penggunaan
saat ini fungsi () mengembalikan nilai elemen saat dalam array.
Setiap array memiliki pointer internal untuk nya elemen "saat ini", titik awal untuk memasukkan ke dalam elemen pertama array.
Tip: Fungsi ini tidak memindahkan pointer array internal.
metode terkait:
- End () - pointer internal untuk elemen terakhir dalam array, dan output.
- Berikutnya () - pointer internal untuk elemen berikutnya dalam array, dan output.
- yang PREV () - pointer internal untuk elemen terakhir dari array, dan output.
- RESET () - pointer internal untuk elemen pertama dalam array, dan output.
- setiap () - Mengembalikan nama kunci elemen saat ini dan nilai-nilai, dan pointer internal yang bergerak maju.
tatabahasa
current( array )
| 参数 | 描述 |
|---|---|
| array | 必需。规定要使用的数组。 |
rincian teknis
| Pengembalian: | Mengembalikan nilai elemen saat dalam array, jika elemen sekarang kosong atau tidak nilai elemen saat dikembalikan SALAH. |
|---|---|
| Versi PHP: | 4+ |
contoh yang lebih
contoh 1
Semua metode presentasi yang relevan:
<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland");
echo current($people) . "<br>"; // The current element is Peter
echo next($people) . "<br>"; // The next element of Peter is Joe
echo current($people) . "<br>"; // Now the current element is Joe
echo prev($people) . "<br>"; // The previous element of Joe is Peter
echo end($people) . "<br>"; // The last element is Cleveland
echo prev($people) . "<br>"; // The previous element of Cleveland is Glenn
echo current($people) . "<br>"; // Now the current element is Glenn
echo reset($people) . "<br>"; // Moves the internal pointer to the first element of the array, which is Peter
echo next($people) . "<br>"; // 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
?>
$people = array("Peter", "Joe", "Glenn", "Cleveland");
echo current($people) . "<br>"; // The current element is Peter
echo next($people) . "<br>"; // The next element of Peter is Joe
echo current($people) . "<br>"; // Now the current element is Joe
echo prev($people) . "<br>"; // The previous element of Joe is Peter
echo end($people) . "<br>"; // The last element is Cleveland
echo prev($people) . "<br>"; // The previous element of Cleveland is Glenn
echo current($people) . "<br>"; // Now the current element is Glenn
echo reset($people) . "<br>"; // Moves the internal pointer to the first element of the array, which is Peter
echo next($people) . "<br>"; // 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
?>
Menjalankan contoh »
Lengkap PHP Array Referensi