field_count()
PHP mysqli field_count() funksiyasi
Misol - obyektga yo‘naltirilgan uslub
Faraz qilaylik, bizda "Friends" nomli jadval bor (3 ta ustun va 20 ta qatordan iborat).
Bu misol eng so‘nggi so‘rov uchun ustunlar sonini qaytaradi:
<?php
$mysqli = new mysqli("localhost","my_user","my_password","my_db");
if ($mysqli -> connect_errno) {
echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
exit();
}
$mysqli -> query("SELECT * FROM Friends");
// Get number of columns - will return 3
$mysqli -> field_count();
$mysqli -> close();
?>
Protsedural uslubdagi misolni sahifa pastida ko‘ring.
Ta’rif va qo‘llanilishi
field_count() / mysqli_field_count() funksiyasi eng so‘nggi so‘rov uchun ustunlar sonini qaytaradi.
Sintaksis
Obyektga yo‘naltirilgan uslub:
$mysqli -> field_count()
Protsedurali uslub:
mysqli_field_count(connection)
Parametr qiymatlari
| Parametr | Tavsif |
|---|---|
| connection | Majburiy. Foydalaniladigan MySQL ulanishini belgilaydi |
Texnik tafsilotlar
| Qaytariladigan qiymat: | Natijalar to‘plamidagi ustunlar sonini ifodalovchi butun sonni qaytaradi |
|---|---|
| PHP versiyasi: | 5+ |
Misol - protsedural uslub
Faraz qilaylik, bizda "Friends" nomli jadval bor (3 ta ustun va 20 ta qatordan iborat).
Bu misol eng so‘nggi so‘rov uchun ustunlar sonini qaytaradi:
<?php
$con = mysqli_connect("localhost","my_user","my_password","my_db");
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
exit();
}
mysqli_query($con, "SELECT * FROM Friends");
// Get number of columns - will return 3
mysqli_field_count($con);
mysqli_close($con);
?>
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