Konnessjoni u Mistoqsija MySQL Database fil-PHP

Il-konnessjoni ma' u l-mistoqsija ta' database MySQL fil-PHP hija parti essenzjali mill-iżvilupp tal-web. PHP jipprovdi funzjonijiet u metodi li jippermettulna nikkonnettjaw ma 'database MySQL, inwettqu mistoqsijiet, u jinteraġixxu mad-dejta.

Biex tikkonnettja ma 'database MySQL, nużaw il- funzjoni mysqli_connect() jew mysqli biex nistabbilixxu konnessjoni u ngħaddu parametri bħall-isem tas-server, l-isem tal-utent, il-password, u l-isem tad-database. Ladarba l-konnessjoni tiġi stabbilita, nistgħu neżegwixxu mistoqsijiet SQL bħal SELECT, INSERT, UPDATE, DELETE biex irkupraw u timmanipulaw id-data fid-database.

 

Qabbad mad-database MySQL

<?php  
$servername = "localhost";  
$username = "your_username";  
$password = "your_password";  
$database = "your_database";  
  
// Connect to MySQL database  
$conn = mysqli_connect($servername, $username, $password, $database);  
  
// Check connection  
if(!$conn) {  
    die("Connection failed: ". mysqli_connect_error());  
}  
  
echo "Connected successfully!";  
?>  

 

Mistoqsija MySQL Database fil PHP

Wara li nikkonnettjaw b'suċċess, nistgħu nwettqu mistoqsijiet tad-database bl-użu tal- mysqli_query() funzjoni. Hawn eżempju ta 'kif twettaq mistoqsija SELECT f'PHP:

<?php  
$sql = "SELECT * FROM users";  
$result = mysqli_query($conn, $sql);  
  
if(mysqli_num_rows($result) > 0) {  
    // Loop through records and display data  
    while($row = mysqli_fetch_assoc($result)) {  
        echo "ID: ". $row["id"]. "- Name: ". $row["name"]. "<br>";  
    }  
} else {  
    echo "No records found.";  
}  
  
// Free memory of query result  
mysqli_free_result($result);  
  
// Close database connection  
mysqli_close($conn);  
?>  

 

inserting Data fil MySQL Database fil PHP

Biex daħħal data f'database MySQL billi tuża PHP, nużaw il- mysqli_query() funzjoni bl-istqarrija INSERT INTO. Hawn eżempju:

<?php  
$name = "John Doe";  
$email = "[email protected]";  
$age = 30;  
  
$sql = "INSERT INTO users(name, email, age) VALUES('$name', '$email', '$age')";  
  
if(mysqli_query($conn, $sql)) {  
    echo "Data inserted successfully!";  
} else {  
    echo "Error: ". mysqli_error($conn);  
}  
?>  

 

Aġġornament tad-Dejta f'Database MySQL f'PHP

Biex taġġorna d-dejta f'database MySQL billi tuża PHP, nużaw il- mysqli_query() funzjoni mad-dikjarazzjoni UPDATE. Hawn eżempju:

<?php  
$id = 1;  
$newEmail = "[email protected]";  
  
$sql = "UPDATE users SET email='$newEmail' WHERE id=$id";  
  
if(mysqli_query($conn, $sql)) {  
    echo "Data updated successfully!";  
} else {  
    echo "Error: ". mysqli_error($conn);  
}  
?>  

 

Tħassir tad-Data minn MySQL Database fil-PHP

Biex tħassar data minn database MySQL billi tuża PHP, nużaw il- mysqli_query() funzjoni bid-dikjarazzjoni DELETE. Hawn eżempju

<?php  
$id = 1;  
  
$sql = "DELETE FROM users WHERE id=$id";  
  
if(mysqli_query($conn, $sql)) {  
    echo "Data deleted successfully!";  
} else {  
    echo "Error: ". mysqli_error($conn);  
}  
?>