PHP? ???????? ???? ??? ??? ????? ????? ?? ??? ????.
??????? ??: ??? ???? ??????? ?? ??? ?????. MySQLi ?? PDO.
?????? ??: SQL ??? ???? ??? ??? ?????. data.
??? ????: ?? ???? ???? ?????.
?? ???: ??? ???? ???? ?? ?????.
??? ??? ??? ??? ????. MySQLi:
1??: ??????? ??
<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database_name";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error)?{?????
die("Connection?failed:?"?.?$conn->connect_error);?
}?
?>
2??: ?????? ??
<?php $sql = "SELECT id, name, email FROM users WHERE id = 1"; // Example query $result = $conn->query($sql);? ?>
3??: ???? ???
<?php
$user = null;
if ($result->num_rows?>?0)?{?????
//?Fetch?associative?array?????
$user?=?$result->fetch_assoc();?
}?else?{?????
echo?"No?results?found.";?
}?
?>
4??: ?? ???
<?php if ($user): ?>? <form action="update.php" method="post">????? <input type="hidden" name="id" value="<?php echo $user['id']; ?>">????? <label for="name">Name:</label>????? <input type="text" id="name" name="name" value="<?php echo htmlspecialchars($user['name']); ?>">?? <label for="email">Email:</label>????? <input type="email" id="email" name="email" value="<?php echo htmlspecialchars($user['email']); ?>">?????????? <input type="submit" value="Update">? </form>? <?php endif; ?>
5??: ?? ??
<?php $conn->close();? ?>
??:
- ?????? ??: localhost, ??? ??, ???? ? database_name? ?? ?????? ?? ???? ????.
- SQL ?? : ??? ???? ????? SQL ??? ?????(?: WHERE ?).
- HTML ??: ?? ??? ??? ???? ?????. ??? ??? ??? ? XSS ??? ????? htmlspecialchars()? ?????.
- ?? ??: ??? update.php? ????, ??? ?????? ????? ?? ?? ???? ?????.
? ??? PHP? ???? ???? ???? ???? ???? ?? ??? ?????. ??????? ??? ?? SQL ?? ? ?? ??? ?????.
? ??? PHP? ???? ?? ???????? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!
? AI ??
Undress AI Tool
??? ???? ??
Undresser.AI Undress
???? ?? ??? ??? ?? AI ?? ?
AI Clothes Remover
???? ?? ???? ??? AI ?????.
Clothoff.io
AI ? ???
Video Face Swap
??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!
?? ??
??? ??
???++7.3.1
???? ?? ?? ?? ???
SublimeText3 ??? ??
??? ??, ???? ?? ????.
???? 13.0.1 ???
??? PHP ?? ?? ??
???? CS6
??? ? ?? ??
SublimeText3 Mac ??
? ??? ?? ?? ?????(SublimeText3)
??? ??
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??? ??? ?? ?? : PHP ???
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phphasthreecommentstyles : //, #forsingle-lineand/.../formulti-lline.usecommentstoexplainwhycodeexists, notwhatitdoes.marktodo/fixMeitemsandDisableCodeTemporlinlyDuingDeBugging.aVoidOver-commentingsimplOgic.writeCoCoCoCoCoConcomeCOCOCOCONCOCOCOCOCOCOCOCOCISE
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Windows? PHP? ???? ??
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Windows? PHP? ???? ?? ???? ??? ?????. 1. ??? PHP ??? ?????? ?? ??????. Apache? ?? ThreadSafe ??? ????? Nginx??? ThreadSafe ??? ???? ?? ????. 2. php.ini ??? ???? php.ini-development ?? php.ini-production? php.ini? ?????. 3. ?? ? ??? ?? ??? ?? ?? ??? PHP ??? ??????. 4. PHP? ????? ?????? ??? ????? ?? ?? ?? PHP-V? ???? ?? ??? ???? ?? ?? ??? ??????. 5. Apache? ???? ?? httpd.conf?? p? ???????.
? ?? PHP ???? : ???? ??
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? ?? PHP ???? ??? ???? ??? ?????? ?? ?? ?? ??? ???? XAMPP/MAMP/LAMP? ?? ? ?? ??? ???? ???? ??? ???? ??? ?????. ??, hello.php?? ??? ??? ?? ??? ???? ???? ??????. ??, PHP ? HTML? ???? ?? ??? ??? ???? ?? ????. ?????, ???? ??, ?? ?? ? ?? ?? ??? ?? ???? ?????? ???? ???? ?? ????? ???????.
PHP ? ???? ??? ??????
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phpisaserver-sideScriptingLanguageUsedForWebDevelopment, ?? ProcessesData, InteractSwithDatabases ? SendShtmlTobrowsers.commonusesincludeusera-sectentication, e-commerceplatforms
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PHP? ?? ???? 4 ?? ?? ??? ?????. 1. PHP ??? ?????? ??? ??? ???? ?? ?????. 2. Echo ? Print? ????? ?? ???? ????, ??? Echo? ?? ?? ??? ?????? ??????. 3. ?? ???? ?? ???? ??????? //, # ? //; 4. ? ??? ?????? ????? ??? ?? ????? ??? ??? ??? ?? ???? ??? ????. ??? ?? ??? ????? ???? ???? PHP ??? ???? ? ??? ? ? ????.
PHP 8 ?? ???
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???? PHP8? ???? ??? ??? ????. 1. ????? ??? ?? ????; 2. PHP8 ? ?? ?? ??? ??????. 3. ??? ????? ????? ??? ??????. 4. ??? ?? ?? ??? ??????. Windows ???? Zip ???? ?????? ?? ?? ? ?? ?? ??? ???? ???? ????? ?? ??? ??? ?? ? ? ????. MACOS ???? Homebrew? ???? ? ??, PHP8 ??, ?? ?? ?? ? ?? ??? ?? ??? ???? ?? ????. ?? ??? ?? ????? ???? ????? ????? ??? ?? ??? ??? ??? ? ????.
?? ??? ?? ???
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Python? Ifelse ??? ???? ??? ??? ??? ?? ??? ???? ????. 1. ???? ??? ???? ??? ???? ????. ??? ??? ?? ??? ???? ?? ?????. 2. ?? ?? ??? ELIF? ?? ????, ????? ???? ?? ???? ?????. 3. ?? ?? ??? ???? ?? ?? ? ?? ? ?? ???? ?? ?? ????. 4. 3 ?? ??? ??? ?????? ??? ifelse? ???? ? ??? ? ????. ?? ??, ??? ?? ? ??? ??????? ?????? ??? ???? ???? ?? ??? ??? ? ????.
