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Merge pull request #529 from tchalvak/utf-8-section

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PDO binding with utf-8: Clarified some of the code, and use escape function.
This commit is contained in:
Phil Sturgeon
2018-12-18 17:01:18 +01:00
committed by GitHub
parent 769e121802 550fbe07ab
commit 97fd6e96d3
1 changed files with 20 additions and 8 deletions
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28
_posts/05-05-01-PHP-and-UTF8.md
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@@ -76,10 +76,14 @@ The historic approach to doing that was to include the [charset `<meta>` tag](ht
<?php <?php
// Tell PHP that we're using UTF-8 strings until the end of the script // Tell PHP that we're using UTF-8 strings until the end of the script
mb_internal_encoding('UTF-8'); mb_internal_encoding('UTF-8');
$utf_set = ini_set('default_charset', 'utf-8');
if (!$utf_set) {
throw new Exception('could not set default_charset to utf-8, please ensure it\'s set on your system!');
}
// Tell PHP that we'll be outputting UTF-8 to the browser // Tell PHP that we'll be outputting UTF-8 to the browser
mb_http_output('UTF-8'); mb_http_output('UTF-8');
// Our UTF-8 test string // Our UTF-8 test string
$string = 'Êl síla erin lû e-govaned vîn.'; $string = 'Êl síla erin lû e-govaned vîn.';
@@ -102,20 +106,28 @@ $link = new PDO(
// Store our transformed string as UTF-8 in our database // Store our transformed string as UTF-8 in our database
// Your DB and tables are in the utf8mb4 character set and collation, right? // Your DB and tables are in the utf8mb4 character set and collation, right?
$handle = $link->prepare('insert into ElvishSentences (Id, Body) values (?, ?)'); $handle = $link->prepare('insert into ElvishSentences (Id, Body, Priority) values (default, :body, :priority)');
$handle->bindValue(1, 1, PDO::PARAM_INT); $handle->bindParam(':body', $string, PDO::PARAM_STR);
$handle->bindValue(2, $string); $priority = 45;
$handle->bindParam(':priority', $priority, PDO::PARAM_INT); // explicitly tell pdo to expect an int
$handle->execute(); $handle->execute();
// Retrieve the string we just stored to prove it was stored correctly // Retrieve the string we just stored to prove it was stored correctly
$handle = $link->prepare('select * from ElvishSentences where Id = ?'); $handle = $link->prepare('select * from ElvishSentences where Id = :id');
$handle->bindValue(1, 1, PDO::PARAM_INT); $id = 7;
$handle->bindParam(':id', $id, PDO::PARAM_INT);
$handle->execute(); $handle->execute();
// Store the result into an object that we'll output later in our HTML // Store the result into an object that we'll output later in our HTML
// This object won't kill your memory because it fetches the data Just-In-Time to
$result = $handle->fetchAll(\PDO::FETCH_OBJ); $result = $handle->fetchAll(\PDO::FETCH_OBJ);
header('Content-Type: text/html; charset=UTF-8'); // An example wrapper to allow you to escape data to html
function escape_to_html($dirty){
echo htmlspecialchars($dirty, ENT_QUOTES, 'UTF-8');
}
header('Content-Type: text/html; charset=UTF-8'); // Unnecessary if your default_charset is set to utf-8 already
?><!doctype html> ?><!doctype html>
<html> <html>
<head> <head>
@@ -125,7 +137,7 @@ header('Content-Type: text/html; charset=UTF-8');
<body> <body>
<?php <?php
foreach($result as $row){ foreach($result as $row){
print($row->Body); // This should correctly output our transformed UTF-8 string to the browser escape_to_html($row->Body); // This should correctly output our transformed UTF-8 string to the browser
} }
?> ?>
</body> </body>