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![Is This Code Safe Enough ?
<?php
$url = $_GET['url'];
echo urlencode( $url );
?>](https://image.slidesharecdn.com/php-121102223922-phpapp02/75/Security-in-PHP-9-2048.jpg?cb=1684167937)
![PHP 路徑正規化
<?php
$name = $_GET['name'];
$name = basename( $name );
if ( eregi( "(.php|.conf)$", $name ) )
...](https://image.slidesharecdn.com/php-121102223922-phpapp02/75/Security-in-PHP-23-2048.jpg?cb=1684167937)
![name.php?n=PHPCONF
SELECT * FROM [table]
WHERE username = 'PHPCONF'](https://image.slidesharecdn.com/php-121102223922-phpapp02/75/Security-in-PHP-33-2048.jpg?cb=1684167937)
![name.php?n=PHPCONF'
SELECT * FROM [table]
WHERE username = 'PHPCONF''](https://image.slidesharecdn.com/php-121102223922-phpapp02/75/Security-in-PHP-34-2048.jpg?cb=1684167937)
![name.php?n=PHPCONF%cc'
SELECT * FROM [table]
WHERE username = 'PHPCONF%cc''](https://image.slidesharecdn.com/php-121102223922-phpapp02/75/Security-in-PHP-35-2048.jpg?cb=1684167937)
![情境 B
$res =
preg_replace('@(w+)'.$depr.'([^'.$depr.'/]+)@e',
'$var['1']="2";', implode($depr,$paths));
https://orange.tw...](https://image.slidesharecdn.com/php-121102223922-phpapp02/75/Security-in-PHP-42-2048.jpg?cb=1684167937)
