程式設計@筆記

例1 引用正常字符串

<?php
$conn = new PDO('sqlite:/home/lynn/music.sql3');

/* Simple string */
$string = 'Nice';
print "Unquoted string: $string\n";
print "Quoted string: " . $conn->quote($string) . "\n";
?>
以上例程會輸出：

Unquoted string: Nice
Quoted string: 'Nice'

例2 引用危險的字符串

<?php
$conn = new PDO('sqlite:/home/lynn/music.sql3');

/* Dangerous string */
$string = 'Naughty \' string';
print "Unquoted string: $string\n";
print "Quoted string:" . $conn->quote($string) . "\n";
?>
以上例程會輸出：

Unquoted string: Naughty ' string
Quoted string: 'Naughty '' string'

例3 引用複雜字符串

<?php
$conn = new PDO('sqlite:/home/lynn/music.sql3');

/* Complex string */
$string = "Co'mpl''ex \"st'\"ring";
print "Unquoted string: $string\n";
print "Quoted string: " . $conn->quote($string) . "\n";
?>
以上例程會輸出：

Unquoted string: Co'mpl''ex "st'"ring
Quoted string: 'Co''mpl''''ex "st''"ring'