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$str = 'An apple a day keeps the docter away.'
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'I'm wing'
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'I'm wing'
²Å¶Ô£¬ÆäÖÐ ' ¼´³ÆÎªÌøÍÑ×Ö·û (escape character)¡£
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$name = "Wing";
echo 'Name: $name';
echo "Name: $name";
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Name: $name
Name: Wing
ÔÚË«ÒýºÅÀïµÄ×Ö·û´®Èç¹ûÓÐ $ (dollar sign)£¬Ö»Òª¸Ä³ÉÌøÍÑ×ÖÔªµÄд·¨¼´¿É£º
$total = 12000
echo "Total: $ $total"; //Êä³ö Total: $ 12000
ÔÚ×ö variable interpolation ʱ£¬±äÁ¿Ãû³ÆÊÇÒÔÒ»¸öÒÔÉϿոñ×öΪ½çÏߣ¬ÀýÈ磺
$n_file = 5;
if ($n_file == 1) {
echo "There are $n_file.";
} else {
echo "There are $n_files.";
}
µ± $n_file ²»Îª 1 ʱ£¬"There are $n_files." PHP Ëù¿´µ½µÄ±äÁ¿Îª $n_files£¬¶ø²»ÊÇÕýÈ·µÄ $n_file£¬ËùÒÔ±ØÐë¸Ä³É£º
$n_file = 5;
if ($n_file == 1) {
echo "There are $n_file.";
} else {
echo "There are {$n_file}s.";
}
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echo "I'm a happy bird.";
echo 'I'm a happy "bird"!';
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I'm a happy bird.
I'm a happy "bird"!
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