10.
$a++;
11.
// how did I get here?
12.
echo “\n\n\n”;
13.
debug_print_backtrace();
14.
if( $a < 10 )
15.
iterate();
16.
}
17.
iterate();
18.
# OUTPUT:
19.
#0 recur() called at [C:\htdocs\php_stuff\index.php:8]
20.
#1 iterate() called at [C:\htdocs\php_stuff\index.php:25]
21.
#0 recur() called at [C:\htdocs\php_stuff\index.php:8]
22.
#1 iterate() called at [C:\htdocs\php_stuff\index.php:21]
23.
#2 recur() called at [C:\htdocs\php_stuff\index.php:8]
24.
#3 iterate() called at [C:\htdocs\php_stuff\index.php:25]
25.
#0 recur() called at [C:\htdocs\php_stuff\index.php:8]
26.
#1 iterate() called at [C:\htdocs\php_stuff\index.php:21]
27.
#2 recur() called at [C:\htdocs\php_stuff\index.php:8]
28.
#3 iterate() called at [C:\htdocs\php_stuff\index.php:21]
29.
#4 recur() called at [C:\htdocs\php_stuff\index.php:8]
30.
#5 iterate() called at [C:\htdocs\php_stuff\index.php:25]
7. metaphone()
这个函数返回单词的
metaphone 值,相同读音的单词具有相同的 metaphone 值,
也就是说这个函数可以帮你判断两个单词的读音是否
相同。
8. natsort()
natsort()能将一个数组以自然排序法 进行排列,直接看个例子吧:
1.
$items = array(
2.
“100 apples”, “5 apples”, “110 apples”, “55 apples”
3.
);
4.
// normal sorting:
5.
sort($items);
6.
print_r($items);
7.
# Outputs:
8.
# Array
9.
# (
10.
# [0] => 100 apples
11.
# [1] => 110 apples
12.
# [2] => 5 apples
13.
# [3] => 55 apples