(PHP 4, PHP 5)
strtr — Translate certain characters
This function returns a copy of str , translating all occurrences of each character in from to the corresponding character in to .
If from and to are different lengths, the extra characters in the longer of the two are ignored.
The string being translated.
The string being translated to to .
The string replacing from .
The replace_pairs parameter may be used as a substitute for to and from in which case it's an array in the form array('from' => 'to', ...).
This function returns a copy of str , translating all occurrences of each character in from to the corresponding character in to .
| 版本 | 说明 |
|---|---|
| 4.0.0 | The optional to and from parameters were added. |
Example #1 strtr() example
<?php
$addr = strtr($addr, "???", "aao");
?>
strtr() may be called with only two arguments. If called with two arguments it behaves in a new way: from then has to be an array that contains string -> string pairs that will be replaced in the source string. strtr() will always look for the longest possible match first and will *NOT* try to replace stuff that it has already worked on.
Example #2 strtr() example with two arguments
<?php
$trans = array("hello" => "hi", "hi" => "hello");
echo strtr("hi all, I said hello", $trans);
?>
上例将输出：
hello all, I said hi