php str_replace() 与关联数组
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原文地址: http://stackoverflow.com/questions/2399286/
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str_replace() with associative array
提问by Qiao
You can use arrays with str_replace():
您可以将数组与 str_replace() 一起使用：
$array_from = array ('from1', 'from2');
$array_to = array ('to1', 'to2');
$text = str_replace ($array_from, $array_to, $text);
But what if you have associative array?
但是如果你有关联数组呢？
$array_from_to = array (
'from1' => 'to1';
'from2' => 'to2';
);
How can you use it with str_replace()?
Speed matters - array is big enough.
如何将它与 str_replace() 一起使用？
速度很重要 - 阵列足够大。
回答by Matthew
$text = strtr($text, $array_from_to)
$text = strtr($text, $array_from_to)
By the way, that is still a one dimensional "array."
顺便说一下，这仍然是一个一维“数组”。
回答by mauris
$array_from_to = array (
'from1' => 'to1',
'from2' => 'to2'
);
$text = str_replace(array_keys($array_from_to), $array_from_to, $text);
The tofield will ignore the keys in your array. The key function here is array_keys.
该to字段将忽略数组中的键。这里的关键功能是array_keys。
回答by Rahul Yadav
$text='yadav+RAHUL(from2';
$array_from_to = array('+' => 'Z1',
'-' => 'Z2',
'&' => 'Z3',
'&&' => 'Z4',
'||' => 'Z5',
'!' => 'Z6',
'(' => 'Z7',
')' => 'Z8',
'[' => 'Z9',
']' => 'Zx1',
'^' => 'Zx2',
'"' => 'Zx3',
'*' => 'Zx4',
'~' => 'Zx5',
'?' => 'Zx6',
':' => 'Zx7',
"'" => 'Zx8');
$text = strtr($text,$array_from_to);
echo $text;
//output is
yadavZ1RAHULZ7from2
回答by Mark Tomlin
$search = array('{user}', '{site}');
$replace = array('Qiao', 'stackoverflow');
$subject = 'Hello {user}, welcome to {site}.';
echo str_replace ($search, $replace, $subject);
Results in Hello Qiao, welcome to stackoverflow..
结果在Hello Qiao, welcome to stackoverflow..
$array_from_to = array (
'from1' => 'to1',
'from2' => 'to2',
);
This is not a two-dimensional array, it's an associative array.
这不是二维数组，而是关联数组。
Expanding on the first example, where we place the $search as the keys of the array, and the $replace as it's values, the code would look like this.
扩展第一个示例，我们将 $search 作为数组的键，将 $replace 作为值，代码如下所示。
$searchAndReplace = array(
'{user}' => 'Qiao',
'{site}' => 'stackoverflow'
);
$search = array_keys($searchAndReplace);
$replace = array_value($searchAndReplace);
# Our subject is the same as our first example.
echo str_replace ($search, $replace, $subject);
Results in Hello Qiao, welcome to stackoverflow..
结果在Hello Qiao, welcome to stackoverflow..
回答by Tyler Carter
$keys = array_keys($array);
$values = array_values($array);
$text = str_replace($key, $values, $string);
