str_replace() with associative array - php

Question

You can use arrays with str_replace():
$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?
$array_from_to = array (
'from1' => 'to1';
'from2' => 'to2';
);
How can you use it with str_replace()?
Speed matters - array is big enough.

Answer 1

$text = strtr($text, $array_from_to)
By the way, that is still a one dimensional "array."

Answer 2

$array_from_to = array (
'from1' => 'to1',
'from2' => 'to2'
);
$text = str_replace(array_keys($array_from_to), $array_from_to, $text);
The to field will ignore the keys in your array. The key function here is array_keys.

Answer 3

$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

Answer 4

$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..
$array_from_to = array (
'from1' => 'to1',
'from2' => 'to2',
);
This is not a two-dimensional array, it's an associative array.
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.
$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..

Answer 5

$keys = array_keys($array);
$values = array_values($array);
$text = str_replace($key, $values, $string);