How should I rewrite the code?

Question

<?php
$original_chars = array(
    '/A/','/B/','/C/'
);
$replaced_chars = array(
    'a','b','c'
);
$updated_filename = preg_replace( $original_chars, $replaced_chars, $filename );
?>

I need to combine two arrays with chars into one associative array.

How should I rewrite the line with preg_replace from previous code sample?

<?php
$array_chars = array(
    '/A/' => 'a',
    '/B/' => 'b',
    '/C/' => 'c'
);
//$updated_filename = preg_replace( $original_chars, $replaced_chars, $filename );
?>

Answer 1

您应该能够使用array_keys和array_values （未经测试）

$updated_filename = preg_replace( array_keys($original_chars), array_values($replaced_chars), $filename );

Answer 2

First at all the best way to do that is strtr()

$filename = strtr($filename, "ABC", "abc");

or

$array_chars('A' => 'a', 'B' => 'b', 'C' => 'c');
$filename = strtr($filename, $array_chars);

For the use of preg_replace with an associative array, you must use array_keys() :

$result = preg_replace(array_keys($array_chars), $array_chars, $filename);

(note that this way is not very usefull and that array_values() is not needed.)