Mysqli array failing? - php

Question

I have a block of text and a preg_match_all sequence to create an array ($matches) from certain elements in the text.
I then look up a corresponding entry for each string in the first array using mysqli and receive a second array - ($replacement).
I want to replace the first array's position in the original text with the second array, re-finding the first array and naming it $arraytoreplace. This is the code I use:
$replacement = array();
$myq = "SELECT code,title FROM messages WHERE ID=?";
if ($stmt = $mysqli2->prepare($myq)) {
foreach($matches[1] as $value) {
$stmt->bind_param("s", $value);
$stmt->execute();
// bind result variables
$stmt->bind_result($d,$cc);
if($stmt->fetch()) {
$replacement[] = '' . $cc . '';
}
}
$stmt->close();
}
If I use var_dump on the arrays before the str_replace like so:
var_dump($arraytoreplace);
var_dump($replacement);
I get:
array(4) {
[0]=> string(3) "111"
[1]=> string(2) "12"
[2]=> string(4) "1234"
[3]=> string(1) "0"
}
array(4) {
[0]=> string(5) "hello"
[1]=> string(2) "hi"
[2]=> string(3) "foo"
[3]=> string(3) "bar"
}
I then use str_replace to drop the second array into the first array's place in the original text.
Usually this is fine, but everything breaks once it hits the 10 string in an array mark.
Instead of Text hello text hi I'll get Text 11foo text foo1 or something equally bizarre.
Any ideas?
Edit: The code used for replacing the arrays as follows:
$messageprep = str_replace($arraytoreplace, $replacement, $messagebody);
$messagepostprep = str_replace('#', '', $messageprep);
echo '<div class="messagebody">' . $messagepostprep . '</div>';

Answer 1

It looks like your getting partial replacements when a string of numbers is contained inside a longer string, i.e. 23 inside 1234.
You need to do your replacements with a regular expression on the boundary of the search string. Something like...
$text = preg_replace("/\b" . $replace . "\b/", $value, $text);
Another possible solution would be to consider changing the values to replace so that they are padded with zeros...
Array(
[0] => string(3) "0111"
[1] => string(2) "0012"
[2] => string(4) "1234"
[3] => string(1) "0000"
)
...and make sure that your search strings are also padded with zeros, because 0012 will never be confused with 12 and accidentally found in 0123.