I'm trying to replace parts of my string. But I met a problem when my search string start with same character:
$string = "Good one :y. Keep going :y2";
$str = str_replace(array_keys($my_array), array_values($my_array), $string);
$my_array= array(":y" => "a", ":y2" => "b");
ouput:
Good one a. Keep going a2
I need my str_replace() to match the word correctly/exactly.
I think you aren't looking for a regex, but for the stripslashes($str) method.
EDIT: From the comments, I understand that you will only replace " with nothing, you should use a simple str_replace here, as @Gumbo said:
$str = ...;
$newStr = str_replace('"', '', $str);
echo $newStr;
You can use regular expressions for this, but the pReg library isn't fast, if you can find a str_* or array variant which does the same I always recommend to use that instead of preg_*
It's safer to parse HTML with DOMDocument instead of regex. Try this code:
<?php
function replaceInAnchors($html)
{
$dom = new DOMDocument();
// loadHtml() needs mb_convert_encoding() to work well with UTF-8 encoding
$dom->loadHtml(mb_convert_encoding($html, 'HTML-ENTITIES', "UTF-8"));
$xpath = new DOMXPath($dom);
foreach($xpath->query('//text()[(ancestor::a)]') as $node)
{
$replaced = str_ireplace('_', ' ', $node->wholeText);
$newNode = $dom->createDocumentFragment();
$newNode->appendXML($replaced);
$node->parentNode->replaceChild($newNode, $node);
}
// get only the body tag with its contents, then trim the body tag itself to get only the original content
return mb_substr($dom->saveXML($xpath->query('//body')->item(0)), 6, -7, "UTF-8");
}
$html = '<li class="hook">
<a href="i_have_underscores">I_have_underscores</a>
</li>';
echo replaceInAnchors($html);
Use gsub
dat <- c("test", "testing", "esten", "etsen", "blest", "estten")
gsub("t", "", dat)
[1] "es" "esing" "esen" "esen" "bles" "esen"
It's possible with Perl:
my $string = "===== Hello World ====";
$string =~ s/(====+)/"-" x length($1)/eg;
# $string contains ----- Hello World ----
Flag /e makes Perl execute expression in second part of s///. You may try this with oneliner:
perl -e '$ARGV[0] =~ s/(====+)/"-" x length($1)/eg; print $ARGV[0]' "===== Hello World ===="
Besides that you should define your array first before you use it, this should work for you:
Your problem is that
str_replace()goes through the entire string and replaces everything it can, you can also see this in the manual.And a quote from there:
So for this I used
strtr()here, because it tries to match the longest byte in the search first.You can also read this in the manual and a quote from there: