Can I use str_replace twice in one string? - php

<?php
echo "I'm currently listening to</a> <a href='http://last.fm/artist/" . str_replace(" ","+",$artist) . "/_/" . str_replace(" ","+",$currenttrack) . "'>" . $currenttrack . "</a>";
?>
Above is my code. I'm trying to use str_replace() again on $artist and $currenttrack like:
str_replace("'","%27",$artist) and str_replace("'","%27",$currenttrack)
because the apostrophe doesn't go through correctly and messes with my code, but when I use it first with the spaces, it's already passed and won't change again.
What can I do?


If you want to do multiple replacements on the same string, you can pass arrays to str_replace:
str_replace(array(" ", "'"), array("+", "%27"), $artist)
However, when creating URL parameters, you shouldn't do the replacements yourself. You should use urlencode, and it will do all the necessary encodings.


Try this. It also makes your code more readable. Also, your anchor tags aren't formatted correctly.
$artist = str_replace(' ', '+', $artist);
$track = str_replace(' ', '%27', $currenttrack);
echo 'I\'m currently listening to ' . $track . '';


If I understood your question correctly, you are trying to replace spaces by + and ' by %27 in the two strings. To achieve this, you have to apply str_replace() on the result of the first operation. If $input is the original string, use:
$intermediate = str_replace(" ", "+", $input);
$result = str_replace("'", "%27", $intermediate);


There is a built in function to do the same you are trying to do: urlencode
$currenttrack = $artist = "X' xx WWW' w";
$url = "http://last.fm/artist/" . $artist . "/_/" . $currenttrack;
echo urlencode($url); // http%3A%2F%2Flast.fm%2Fartist%2FX%27+xx+WWW%27+w%2F_%2FX%27+xx+WWW%27+w

Related

Replacing the SPACE at first and last

I want to replace the first and last words and sentences .
I use this code.
$text = ' this is the test for string. ';
echo $text = str_replace(" ", "", $text);
when i have use replace code .
all space is deleted and repalsed.
any body can help me?!
i want get this:
this is the test for string.

You probably want the trim function here:
$text = ' this is the test for string. ';
echo '***' . trim($text) . '***';
***this is the test for string.***
Just to round out this answer, if you wanted to accomplish the same thing using a replacement, you could do a regex replace as follows:
$out = preg_replace("/^\s*|\s*$/", "", $text);
echo '***' . $out . '***';
***this is the test for string.***
This approach might a good starting point if you wanted to do a regex replacement with perhaps slightly different logic.

PHP - Replace apostrophe

I am currently developing a website with a list of names. Some of the names include apostrophes ' and I want to link them to a website using their name.
I want to link to the a url like:
example.com/ (their name)
And by doing that, I first replace " " with "+". So the links looks like: example.com/john+doe
But if the name is John'Doe it turns the url into just example.com/john
And skips the lastname.
How can I fix this? I tried changing ', \' etc, to html codes, to ', and more, but nothing seems to work.
Here is my current code:
$name = $row['name'];
$new_name = str_replace(
array("'", "'"),
array(" ", "+"),
$name
);
echo "<td>" . $name . " <a href='http://www.example.com/name=" . $new_name . "' target='_blank'></a>" . "</td>";
What I want it to look like:
John Doe Johnson ----> http://www.example.com/name=John+Doe+Johnson
John'Doe Johnson ----> http://www.example.com/name=John'Doe+Johnson
It changes the spaces to +, but how can I fix the apostrophes? Anyone knows?

You should be using PHP's function urlencode, php.net/manual/en/function.urlencode.php.
<?php
$name = $row['name'];
//$urlname = urlencode('John\'Doe Johnson');
$urlname = urlencode($name);
echo "<td>$name<a href='http://www.example.com/name=$urlname' target='_blank'>$name</a></td>";
Output:
<td>John%27Doe+Johnson <a href='http://www.example.com/name=John%27Doe+Johnson' target='_blank'></a></td>

echo urlencode("John'Doe Johnson");
return
John%27Doe+Johnson

php echo string html with php-variables, can't break the php string

I'm trying to echo a phpstring-message. This php string consists of html and php variables and comes form a database and i can't change that data.
$name = 'John';
$str = '<b>Hi {$name},</b><br/>How are you?';
echo $str;
So i'm trying to replace the php string, but it doesn't work. This is my code:
$str = str_replace('{', '\' . ', $str);
$str = str_replace('}', ' . \' ', $str);
I get: <b>Hi' . $name. ',</b><br/>How are you?
How do i get the string like this?
<b>Hi John,</b><br/>How are you?
Thank you in advance

Just do it like this, you won't be able to replace it with a concatenation:
echo str_replace('{$name}', $name, $str);
EDIT:
If you don't know the name of the variable just use this:
echo preg_replace('/\{(.*?)\}/', $name, $str);

it's already implemented in PHP, you can directly write the variable in double quote like this:
echo "<b>Hi $name,</b><br/>How are you?";
or for some more complex variables:
echo "<b>Hi {$user->name},</b><br/>How are you?";

Preg_replace dynamic

Keys, and values mysql.
$valores[$codigo] = "<img src=\"template/" . $template . "/smiles/" . $smile . "\" border=\"0\"/>";
$arrayKeys = array_keys($valores);
$arrayValues = array_values($valores);
return preg_replace($arrayKeys, $arrayValues, $coment);
error, Warning: preg_replace() [function.preg-replace]: No ending delimiter ':' found.

You may want to use str_replace() instead.
Edit :
You just need to replace preg_replace by str_replace :
return str_replace($arrayKeys, $arrayValues, $coment);
See the documentation here str_replace()

preg_replace() - Perform a regular expression search and replace
If I understand correctly you want to replace :) with smiles images so you can do that like this:
<?php
$search = array(":))",":)");
$replace = array("<img src=\"template/" . $template . "/smiles/laugh.jpg\" />","<img src=\"template/" . $template . "/smiles/smile.jpg\" />");
str_replace($search, $replace, $comment);
?>

Str_replace for multiple items

I remember doing this before, but can't find the code. I use str_replace to replace one character like this: str_replace(':', ' ', $string); but I want to replace all the following characters \/:*?"<>|, without doing a str_replace for each.

Like this:
str_replace(array(':', '\\', '/', '*'), ' ', $string);
Or, in modern PHP (anything from 5.4 onwards), the slighty less wordy:
str_replace([':', '\\', '/', '*'], ' ', $string);

str_replace() can take an array, so you could do:
$new_str = str_replace(str_split('\\/:*?"<>|'), ' ', $string);
Alternatively you could use preg_replace():
$new_str = preg_replace('~[\\\\/:*?"<>|]~', ' ', $string);

For example, if you want to replace search1 with replace1 and search2 with replace2 then following code will work:
print str_replace(
array("search1","search2"),
array("replace1", "replace2"),
"search1 search2"
);
// Output: replace1 replace2

str_replace(
array("search","items"),
array("replace", "items"),
$string
);

If you're only replacing single characters, you should use strtr()

You could use preg_replace(). The following example can be run using command line php:
<?php
$s1 = "the string \\/:*?\"<>|";
$s2 = preg_replace("^[\\\\/:\*\?\"<>\|]^", " ", $s1) ;
echo "\n\$s2: \"" . $s2 . "\"\n";
?>
Output:
$s2: "the string "

I had a situation whereby I had to replace the HTML tags with two different replacement results.
$trades = "<li>Sprinkler and Fire Protection Installer</li>
<li>Steamfitter </li>
<li>Terrazzo, Tile and Marble Setter</li>";
$s1 = str_replace('<li>', '"', $trades);
$s2 = str_replace('</li>', '",', $s1);
echo $s2;
result
"Sprinkler and Fire Protection Installer", "Steamfitter ", "Terrazzo, Tile and Marble Setter",

I guess you are looking after this:
// example
private const TEMPLATE = __DIR__.'/Resources/{type}_{language}.json';
...
public function templateFor(string $type, string $language): string
{
return \str_replace(['{type}', '{language}'], [$type, $language], self::TEMPLATE);
}

In my use case, I parameterized some fields in an HTML document, and once I load these fields I match and replace them using the str_replace method.
<?php echo str_replace(array("{{client_name}}", "{{client_testing}}"), array('client_company_name', 'test'), 'html_document'); ?>

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