| Re: variable replacement in string [message #178053 is a reply to message #178006] |
Fri, 11 May 2012 14:06   |
Sandman
Messages: 32
Registered: August 2011
Karma:
|
Member |
|
|
In article <a11su1F3j9U2(at)mid(dot)uni-berlin(dot)de>,
"M. Strobel" <sorry_no_mail_here(at)nowhere(dot)dee> wrote:
> Am 10.05.2012 15:05, schrieb Goran:
>> On 10.5.2012 14:44, M. Strobel wrote:
>>> Hi,
>>>
>>> I am still searching a function in PHP to execute variable replacement in
>>> strings.
>>> Other languages do have this, but for PHP I can only find sprintf() and
>>> string replace.
>>>
>>> I have
>>>
>>> $t = ' - solved - ';
>>> $msg = 'The problem is $t';
>>>
>>> I want now:
>>>
>>> echo fxx($msg);
>>>
>>> print out "The problem is - solved - ".
>>>
>>> Please don't tell me about $msg = "The problem is $t"; just think of $msg
>>> like a
>>> template read from a file.
>>>
>>> /Str.
>>
>> strtr() ?
>>
>> You could do something like this:
>>
>> $template = 'Your name is %given_name% %family_name%';
>>
>> echo strtr($template, array(
>> '%given_name%' => 'John',
>> '%family_name%' => 'Doe',
>> ));
>
> yeah, create my own variable system. No easier way?
>
> /Str.
TESTED:
#!/usr/bin/php
<?
$t = "SOLVED";
$template = 'The problem is $t';
print fxx($template);
function fxx($string){
if (preg_match_all("/\\$([a-z_A-Z]+)/i", $string, $matches)) {
foreach($matches[1] as $m) {
global $$m;
}
$string = preg_replace(
"/\\$([a-zA-Z_]+)/sei",
"\${\\1}",
$string
);
}
return $string;
}
?>
Of course, having posted that, I'd still use caution with scopes and
globilzation of variables, since this function may be called inside
another function which hasn't globalized $t, so I would still
recommend to send along a variables of values:
#!/usr/bin/php
<?
$values["t"] = "SOLVED";
$template = 'The problem is $t';
print fxx($template, $values);
function fxx($string, $values){
$string = preg_replace(
"/\\$([a-zA-Z_]+)/sei",
"\$values['\\1']",
$string
);
return $string;
}
?>
And using single quotes when creating the template is important as
well, since we're using PHP-style variables. If you have your own
variable denotation, you don't have to think about that at all (see my
earlier parserxml() function)
--
Sandman[.net]
|
|
|
|
Calendar
Search
Help
Members
Register
Login
Home
]