On Wed, Jul 29, 2009 at 6:47 PM, Daniel Kolbo<kolb0057@xxxxxxx> wrote:
> Jonathan Tapicer wrote:
>> Use eval, like this:
>>
>> eval('$str_expanded = "' . str_replace('"', '\\"', $str) . '";');
>>
>> The str_replace is used because you could have a " inside $str and it
>> would break the string, if you are sure the $str has no " inside you
>> can omit it.
>>
>> Jonathan
>>
>> On Wed, Jul 29, 2009 at 5:43 PM, Daniel Kolbo<kolb0057@xxxxxxx> wrote:
>>> Hello,
>>>
>>> Is it possible to force a string to expand variable names after the
>>> string has been set and before the variable's been defined without
>>> having to do a string replace or preg_replace?
>>>
>>> for example,
>>> <?php
>>> $str = "some string and some \$var plus other stuff";
>>> echo $str."<br />";
>>> $var = "Variable Contents";
>>> echo $str."<br />";
>>> $str_expanded = $str;//would like this to expand $var into $str_expanded
>>> echo $str_expanded."<br />";
>>> ?>
>>>
>>> Thanks,
>>> dK
>>> `
>>>
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>>>
>>>
>>
> nice!
>
> This would allow me to have $str loaded with all kinds of variables and
> not have to do a str_replace with each (assuming the quote business is cool)
>
> Why did you have the double \\?
>> eval('$str_expanded = "' . str_replace('"', '\\"', $str) . '";');
> Isn't the following equivalent?
> eval('$str_expanded = "' . str_replace('"', '\"', $str) . '";');
>
> Thanks,
> dK
> `
>
Yes, it's the same, you can use only one \ in that case, sometimes you
have to escape if it is followed by a character that needs to be
escaped, for example you can't do echo '\'; you should do echo '\\';
Jonathan
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