I have a long PHP file and I want to copy all the variable names only and build an insert sql query. Is there a way where I can search for a pattern using regular expression and concatenate the find result till I collected all the variable and spit it out in a statement?
I am using TextMate and am familiar with regular expression search. Regex search result give $0,$1 and so forth argument. Do not know if this possible though. Solution in any editor will do not just text mate.
I have just too many variable (+100) don't feel like copy every single one. Here my sample file
$ID = $_POST['id'];
$TXN_TYPE = $_POST['txn_type'];
$CHARSET = $_POST['charset']
$CUSTOM = $_POST['custom'];
You could try something with get_defined_vars(). However this function also lists GLOBAL vars. You can use this snippet to remove them if you don't want them and display only the vars you defined
$variables = array_diff(get_defined_vars(), array(array()));
However this snippet generates Notices and I haven't found a way to solve them yet.
If you've only got $_POST variables you can loop through the $_POST array itself
You create the SQL programmatically while looping through the array.
My own solution is, do the inverse. It is not probably possible.
Leave only the variable names Remove all the rest. Use
[space].+ regex to remove everything that is after the variable name.
clean the file so that only variable names are left. then do a couple more find and replace to bring the variable name in the form you want.
If you're looking to match only the variable names (not the $_POST array indices), then the regular expression is pretty much provided in the PHP documentation:
\$[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*
This will, of course, include $_POST, but that should be easy enough to remove. If not, you could do it with negative lookahead (if TextMate supports it):
\$(?!_POST($|[^a-zA-Z0-9_\x7f-\xff]))[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*
Related
Ok, am trying to find a character or group of characters, or something that can be used that I can explode from, since the text is user-defined, I need to be able to explode from a value that I have that can never be within the text.
How can I do this?
An example of what I'm trying to do...
$value = 'text|0||#fd9||right';
Ok,
text is something that should never change in here.
0, again not changeable
#fd9 is a user-defined string that can be anything that the user inputs...
and right sets the orientation (either left or right).
So, the problem I'm facing is this: How to explode("||", $value) so that if there is a || within the user-defined part... Example:
$value = 'text|0||Just some || text in here||right';
So, if the user places the || in the user-defined part of the string, than this messes this up. How to do this no matter what the user inputs into the string? So that it should return the following array:
array('text|0', 'Just some || text in here', 'right');
Should I be using different character(s) to explode from? If so, what can I use that the user will not be able to input into the string, or how can I check for this, and fix it? I probably shouldn't be using || in this case, but what can I use to fix this?
Also, the value will be coming from a string at first, and than from the database afterwards (once saved).
Any Ideas?
The problem of how to represent arbitrary data types as strings always runs up against exactly the problem you're describing and it has been solved in many ways already. This process is called serialization and there are many serialization formats, anything from PHP's native serialize to JSON to XML. All these formats specify how to present complex data structures as strings, including escaping rules for how to use characters that have a special meaning in the serialization format in the serialized values themselves.
From the comments:
Ok, well, basically, it's straight forward. I already outlined 13 of the other parameters and how they work in Dream Portal located here: http://dream-portal.net/topic_122.0.html so, you can see how they fit in. I'm working on a fieldset parameter that basically uses all of these parameters and than some to include multiple parameters into 1. Anyways, hope that link helps you, for an idea of what an XML file looks like for a module: http://dream-portal.net/topic_98.0.html look at the info.xml section, pay attention to the <param> tag in there, at the bottom, 2 of them.
It seems to me that a more sensible use of XML would make this a lot easier. I haven't read the whole thing in detail, but an XML element like
<param name="test_param" type="select">0:opt1;opt2;opt3</param>
would make much more sense written as
<select name="test_param">
<option default>opt1</option>
<option>opt2</option>
<option>opt3</option>
</select>
Each unique configuration option can have its own unique element namespace with custom sub-elements depending on the type of parameter you need to represent. Then there's no need to invent a custom mini-format for each possible parameter. It also allows you to create a formal XML schema (whether this will do you any good or not is a different topic, but at least you're using XML as it was meant to be used).
You can encode any user input to base64 and then use it with explode or however you wish.
print base64_encode("abcdefghijklmnopqrstuvwxyz1234567890`~!##$%^&*()_+-=[];,./?>:}{<");
serialized arrays are also not a bad idea at all. it's probably better than using a comma separated string and explode. Drupal makes good use of serialized arrays.
take a look at the PHP manual on how to use it:
serialize()
unserialize()
EDIT: New Solution
Is it a guarantee that text doesn't contain || itself?
If it doesn't, you can use substr() in combination with strpos() and strrpos() instead of explode
Here's what I usually do to get around this problem.
1) capture user's text and save it in a var $user_text;
2) run an str_replace() on $user_text to replace the characters you want to split by:
//replace with some random string the user would hopefully never enter
$modified = str_replace('||','{%^#',$user_text);
3) now you can safely explode your text using ||
4) now run an str_replace on each part of the explode, to set it back to the original user entered text
foreach($parts as &$part) {
$part = str_replace('{%^#','||',$part);
}
can anyone help me to play with GET urls for example I have a link like this:
?id=5&lang=1
So my question is how can I make this one:
?id=5,1
I don't want to show the &lang, only I want is that the &lang to replace with , "comma" can anyone help me?
You can use mod_rewrite to rewrite ?id=5,1 to ?id=5&lang=1 internally.
Otherwise, the value of id will be 5,1. Your application would then need to know that id contains more than the id. It could then parse out the language from the id. However, this will become confusing when you introduce more parameters.
Assuming you have already built the URL in the way you have specified, you can break the id field based on the comma and extract the real id and lang field
$urlPieces = explode(",", $_GET['id']);
$id = $urlPieces[0];
$lang = $urlPieces[1];
You are able to do this, but it's not very clean, in terms of the proper $_GET variable values. The solution automatically type casts the values to integers:
sscanf($_GET['id'], '%d,%d', $id, $lang);
// $id = int(5)
// $lang = int(1)
Two solutions:
Firstly, you could simply reformat the parameters when they arrive in your PHP program. With ?id=5,1, you'll get a PHP $_GET array with id '5,1'. This you can simply split using the explode() function to get the two values you want.
The second solution is to use the Apache mod_rewrite feature, to modify the URL arguments before they arrive at PHP. For this, you'll need to understand regular expressions (regex), as mod_rewrite uses this for it's work. You should google 'mod_rewrite' and 'regex' to find out more.
However mod_rewrite is typically used to get rid of GET arguments entirely. For example the URLs of the questions on this site do not have any get arguments, but the server translates the arguments between the slashes into GET arguments. This is considered better practice than simply than changing how the arguments look, as it is more user-friendly and SEO friendly.
Hope that helps.
$id = $id . ',' . $lang;
<a href="?<?php echo $id; ?>">
(NOTE: This is a follow up to a previous question, How to pass an array within a query string?, where I asked about standard methods for passing arrays within query strings.)
I now have some PHP code that needs to consume the said query string- What kind of query string array formats does PHP recognize, and do I have to do anything special to retrieve the array?
The following doesn't seem to work:
Query string:
?formparts=[a,b,c]
PHP:
$myarray = $_GET["formparts"];
echo gettype($myarray)
result:
string
Your query string should rather look like this:
?formparts[]=a&formparts[]=b&formparts[]=c
If you're dealing with a query string, you are looking at the $_GET variable. This will contain everything after the ? in your previous question.
So what you will have to do is pretty much the opposite of the other question.
$products = array();
// ... Add some checking of $_GET to make sure it is sane
....
// then assign..
$products = explode(',', $_GET['pname']);
and so on for each variable. I must give you a full warning here, you MUST check what comes through the $_GET variable to make sure it is sane. Otherwise you risk having your site compromised.
I'm trying to change a variable name in a query string, so it's usable by my PHP code.
The query gets posts from an external system, so I can't control that they are posting a variable name with a space in it. And that makes it impossible for me to use the PHP $_GET function.
I need to change variable%20name to ?new1
And I need to change variable2 to new2
There are many variables passed in the query, but only these two need to be changed. The rest can stay the same or even disappear.
So ?variable%20name=abc&variable2=xyz
Needs to end up as ?new1=abc&new2=xyz
Also, they may not be in this order and there may be more variables
So ?variable%20name=abc&blah=123&blah2=456&variable2=xyz
Could end up as ?new1=abc&new2=xyz
OR as ?new1=abc&blah=123&blah2=456&new2=xyz
Either way would be fine!
Please give me the mod_rewrite rule that will fix this.
Thank you in advance!
Parsing the query string with mod_rewrite is a bit of a pain, has to be done with RewriteCond and using %n replacements in a subsequent RewriteRule, probably easier to manually break up the original query string in PHP.
The full query string can be found (within PHP) in $_SERVER['QUERY_STRING'].
You can split it up using preg_split() or explode(), first on &, then on =, to get key/value pairs.
Using custom%20cbid=123&blahblahblah&name=example as an example.
$params = array();
foreach (explode("&", $_SERVER['QUERY_STRING']) as $cKeyValue) {
list ($cKey, $cValue) = explode('=', $cKeyValue, 2);
$params[urldecode($cKey)] = urldecode($cValue);
}
// Would result in:
$params = array('custom cbid' => 123,
'blahblahblah' => NULL,
'name' => example);
How come when I echo $p, the variable which Im trying to fetch using this loop doesnt get displayed in the path.
$name_image2="picture.jpg";
for ($i=2; $i<=$nr_of_pics; $i++){
$img='name_image'.$i;
echo $$img; gives me this: 'picture.jpg' which is correct.
but when echoing $p like this:
$p="/SV/main/temp_images/$$img"; echo $p;
I get this: SV/main/temp_images/name_image2 --> the variable 'name_image2' doesnt get called here, why?
I want it to say: SV/main/temp_images/picture.jpg
Thanks
$p = "/SV/main/temp_images/" . $$img;
Ought to fix it.
Also, I would recommend learning how to use arrays. They are a much better way to have a set of data instead of variable variables.
Try $p="/SV/main/temp_images/{${$img}}";
When PHP is parsing the string and comes to a $, it looks at the next character to see if it makes a valid variable name. If not, it moves on. In this case, that means that the second $ is correctly interpreted, but the first one has already been passed by. The answer is to enclose the inner expression in brackets, so that it will be parsed before the outer one is.