Please, how do I extract an expression from a string?
For example, I have this string below:
RECEIPT_NO=5001809252729&PAYMENT_CODE=500858991537884262034&MERCHANT_CODE=0350000AFT&TRANS_AMOUNT=42990.0&TRANS_DATE=2018/09/25 14:04:28&TRANS_DESCR=Victor-300%20Level%20-001-
What I want to do is compare the value inputted by a user with the value in bold
How do I go about it using PHP?
I had tried using str_split('/[&]/', $string);, but I wasnt getting what I wanted. Please help.
Thanks.
You have a string in standard HTTP "query string" format (percent-encoded and &-separated key=value pairs). The easiest way to handle it is using PHP's built-in parse_str() function:
$items = [];
parse_str($string, $items);
echo $items["PAYMENT_CODE"];
If this function did not exist, you could reimplement it;
$items = [];
foreach (explode("&", $string) as $item) {
list($key, $val) = explode("=", $item, 2);
$items[urldecode($key)] = urldecode($val);
}
You must use explode() in PHP;
In your case like this :
$str = 'RECEIPT_NO=5001809252729&PAYMENT_CODE=500858991537884262034&MERCHANT_CODE=0350000AFT&TRANS_AMOUNT=42990.0&TRANS_DATE=2018/09/25 14:04:28&TRANS_DESCR=Victor-300%20Level%20-001-';
$arrayOfVars = explode('&',$str);
look at explode() documentation in PHP.net
Related
i got a piece of code that so far returns me data like this when i use print $result;
ssl_card_number=41**********1111
ssl_exp_date=0213
ssl_amount=132.86
ssl_salestax=0.00
ssl_invoice_number=5351353519500
ssl_result=0
ssl_result_message=APPROVED
ssl_txn_id=00000000-0000-0000-0000-00000000000
ssl_approval_code=123456
ssl_cvv2_response=P
ssl_avs_response=X
ssl_account_balance=0.00
ssl_txn_time=11/21/2012 12:38:20 PM
thats from view page source.
and the page itself shows it as :
ssl_card_number=41**********1111 ssl_exp_date=0213 ssl_amount=132.86 ssl_salestax=0.00 ssl_invoice_number=8601353519473 ssl_result=0 ssl_result_message=APPROVED ssl_txn_id=00000000-0000-0000-0000-00000000000 ssl_approval_code=123456 ssl_cvv2_response=P ssl_avs_response=X ssl_account_balance=0.00 ssl_txn_time=11/21/2012 12:37:54 PM
i need to be able to handle each of the "keys" in a better way and dont know how to explode them maybe ?
One possible approach:
parse_str(preg_replace('#\s+(?=\w+=)#', '&', $result), $array);
var_dump($array);
Explanation: preg_replace will turn all the whitespace before the param names into '&' symbol - making this string similar to the regular GET request url. Then parse_str (the function created specifically for parsing such urls) will, well, parse this string (sent as the first param), making an associative array of it.
In fact, you don't even have to use preg_replace here, if each param=value string begins from a new line; str_replace("\n", '&') should do the trick.
An alternative approach:
$pairs = preg_split('#\s+(?=\w+=)#', $x);
foreach ($pairs as $pair) {
list ($key, $value) = explode('=', $pair, 2);
$array[$key] = $value;
}
Here you first create an array of 'key-value pair' strings, then split each element by =: the first part would be the key, the second - the value.
You can use the regular expression reported by #raina77ow or you could use explodes (riskier):
<?php
$tmps = explode("\n",$result); //this gives you each line separate
foreach($tmps as $tmp){
list($key,$value) = explode('=',$tmp,2);
echo $key.' has value '.$value."\n";
//you can even create vars with the "key" if you are sure that they key is a "clean" string:
$$key=$value;
//or put everything into an array - similar to the regexp
$result_array[$key] = $value;
}
?>
I need a regular expression for PHP's preg_match that can process something along the lines of:
variable1=true&variable2=1,2,3&variable3="test"&variable4!=true&variable5!=4,5,6&variable!="test"
I would change to just something like json but this wouldn't support the backwards compatibility I need, any suggestions, the closest I got was something like:
/((\w+)(=|!=)("\w+"|true|false|\d+)*)/
Which is partly successful, any help would be great.
Using string functions
$string = 'variable1=true&variable2=1,2,3&variable3="test"&variable4!=true&variable5!=4,5,6&variable!="test"';
$pairs = explode('&', $string);
foreach ($pairs as $pair) {
if (strstr($pair, '!=')) {
list($key, $value) = explode('!=', $pair);
} else {
list($key, $value) = explode('=', $pair);
}
$values[$key] = $value;
}
View the output on codepad
This code first splits the string using &, so into key-value pairs.
After that, it loops through each pair and tries to split it again, first using !=, and if that fails, using =.
Using regex
preg_match_all('/((\w+)(=|!=)("\w+"|true|false|[\d\,]+)*)/', $string, $matches);
I added the brackets [...] around \d and an escaped comma \,.
There is actually a built-in function parse_str, exactly for this purpose.
There is no need for regex here.
I am trying to parse following string...
IN.Tags.Share({"count":180,"url":"http://domain.org"}
is my following approach correct to get the value of count?
$str = 'IN.Tags.Share({"count":180,"url":"http://domain.org"}';
$data = explode(':', $str);
$val = explode(',', $data[1]);
return $val[0];
Or is there any better way to handling this type of strings? I think it could be done using regex as well.
thanks.
If course I'm not sure if your format will be constant, but part of your string looks like JSON. If always like this, you could do:
$str = str_replace('IN.Tags.Share(', '', $str);
$values = json_decode($str);
echo $values->count;
I would suggest pulling out the JSON by applying this regex to the string: IN\.Tags\.Share\((.*)\. Pull out the first group, and use json_decode: http://php.net/manual/en/function.json-decode.php
That way, you can directly access the data. It will support complex data structures as well.
I have this query:
list[One]=1&list[Two]=2&list[Apple]=fruit
this is the regex I use to return the values in the brackets and after the equal sign
preg_match_all('/(?<query>list\[(?<pagename>.*?)\]\=(?<parent>.*?))/',$source,$array);
returns:
One=
Two=
Apple=
Values that come after the equal sign are missing. Where's my mistake?
By the way, this query is generated with jquery's serialize(). Is there a better method to parse the values?
As I made in a comment, you may want to look in to parse_str
However, if you change the final .*? to something like [^&]* then you'll probbaly have better luck (assuming this is a GET query string (or some facsimile) as & will have to be escaped from the sequence with %26)
(?<parent>.*?) matches an empty string, so the result ist 'correct'. Try (?<parent>[^&]+) instead:
preg_match_all('/(?<query>list\[(?<pagename>.*?)\]\=(?<parent>[^&]+))/',$source,$array);
Because you use the non-greedy ? for <parent>, it's not grabbing the values. Try the other answers or if you can count on the format list[<name>]=<value> then you can avoid using regex altogether.
$query = 'list[One]=1&list[Two]=2&list[Apple]=fruit';
$pieces = explode('&', $query);
$matches = array();
foreach ($pieces as $piece) {
list($key, $value) = explode('=', $piece);
$matches[substr($key, 5, -1)] = $value;
}
Below is the response I'm getting after posting to an API.... I don't think parse_url is going to cut it. Are there any built in PHP functions or better ways to turn this into an array? This is the output of var_dump
sting(163) "response=3&responsetext=Duplicate transaction REFID:115545335&authcode=&transactionid=&avsresponse=&cvvresponse=&orderid=&type=auth&response_code=300&processor_id="
Use parse_str() with the optional $arr parameter.
Parses str as if it were the query string passed via a URL
You are looking for parse_str.
It turns a query string into an associative array.
I propose :
$elements = explode('&', $input);
$data = array();
foreach($elements as $e) {
$d = explode('=', $e);
$data[$d[0]] = isset($d[1]) ? $d[1] : '';
}
But maybe there is a better way.