How can i array a string, in the format that $_POST does... kind of, well i have this kind of format coming in:
101=1&2020=2&303=3
(Incase your wondering, its the result of jQuery Sortable Serialize...
I want to run an SQL statement to update a field with the RIGHT side of the = sign, where its the left side of the equal sign? I know the SQL for this, but i wanted to put it in a format that i could use the foreach($VAR as $key=>$value) and build an sql statement from that.. as i dont know how many 101=1 there will be?
I just want to explode this in a way that $key = 101 and $value = 1
Sounds confusing ;)
Thanks so so much in advanced!!
See the parse_str function.
It's not the most intuitive function name in PHP but the function you're looking for is parse_str(). You can use it like this:
$myArray = array();
parse_str('101=1&2020=2&303=3', $myArray);
print_r($myArray);
One quick and dirty solution:
<?php
$str = "101=1&2020=2&303=3";
$VAR = array();
foreach(explode('&', $str) AS $pair)
{
list($key, $value) = each(explode('=', $pair));
$VAR[$key] = $value;
}
?>
parse_str($query_string, $array_to_hold_values);
$input = "101=1&2020=2&303=3";
$output = array();
$exp = explode('&',$input);
foreach($exp as $e){
$pair = explode("=",$e);
$output[$pair[0]] = $pair[1];
}
Explode on the & to get an array that contains [ 101=1 , 2020=2 , 303=3 ] then for each element, split on the = and push the key/value pair onto a new array.
Related
I have this string:
array(array('1','name1','1','0'),array('2','name2','0','1'),array('3','name3','0','1'),array('4','name4','1','1'),array('5','name5','1','0'));
Stored in $_POST['data']
The string Im receiving is via.load` function where the structure of the string is constructed like so.
I would like to convert it to a multidimensional array via php so I can loop through it easily
So far I`ve reached a workaround by modifying both the string and the method.
Now my string looks like this :
1,name1,1,0,|2,name2,0,1,|3,name3,0,1,|4,name4,1,1,|5,name5,1,0,|
And the method is this
$data2 = $_POST['data2']; /// get data
$data2 = substr_replace($data2 ,"", -2); // eliminate ,|
$data2 = $data2."|"; // add |
$one=explode("|",$data2); // create multidimensional array
$array = array();
foreach ($one as $item){
$array[] = explode(",",$item);
}
I can keep this solution but I would like to know if there is another way of doing it as first requested
There is a better and simple way. You just need to use a foreach loop inside foreach loop.
$data = array(
array('1','name1','1','0'),
array('2','name2','0','1'),
array('3','name3','0','1'),
array('4','name4','1','1'),
array('5','name5','1','0')
);
foreach( $data as $d ) {
foreach( $d as $value ) {
echo $value;
echo '<br />';
}
}
You can check the online Demo
To parse your original string you can use eval()
$string = 'array(array('1','name1','1','0'),array('2','name2','0','1'),array('3','name3','0','1'),array('4','name4','1','1'),array('5','name5','1','0'));';
eval('$array = '.$string);
But eval can/should be disabled on the server, because it comes with security issues.
What i would do is to use JSON, where you would POST the json encoding it with:
json_ecnode( $my_array );
and then decoding it:
$array = json_decode( $_POST['data'], true );
I tried searching for a quick fix to converting a comma separated key=>value string to an associative array but couldn't find any. So i had to make a quick fix myself.
ANTECEDENT
I generated an array of some form elements using Jquery, to be sent via ajax.
So I have something like:
var myarray = [];
var string1 = 'key1=>'+form['value1'].value; //and we have string2 and more
myarray.push(string1);
Then i sent "myarray" as data to the form handling script.
PROBLEM
Now i have an array to deal with in my php script. I have the following:
function($var,$data){
$string = $data('myarray'); //array created earlier with jquery
}
Which is the same as:
...
$string = array(0=>'key1=>value1',1=>'key2=>value2');
...
Meanwhle, what i need is:
...
$string = array('key1'=>'value1','key2'=>'value2');
...
SOLUTION
...
$string = $data('myarray');
$string1 = array();
foreach($string as $value){
$split = explode('=>',$value);
$string1[$split[0]]=$split[1];
}
...
Now i can access the value of each key as:
echo $string1['key1']; //gives value1
This solution can also be used in a situation where you have:
$string = 'key1=>value1,key2=>value2...';
$string = explode(',',$string); // same as $string = array('key1'=>'value1',...)
$string1 = array();
foreach($string as $value){
$split = explode('=>',$value);
$string1[$split[0]]=$split[1];
}
The solution is rather simpler than i expected but if you know a better way to make this kind of conversion, feel free to suggest.
You can add as key value pair in javascript. Then you don't need to do any operations, can access directly in PHP.
var myarray = {};
myarray['key1'] = form['value1'].value;
In PHP :
$arr = $data('myarray');
echo $arr['key1']
Use explode() to split up the string.
$string = 'key1=>value1,key2=>value2,key3=>value3';
$pairs = explode(',', $string);
$data = array();
foreach ($pairs as $pair) {
list($key, $value) = explode('=>', $pair);
$data[$key] = $value;
}
var_dump($data);
DEMO
Here is an example of what I am trying to accomplish:
$array['aaa']['bbb']['ccc'] = "value";
$subarray = "['bbb']['ccc']";
echo $array['aaa']$subarray; // these 2 echos should be the same
echo $array['aaa']['bbb']['ccc']; // these 2 echos should be the same
It should display the same as $array['aaa']['bbb']['ccc'] i.e., "value".
This doesnt work, of course. But is there some simple solution to this?
There could be some function and the $subarrayvalue may be used as a parametr and/or as an array itself like: $subarray = array('bbb','ccc'); I dont mind as long as it worsk.
You could try something like below.
$subarray = "['bbb']['ccc']";
$temp = parse_str("\$array['aaa']".$subarray);
echo $temp;
OR To ignore single quotes -
$subarray = "[\'bbb\'][\'ccc\']";
$temp = parse_str("\$array[\'aaa\']".$subarray);
echo $temp;
Also you may refer - http://php.net/manual/en/function.parse-str.php
Just try using array chunk function http://php.net/manual/en/function.array-chunk.php
here is what actually works!!
$array['aaa']['bbb']['ccc'] = "value";
$subarray = "['bbb']['ccc']";
$string = 'echo $array[\'aaa\']' . $subarray . ';';
eval($string);
I have many links with parameter number - value is numbers between 1-1000
http://mysite.com?one=2&two=4&number=2
http://mysite.com?one=2&two=4&four=4&number=124
http://mysite.com?one=2&three=4&number=9
http://mysite.com?two=4&number=242
http://mysite.com?one=2&two=4&number=52
How can i remove from this parameter and value with PHP? I would like receive:
http://mysite.com?one=2&two=4
http://mysite.com?one=2&two=4&four=4
http://mysite.com?one=2&three=4
http://mysite.com?two=4
http://mysite.com?one=2&two=4
Try this:
$str = 'http://mysite.com?one=2&two=4&number=2';
$url = parse_url($str);
parse_str($url['query'], $now );
unset($now['number']);
foreach($now as $key=>$value) :
if(is_bool($value) ){
$now[$key] = ($value) ? 'true' : 'false';
}
endforeach;
$options_string=http_build_query($now);
echo $url = 'http://mysite.com?'.$options_string;
Reference : PHP function to build query string from array - not http build query
Like this
$urls = '
http://mysite.com?one=2&two=4&number=2
http://mysite.com?one=2&two=4&four=4&number=124
http://mysite.com?one=2&three=4&number=9
http://mysite.com?two=4&number=242
http://mysite.com?one=2&two=4&number=52
';
echo '<pre>';
echo preg_replace('#&number=\d+#', '', $urls);
you can build a redirection after building a new URL with $_GET['one']
Use bellow steps,this is clear aproach
1- Parse the url into an array with parse_url()
2- Extract the query portion, decompose that into an array
3- Delete the query parameters you want by unset() them from the array
4- Rebuild the original url using http_build_query()
hope this help you
You could use parse_str() which parses the string into variables. In that way you can separate them easily
I wrote example of code.
<?php
$arr = array();
$arr[] = 'http://mysite.com?one=2&two=4&number=2';
$arr[] = 'http://mysite.com?one=2&two=4&four=4&number=124';
$arr[] = 'http://mysite.com?one=2&three=4&number=9';
$arr[] = 'http://mysite.com?two=4&number=242';
$arr[] = 'http://mysite.com?one=2&two=4&number=52';
function remove_invalid_arguments(array $array_invalid, $urlString)
{
$info = array();
parse_str($urlString, $info);
foreach($array_invalid as $inv)
if(array_key_exists($inv,$info)) unset($info[$inv]);
$ret = "";
$i = 0;
foreach($info as $k=>$v)
$ret .= ($i++ ? "&" : ""). "$k=$v"; //maybe urlencode also :)
return $ret;
}
//usage
$invalid = array('number'); //array of forbidden params
foreach($arr as $k=>&$v) $v =remove_invalid_arguments($invalid, $arr[1]);
print_r($arr);
?>
Working DEMO
If "&number=" is ALWAYS after the important parameters, I'd use str_split (or explode).
The more sure way is to use parse_url(),parse_str() and http_build_query() to break the URLs down and put them back together.
As per example of your url -
$s='http://mysite.com?one=2&two=4&number=2&number2=200';
$temp =explode('&',$s);
array_pop($temp);
echo $newurl = implode("&", $last);
Output is :http://mysite.com?one=2&two=4&number=2
Have a look at this one using regex: (as an alternative, preferably use a parser)
(.+?)(?:&number=\d+)
Assuming &number=2 is the last parameter. This regex will keep the whole url except the last parameter number
Now I got the string of an array, like this :
$str = "array('a'=>1, 'b'=>2)";
How can I convert this string into real array ? Is there any "smart way" to do that, other that use explode() ? Because the "string" array could be very complicated some time.
Thanks !
Use php's "eval" function.
eval("\$myarray = $str;");
i don't know a good way to do this (only evil eval() wich realy should be avoided).
but: where do you get that string from? is it something you can affect? if so, using serialize() / unserialize() would be a much better way.
With a short version of the array json_decode works
json_decode('["option", "option2"]')
But with the old version just like the OP's asking it doesn't. The only thing it could be done is using Akash's Answer or eval which I don't really like using.
json_decode('array("option", "option2")')
You could write the string to a file, enclosing the string in a function definition within the file, and give the file a .php extension.
Then you include the php file in your current module and call the function which will return the array.
You'd have to use eval().
A better way to get a textual representation of an array that doesn't need eval() to decode is using json_encode() / json_decode().
If you can trust the string, use eval. I don't remember the exact syntax, but this should work.
$arr = eval($array_string);
If the string is given by user input or from another untrusted source, you should avoid eval() under all circumstances!
To store Arrays in strings, you should possibly take a look at serialize and unserialize.
Don't use eval() in any case
just call strtoarray($str, 'keys') for array with keys and strtoarray($str) for array which have no keys.
function strtoarray($a, $t = ''){
$arr = [];
$a = ltrim($a, '[');
$a = ltrim($a, 'array(');
$a = rtrim($a, ']');
$a = rtrim($a, ')');
$tmpArr = explode(",", $a);
foreach ($tmpArr as $v) {
if($t == 'keys'){
$tmp = explode("=>", $v);
$k = $tmp[0]; $nv = $tmp[1];
$k = trim(trim($k), "'");
$k = trim(trim($k), '"');
$nv = trim(trim($nv), "'");
$nv = trim(trim($nv), '"');
$arr[$k] = $nv;
} else {
$v = trim(trim($v), "'");
$v = trim(trim($v), '"');
$arr[] = $v;
}
}
return $arr;
}