I have an array such as:
$var = array('hi','ho',rand(2,5));
What I would like to echo is the entire array, exactly as written.
Normally when you try a print_r, it shows as:
Array (
[0] => hi
[1] => ho
[2] => 3
)
But I want:
Array (
[0] => hi
[1] => ho
[2] => rand(2,5)
)
You can get this with file_get_contents, but is there any way to do so within the actual PHP file?
I don't think it's possible because when array is created, random value is assigned to element with index 2 and you cannot check how this value was created.
I don't think it's possible, since the rand is already evaluated as soon as you set the array to some variable.
A workaround would be the hold the expression as a string and then eval it when you need it. Like this:
$varStr = "array('hi','ho',rand(2,5))";
echo $varStr;
// when you actually need it
$var = eval($varStr);
However, this is almost never a good idea. Providing a use-case where you need this might help come up with a better solution.
Related
Here is the result on the page when using print_r($result);
Array
(
[result] => Array
(
[0] => Array
(
[username] => Elvis
)
)
)
I would like to pull this out of the array and use it as a PHP variable. I have tried extract, while loops and a variety of other solutions, but I am not finding the right syntax to make this happen. What is the easiest way? Thanks.
Try:
$var = $result['result'][0]['username'];
If the array is consistent, just like you showed it, then you just need
$username=$result['result'][0]['username'];
I am trying to convert indexed array to normal array. Basically what get is:
Array ( [0] => 14 [1] => 19 [2] => 20 )
And I need is:
Array(14,19,20);
I tried over Google but not information found. I think this kind of function isn't available in PHP, is there any? please let me know!
Thanks,
Asif
You're chasing shadows:
Both of the arrays you've shown are equal.
There is no such thing as an unindexed array in PHP.
But if you really want to be sure, use $newArray = array_values($array)
I'm using cakephp and am getting back a "double array" where it is giving me 2 arrays where it should be 1, I have looked into the issue as far as cakephp and can't figure it out and just want to move past this for now so I am wondering if anyone knows how to unset a second array if a variable has 2 arrays.. below is the print_r of the array, its just one variable that has this, which I find odd.. so I want to make it so there is not a 2nd set of duplicate values, if I do an array_push it pushes both values for that index into the resulting new array index so that won't work
one variable is equal to the following:
Array ( [0] => 42 [1] => 62 ) Array ( [0] => 42 [1] => 62 )
EDIT:
This is not an issue of my printing out the array twice accidentally, as I said above, with a foreach array_push of the variable, i end up with this, which is odd:
Array ( [0] => 4242 [1] => 6262 )
EDIT:
This is the cakephp database call that I am using, I know I didn't ask this in regards to cakephp but since some people think this is impossible i am posting this just so you can see what it does if you want
$specificfields_array = $this->Mymodel->find('list', array('fields' =>'Mymodel.id'),
'conditions' => array('emailgroup' => $categorynumber, 'sent' => '0');));
EDIT:
This is what a "foreach" array_push is:
$mynewarray = array();
foreach ($specificfields as $specificfields_current) {
array_push ($mynewarray, $specificfields_current);
}
A variable cannot "have two arrays". It can be one array that has two arrays nested. The scenario you describe is impossible (probably there are two print_r there or there is a < character hiding stuff – check the HTML source).
Can you post the controller, the model and the view file with your print_r calls to the http://bin.cakephp.org/ site and post the links back here so we can see all of your code?
I want to change the format of this array to match another one. One was pulled from a database, and the other was made using space delimted user input and then explode();
So here are the arrays I want to change, this is from the database (mysql_fetch_array). It grabs the single field from all rows.
Array
(
[name] => daniel
)
Array
(
[name] => alex
)
Array
(
[name] => richard
)
And here is what I want it to look like. This was the output of the user submitted values, space delimted and using PHPs explode() function.
Array
(
[0] => daniel
[1] => alex
[2] => david
)
What I want to be able to do is have these in the same format so that I can compare the two. The end goal is to be able to compare the two arrays (user input and database results), and create a final array containing only values that the user has inputted that the database doesn't already contain.
So using the data above this would be my final array:
Array
(
[0] => david
)
I would really appreciate help with the first bit, and if anyone else has a better way to achieve the end goal that would be a great extra bonus! (I get the feeling it might be easier to do this with SQL queries but I'm really confusing myself with these arrays)
Thanks!
array_diff($user_array, $database_array);
You can construct the $database_array like this:
$database_array = array();
//assuming each db record has only one value
//while there are still results in the db, do:
$database_array[] = reset($fetched_record);
See array_diff.
I'm trying to call to a specific part of an array with the key # and it's not working. I can output the array and see it...
Array
(
[6] => Array
(
[0] => user#domain.com
[1] => user#domain.com
)
[7] => Array
(
[0] => user#domain.com
[1] => user#domain.com
)
[8] => Array
(
[0] => user#domain.com
[1] => user#domain.com
)
)
This array is $emailDB. I can call to the array manually with $emailDB[7] and it works, but if my call is dynamic like this it won't work...
<?php
$value = 7;
print_r($emailDB[$value]);
?>
I've never had an issue like this with an array so it's very odd. What really sucks is I'm under deadline with a form not working on a client's site...joy.
We tried this with no luck...
<?php
$value = 7;
print_r($emailDB[intval($value)]);
?>
I thought intval() would assist but it did not.
You're post implies a bug in php itself, which I highly doubt. What's more likely is that what you posted doesn't properly represent the code you're running.
Why don't try this. Make a brand new empty php file. Hardcode the array keys and values and assign them to the $emailDB variable, and then try
$value = 7;
print_r($emailDB[$value]);
You will see you don't have the problem that you claim. You have now started the debugging process, and now you can look at the working, and non working code to compare the difference.
Well, you are echoing an Array, which I assume is printing "Array" onto your screen. If you want to echo the actual contents of the array, you need to use print_r($array) or echo print_r($array, true). You can also try putting the value in quotes, like $emailDB["{$value}"] to see if that works, I sometimes have troubles with integers not going into things properly.
I agree with you all. It had to have been something whacky with how we were pulling in the data somehow. It was a tab-separated file we were exploding. I just re-wrote the whole thing entirely and imported the data into MySQL and all was well.
In hindsight, I have a sneaking suspicion it was a trim() command that was needed and likely nothing more. Dang it...too late, but I learned something about checking over the code for those types of things.