Hi there, i have been trying different methods and i wonder if somebody could explain to me how i would perform a comparison on two arrays for example
I have two arrays above, and i want to something like this
the code above does not work, but hopefully, you'll get from it the general idea of what im trying to do.. the line that is bugging me is the one directly under the "for" statement ....i know that line is screwed but i cant seem to work out how to test the existence of the $name variable in the other array
its probably a really simple fix to my above code but any help on this would be greatly appreciated
Last edited by hcclnoodles; 09-06-2009 at 04:28 PM..
Is there anyway that I can compare two Arrays to see if any new strings have been added in them? eg:
Array 1: Joe Bob Jane
Array 2: Joe Bob Jane Greg
It would then output a new array with the changes:
Array 3: Greg
I'm not very good at shell scripting, and my google and forum searches... (4 Replies)
I want to append a decimal number to a string. But I want to restrict the number to only 2 decimal points
for e.g:
my $output = "\n The number is = ";
my $number = 2.3333333;
$output = $output . $number;
But I want the $output as: "The number is = 2.33"; and not 2.3333333
(I do not... (1 Reply)
Hi there,
im having issue with comparing two variables, in a bash script.
im trying to do the following:
- get a word from user 1
- split the word into array
- get a character from user2
trying to compare the character entered by user 2 with every single character in the array... (2 Replies)
Hi all,
I am trying to compare two arrays in perl using the following code.
foreach $item (@arrayA){
push(@arrayC, $item) unless grep(/$item/, @arrayB); ... (1 Reply)
I am totally new to perl. I am modifying someone else's script. I have the following output:
# ./some-perlscript
A
B
C
D
E
B - E, is generated through the print command that I put in the script. I want to remove A, it seems it is generated automatically by a custom OS it is querying when... (3 Replies)
if i declare both but don't input any variables what values will the int array and file pointer array have on default, and if i want to reset any of the elements of both arrays to default, should i just set it to 0 or NULL or what? (1 Reply)
Problem
Part 1.
Gather data from linux server and output to a file named data_DDMMYY
Output file must contain the file name and size
Part 2.
Compare todays data_DDMMYY to yesterdays data_DDMMYY and output results to a file named difference_DDMMYY
Output file must show the difference in... (3 Replies)
Hi ,
I just write a simple function to read the file line by line.
But when I run it it says out of memory.
I am not sure about the root cause, Can someone help me out of this?
:D
#! /usr/bin/perl
use strict;
sub checkAPs{
my $NDPDir = "/home/eweiqqu/NCB/NDP_files/";
... (1 Reply)
I'm trying to compare 2 array and print the difference at a 3rd file. However how am i going to compare this 2 arrays by ignoring certain patterns:
For example:
1st array contains:
ctahci
cptcsa0
ctsata:25:seed
cptcsa1:50:seed
ctsata_1:25:seed
2nd array contains:
cptcsa0
ctsata... (0 Replies)
Hello,
I'm completely new to Perl and I'm just looking for a quick answer to some code I'm trying to come up with. I'm trying to access a website, part of the URL I want the user to be able to define via standard input. As you can see below I'm still trying to get the syntax.
... (2 Replies)
Discussion started by: wxornot
2 Replies
LEARN ABOUT PHP
array_diff_uassoc
ARRAY_DIFF_UASSOC(3) 1 ARRAY_DIFF_UASSOC(3)array_diff_uassoc - Computes the difference of arrays with additional index check which is performed by a user supplied callback functionSYNOPSIS
array array_diff_uassoc (array $array1, array $array2, [array $...], callable $key_compare_func)
DESCRIPTION
Compares $array1 against $array2 and returns the difference. Unlike array_diff(3) the array keys are used in the comparison.
Unlike array_diff_assoc(3) an user supplied callback function is used for the indices comparison, not internal function.
PARAMETERS
o $array1
- The array to compare from
o $array2
- An array to compare against
o $...
- More arrays to compare against
o $key_compare_func
- The comparison function must return an integer less than, equal to, or greater than zero if the first argument is considered to
be respectively less than, equal to, or greater than the second.
int callback (mixed $a, mixed $b)
RETURN VALUES
Returns an array containing all the entries from $array1 that are not present in any of the other arrays.
EXAMPLES
Example #1
array_diff_uassoc(3) example
The "a" => "green" pair is present in both arrays and thus it is not in the output from the function. Unlike this, the pair 0 =>
"red" is in the output because in the second argument "red" has key which is 1.
<?php
function key_compare_func($a, $b)
{
if ($a === $b) {
return 0;
}
return ($a > $b)? 1:-1;
}
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "green", "yellow", "red");
$result = array_diff_uassoc($array1, $array2, "key_compare_func");
print_r($result);
?>
The above example will output:
Array
(
[b] => brown
[c] => blue
[0] => red
)
The equality of 2 indices is checked by the user supplied callback function.
NOTES
Note
This function only checks one dimension of a n-dimensional array. Of course you can check deeper dimensions by using, for example,
array_diff_uassoc($array1[0], $array2[0], "key_compare_func");.
SEE ALSO array_diff(3), array_diff_assoc(3), array_udiff(3), array_udiff_assoc(3), array_udiff_uassoc(3), array_intersect(3), array_inter-
sect_assoc(3), array_uintersect(3), array_uintersect_assoc(3), array_uintersect_uassoc(3).
PHP Documentation Group ARRAY_DIFF_UASSOC(3)