Good Morning,
I was wondering if anybody could tell me how to achieve the following, preferably with a little commenting for understanding.
I have 2 files, each with multiple rows with multiple columns.
I need to find each row where the value in column 1 of file 1 matches column 1... (10 Replies)
My current issue is dealing with two space delimited files.
The first file has column 1 as the sample ID's, then columns 2 - n as the observations. The second file has column 1 as the sample ID's, column 2 as the mother ID's, column 3 as the father ID's, column 4 as the gender, and column 5... (3 Replies)
Hello,
I have two files which are of the following format
File 1 which has two columns
Protein_ID Substitution
NP_997239 T53R
NP_060668 V267M
NP_058515 P856A
NP_001206 T55M
NP_006601 D371Y ... (2 Replies)
I have two files I want to match ids in the 5th column of the file 1 with the first column of the file 2 and get the description for the matched ids as shown in the output
sno nm no nm2 ID
1 cc 574372 yyyi |6810|51234|
2 bb 119721 nmjk |6810|51234|51179| ... (4 Replies)
Hi,
I have FileA with one column.
File B with 15 columns separated by comma delimiter.
I need to compare the FILEA value with all 15 columns of FILEB... if matches, need to return the 1st, 2nd column values of FILEB.
How to achieve this through shell script? Thanks in advance. (5 Replies)
I have the following format of input from multiple files
File 1
24.01 -81.01 1.0
24.02 -81.02 5.0
24.03 -81.03 0.0
File 2
24.01 -81.01 2.0
24.02 -81.02 -5.0
24.03 -81.03 10.0
I need to scan through the files and when the first 2 columns match I... (18 Replies)
Hello all, First post here. I did not notice a previous post to help me down the right path. I am looking to compare a column in a CSV file against another file (which is not a column match one for one) but more or less when a match is made, I would like to append a third column that contains a... (17 Replies)
Hi,
i have 2 files , the data i need to match is in masterfile and i need to pull out column 3 from master if column 1 and 2 match and output entire row to new file
I have tried with join and awk and i keep getting blank outputs or same file
is there an easier way than what i am... (4 Replies)
Discussion started by: axis88
4 Replies
LEARN ABOUT PHP
count
COUNT(3) 1 COUNT(3)count - Count all elements in an array, or something in an objectSYNOPSIS
int count (mixed $array_or_countable, [int $mode = COUNT_NORMAL])
DESCRIPTION
Counts all elements in an array, or something in an object.
For objects, if you have SPL installed, you can hook into count(3) by implementing interface Countable. The interface has exactly one
method, Countable::count, which returns the return value for the count(3) function.
Please see the Array section of the manual for a detailed explanation of how arrays are implemented and used in PHP.
PARAMETERS
o $array_or_countable
- An array or Countable object.
o $mode
- If the optional $mode parameter is set to COUNT_RECURSIVE (or 1), count(3) will recursively count the array. This is particu-
larly useful for counting all the elements of a multidimensional array.
Caution
count(3) can detect recursion to avoid an infinite loop, but will emit an E_WARNING every time it does (in case the array
contains itself more than once) and return a count higher than may be expected.
RETURN VALUES
Returns the number of elements in $array_or_countable. If the parameter is not an array or not an object with implemented Countable inter-
face, 1 will be returned. There is one exception, if $array_or_countable is NULL, 0 will be returned.
Caution
count(3) may return 0 for a variable that isn't set, but it may also return 0 for a variable that has been initialized with an empty
array. Use isset(3) to test if a variable is set.
EXAMPLES
Example #1
count(3) example
<?php
$a[0] = 1;
$a[1] = 3;
$a[2] = 5;
$result = count($a);
// $result == 3
$b[0] = 7;
$b[5] = 9;
$b[10] = 11;
$result = count($b);
// $result == 3
$result = count(null);
// $result == 0
$result = count(false);
// $result == 1
?>
Example #2
Recursive count(3) example
<?php
$food = array('fruits' => array('orange', 'banana', 'apple'),
'veggie' => array('carrot', 'collard', 'pea'));
// recursive count
echo count($food, COUNT_RECURSIVE); // output 8
// normal count
echo count($food); // output 2
?>
SEE ALSO is_array(3), isset(3), strlen(3).
PHP Documentation Group COUNT(3)