I would like to append a string at the end of each row of a .dat file.
please give me some advice? Thanks.
e.g.
#content in abc.dat
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
...
#after running the script/command,... (7 Replies)
Hello All,
Plz help me with:
I have a csv file with data separated by ',' and optionally enclosed by "". I want to check each of these values to see if they exceed the specified string length, and if they do I want to cut just that value to the max length allowed and keep the csv format as it... (9 Replies)
Hello,
i have a file "Movie.ini" looking e.g. like follows
* MOVIE A
bla bla
MOVIE B
blubb blubb
MOVIE C
I'd like to read the file "Movie.ini" with cat and grep and check whether it includes the string MOVIE only with a '*' at the beginnig.
By doing
"cat Movie.ini| grep MOVIE... (14 Replies)
I'm getting the input row in this format it contains 2 alphabets followed by numbers between 1 and 7 and again 2 alphabets followed by numbers between 1 and 7.
Now I need to parse this input into several output rows in this format 2 alphabets followed by each number occurrence
suppose... (5 Replies)
1)I need to write a script which ftps 3 files to a unix box,
2)once the files are ftped i need to check the number of rows in each file and compare it with the data (no of rows) coming in a manifest file, if the number of rows in each file matches the data coming in manifest file, then i need to... (3 Replies)
Hi am using unix aix
I have tried using awk but am getting only output = x ,its not incrementing next output
set -A var1 vv qa za
ct=0
i=3
while
do
var1=`echo ${var1}`
count=`awk ' NR==$i++ {print;exit}' ${.txt} | cut -c5 `
echo $count
let ct=ct+1
done (6 Replies)
I want to append file with a string but before doing that i want to check if this string already exist in that file.I tried with grep on Solaris 10 but unsuccessful.Man pages from grep seems to suggest if the string is found command status will be 0 and if not 1.But i am not finding it.May be i... (2 Replies)
Hi,
I have file with values as below
1~ab~456~ac:bd:de:ef~yyyy-mm-dd
2~cd~458~af:fg:ty:er:ty:uj:io:~yyyy-mm-dd
I want the o/p as for frist row
1~ab~456~ac~yyyy-mm-dd
1~ab~456~bd~yyyy-mm-dd
1~ab~456~de~yyyy-mm-dd
1~ab~456~ef~yyyy-mm-dd
and for the second row
2~cd~458~af~yyyy-mm-dd... (4 Replies)
Hi,
I have a requirement that has 50-60 million records that we need to split a delimited string (Delimeter is newline) into rows.
Source Date:
SerialID UnidID GENRE
100 A11 AAAchar(10)BBB
200 B11 CCCchar(10)DDD(10)ZZZZ
Field 'GENRE' is a string with new line as delimeter and not sure... (5 Replies)
Discussion started by: techmoris
5 Replies
LEARN ABOUT PHP
substr
SUBSTR(3) 1 SUBSTR(3)substr - Return part of a stringSYNOPSIS
string substr (string $string, int $start, [int $length])
DESCRIPTION
Returns the portion of $string specified by the $start and $length parameters.
PARAMETERS
o $string
- The input string. Must be one character or longer.
o $start
- If $start is non-negative, the returned string will start at the $start'th position in $string, counting from zero. For
instance, in the string ' abcdef', the character at position 0 is ' a', the character at position 2 is ' c', and so forth. If
$start is negative, the returned string will start at the $start'th character from the end of $string. If $string is less than or
equal to $start characters long, FALSE will be returned.
Example #1
Using a negative $start
<?php
$rest = substr("abcdef", -1); // returns "f"
$rest = substr("abcdef", -2); // returns "ef"
$rest = substr("abcdef", -3, 1); // returns "d"
?>
o $length
- If $length is given and is positive, the string returned will contain at most $length characters beginning from $start (depend-
ing on the length of $string). If $length is given and is negative, then that many characters will be omitted from the end of
$string (after the start position has been calculated when a $start is negative). If $start denotes the position of this trunca-
tion or beyond, false will be returned. If $length is given and is 0, FALSE or NULL, an empty string will be returned. If
$length is omitted, the substring starting from $start until the end of the string will be returned.
Example #2
Using a negative $length
<?php
$rest = substr("abcdef", 0, -1); // returns "abcde"
$rest = substr("abcdef", 2, -1); // returns "cde"
$rest = substr("abcdef", 4, -4); // returns false
$rest = substr("abcdef", -3, -1); // returns "de"
?>
RETURN VALUES
Returns the extracted part of $string; or FALSE on failure, or an empty string.
CHANGELOG
+--------------+---------------------------------------------------+
| Version | |
| | |
| | Description |
| | |
+--------------+---------------------------------------------------+
|5.2.2 - 5.2.6 | |
| | |
| | If the $start parameter indicates the position |
| | of a negative truncation or beyond, false is |
| | returned. Other versions get the string from |
| | start. |
| | |
+--------------+---------------------------------------------------+
EXAMPLES
Example #3
Basic substr(3) usage
<?php
echo substr('abcdef', 1); // bcdef
echo substr('abcdef', 1, 3); // bcd
echo substr('abcdef', 0, 4); // abcd
echo substr('abcdef', 0, 8); // abcdef
echo substr('abcdef', -1, 1); // f
// Accessing single characters in a string
// can also be achieved using "square brackets"
$string = 'abcdef';
echo $string[0]; // a
echo $string[3]; // d
echo $string[strlen($string)-1]; // f
?>
Example #4
substr(3) casting behaviour
<?php
class apple {
public function __toString() {
return "green";
}
}
echo "1) ".var_export(substr("pear", 0, 2), true).PHP_EOL;
echo "2) ".var_export(substr(54321, 0, 2), true).PHP_EOL;
echo "3) ".var_export(substr(new apple(), 0, 2), true).PHP_EOL;
echo "4) ".var_export(substr(true, 0, 1), true).PHP_EOL;
echo "5) ".var_export(substr(false, 0, 1), true).PHP_EOL;
echo "6) ".var_export(substr("", 0, 1), true).PHP_EOL;
echo "7) ".var_export(substr(1.2e3, 0, 4), true).PHP_EOL;
?>
The above example will output:
1) 'pe'
2) '54'
3) 'gr'
4) '1'
5) false
6) false
7) '1200'
ERRORS /EXCEPTIONS
Returns FALSE on error.
Example #5
<?php
var_dump(substr('a', 1)); // bool(false)
?>
SEE ALSO strrchr(3), substr_replace(3), preg_match(3), trim(3), mb_substr(3), wordwrap(3), String access and modification by character.
PHP Documentation Group SUBSTR(3)