02-18-2008
help need to find the length of a variable
Hi frnds,
i have a file which contains multiple lines. each line size may come around 64MB. and i want to read line by line and nee to find the length of each line,
at present am doing it in the following way,
while read LINE
do
len=`expr length "$LINE"`
# and using the variable len for some purpose
done < file
the problem is, when the line size is big, i am getting error like parameter is too long.
is there any other way to find the length?
Thanks in advance,
- Raja.
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STR_PAD(3) 1 STR_PAD(3)
str_pad - Pad a string to a certain length with another string
SYNOPSIS
string str_pad (string $input, int $pad_length, [string $pad_string = " "], [int $pad_type = STR_PAD_RIGHT])
DESCRIPTION
This functions returns the $input string padded on the left, the right, or both sides to the specified padding length. If the optional
argument $pad_string is not supplied, the $input is padded with spaces, otherwise it is padded with characters from $pad_string up to the
limit.
PARAMETERS
o $input
- The input string.
o $pad_length
- If the value of $pad_length is negative, less than, or equal to the length of the input string, no padding takes place.
o $pad_string
-
Note
The $pad_string may be truncated if the required number of padding characters can't be evenly divided by the $pad_string's
length.
o $pad_type
- Optional argument $pad_type can be STR_PAD_RIGHT, STR_PAD_LEFT, or STR_PAD_BOTH. If $pad_type is not specified it is assumed to
be STR_PAD_RIGHT.
RETURN VALUES
Returns the padded string.
EXAMPLES
Example #1
str_pad(3) example
<?php
$input = "Alien";
echo str_pad($input, 10); // produces "Alien "
echo str_pad($input, 10, "-=", STR_PAD_LEFT); // produces "-=-=-Alien"
echo str_pad($input, 10, "_", STR_PAD_BOTH); // produces "__Alien___"
echo str_pad($input, 6 , "___"); // produces "Alien_"
?>
PHP Documentation Group STR_PAD(3)