C does not change what variables do depending on their type, or do anything for you when you ask it to convert one type to another. At best, it will ball it up and cram it through the mail slot, i.e. take you completely literally rather than doing the extra work you wanted.
So, if you want the string to be split, you're going to have to tell it to split it.
strtok is fairly good at doing that. It breaks strings apart on a list of letters, any letter in the list is considered a separator. (I add \n to remove newlines from the end while its at it.)
Two caveats:
It modifies buf. For example, the line a:b:c:d:e\n would become a\0b\0c\0d\0e\0. So you can't call it on anything you can't modify, i.e. strtok("a:b:c:d:e", ":"); would crash.
It returns pointers to things inside buf. Every time you overwrite buf[], i.e. every time you call fgets(), all the pointers strtok() gave you last time will point anywhere or nowhere.
Last edited by Corona688; 12-19-2014 at 05:48 PM..
These 2 Users Gave Thanks to Corona688 For This Post:
I try to get the month (of last save) and the filename into a variable, is this possible ?
something like this :
for month in `ls -la | awk '{print $6}'`
do
if ]
then
a=filename of the matching file
cp $a /Sep
fi
thanks,
Steffen (1 Reply)
Hi,
Hi, I run the command:
hostname to get the host back from the server: db201
Now, I need to take that result and set it to a variable. Can anyone help me with this?? I need to be able to use the same script on multiple servers so I do not want to hardcode the hostname result into... (1 Reply)
Hi
Can anybody tell me how can I dump the results of execution of a command into array form? For example, I want to execute:
and put each part of the result in an array element:
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Hi,
In a kshell , i need to compare the results of two array .
each Non-match value should copy to a new array.
For example:
==========
Array one contain the following values:
A
B
C
Array two contain the following values:
C
F
A
E
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Requirement 1) I need to execute 15 SQL queries in oracle through linux script. All these query results needs to be stored in array variables.
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done
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Good morning all,
This is the file name in question OD_Orders_2019-02-19.csv
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Discussion started by: Ibrahim A
2 Replies
LEARN ABOUT PHP
strtok
STRTOK(3) 1 STRTOK(3)strtok - Tokenize stringSYNOPSIS
string strtok (string $str, string $token)
DESCRIPTION
string strtok (string $token)
strtok(3) splits a string ($str) into smaller strings (tokens), with each token being delimited by any character from $token. That is, if
you have a string like "This is an example string" you could tokenize this string into its individual words by using the space character as
the token.
Note that only the first call to strtok uses the string argument. Every subsequent call to strtok only needs the token to use, as it keeps
track of where it is in the current string. To start over, or to tokenize a new string you simply call strtok with the string argument
again to initialize it. Note that you may put multiple tokens in the token parameter. The string will be tokenized when any one of the
characters in the argument are found.
PARAMETERS
o $str
- The string being split up into smaller strings (tokens).
o $token
- The delimiter used when splitting up $str.
RETURN VALUES
A string token.
EXAMPLES
Example #1
strtok(3) example
<?php
$string = "This is an example
string";
/* Use tab and newline as tokenizing characters as well */
$tok = strtok($string, "
");
while ($tok !== false) {
echo "Word=$tok<br />";
$tok = strtok("
");
}
?>
The behavior when an empty part was found changed with PHP 4.1.0. The old behavior returned an empty string, while the new, correct,
behavior simply skips the part of the string:
Example #2
Old strtok(3) behavior
<?php
$first_token = strtok('/something', '/');
$second_token = strtok('/');
var_dump($first_token, $second_token);
?>
The above example will output:
string(0) ""
string(9) "something"
Example #3
New strtok(3) behavior
<?php
$first_token = strtok('/something', '/');
$second_token = strtok('/');
var_dump($first_token, $second_token);
?>
The above example will output:
string(9) "something"
bool(false)
NOTES
Warning
This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on
Booleans for more information. Use the === operator for testing the return value of this function.
SEE ALSO split(3), explode(3).
PHP Documentation Group STRTOK(3)