09-30-2009
sed substitution
Using sed I'm trying to replace 'string' with '[[string]]' while retaining case and ignoring words with 'string' in it along with additional characters like 'strings' and those which already contain the [[]] wrapper. I'm hoping to do it with sed and the right expression, if possible.
Example:
Apple apple apples applet [[apple]]
In this example I would only want to convert 'Apple' to '[[Apple]]' and 'apple' to '[[apple]]' ignoring 'apples', 'applet' and '[[apple]]. I can substitue Apple but I lose my 'A' as it's changed to 'a.'
I'm attempting to autotag pages in my wiki so in the above example 'apples' and 'applet' don't represent existing pages and [[apple]] is already tagged.
Any ideas or has anybody been down this path before and already know I'm chasing a phantom?
Thanks
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KEY(3) 1 KEY(3)
key - Fetch a key from an array
SYNOPSIS
mixed key (array &$array)
DESCRIPTION
key(3) returns the index element of the current array position.
PARAMETERS
o $array
- The array.
RETURN VALUES
The key(3) function simply returns the key of the array element that's currently being pointed to by the internal pointer. It does not
move the pointer in any way. If the internal pointer points beyond the end of the elements list or the array is empty, key(3) returns NULL.
EXAMPLES
Example #1
key(3) example
<?php
$array = array(
'fruit1' => 'apple',
'fruit2' => 'orange',
'fruit3' => 'grape',
'fruit4' => 'apple',
'fruit5' => 'apple');
// this cycle echoes all associative array
// key where value equals "apple"
while ($fruit_name = current($array)) {
if ($fruit_name == 'apple') {
echo key($array).'<br />';
}
next($array);
}
?>
The above example will output:
fruit1<br />
fruit4<br />
fruit5<br />
SEE ALSO
current(3), next(3).
PHP Documentation Group KEY(3)