1)
________________
${string##substring}
It deletes the "longest" match of $substring from 'front' of $string.
_________________
2)
_________________________
${string%substring}
It deletes shortest match of $substring from 'back' of $string.
_________________________
Regards,
Jadu
Ok, I'm stumped and can't seem to find relevant info.
(I'm not even sure, I might have asked something similar before.):
I'm trying to use shell scripting/UNIX commands to extract URLs from a fairly large web page, with a view to ultimately wrapping this in PHP with exec() and including the... (2 Replies)
On OS 10.4.11
I have filenames like:
670711 SA T2 v1-1_DS_EF.doc
CT_670520 AM T1 v1-2_DS_EF.doc
CT_670716 - 2 SA T4 v1-2_DS_EF.doc
CT_670713 SA T3 v1-1_DS_EF.doc
670421 PA DYP1 v1-1_DS_EF.doc
CT_670425 PA DYP2 v1-1_DS_EF.doc
CT_670107 RA T3 v1-2_DS_EF.doc
CT_670521 AM T2 v1-2_DS_EF.doc... (3 Replies)
Hi,
I have looked all over for this. I am attempting to get a the substring of a string using sed since it seemed the best solution for this.
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I would like to extract the text between "and" and "or" (it could be anything, but... (2 Replies)
Hi Folks,
I am here with a simple doubt. I am having a flat file in which I want to replace the characters from say 5 to 15 as some text.
Flat file contains a single line.
For example
01MRRAJESH21000RAJESH INDUSTRIES
In the above line pos 16-21 is Rajesh, I want to search for the... (4 Replies)
Hi Gurus,I have a seemingly simple problem but struggling with it.It is as follows :
I/p string -
ABCDEFGHIJ20100909.txt
desired o/p -
AB,DEF,20100909,ABCDEFGHIJ20100909.txt
How to achieve it ?Thanks in advance.
Please use code tags, thank you (20 Replies)
Hi All,
I have a log file in which name and version of applications are coming in the following format
name
It may look like following, based on the name of the application and version:
XYZ OR xyz OR XyZ OR xyz
I want to separate out the name and version and store them into variables.... (4 Replies)
HI All,
I have a file which looks like below
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./Some_text/rel/fld/lib.a
./Some_text/deb/detail/lib.a
./Some_text/deb/err/lib.a
./Some_text/rel/prod/lib.a
./Some_text/rel/fld/lib.a
./Some_text/deb/detail/lib.a
./Some_text/deb/err/lib.a
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Greetings All,
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1234::group:user1,user2,user3,blah1,blah2,blah3
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Greetings.
I'm looking to isolate the first occurrence of an arbitrary substring which may be present at any particular line in a given file. The enclosing end markers for the target in our thought problem are string" and ". The complete string and surrounding text could look something like... (3 Replies)
Discussion started by: LinQ
3 Replies
LEARN ABOUT PHP
substr_replace
SUBSTR_REPLACE(3) 1 SUBSTR_REPLACE(3)substr_replace - Replace text within a portion of a stringSYNOPSIS
mixed substr_replace (mixed $string, mixed $replacement, mixed $start, [mixed $length])
DESCRIPTION substr_replace(3) replaces a copy of $string delimited by the $start and (optionally) $length parameters with the string given in $replace-
ment.
PARAMETERS
o $string
- The input string. An array of strings can be provided, in which case the replacements will occur on each string in turn. In
this case, the $replacement, $start and $length parameters may be provided either as scalar values to be applied to each input
string in turn, or as arrays, in which case the corresponding array element will be used for each input string.
o $replacement
- The replacement string.
o $start
- If $start is positive, the replacing will begin at the $start'th offset into $string. If $start is negative, the replacing will
begin at the $start'th character from the end of $string.
o $length
- If given and is positive, it represents the length of the portion of $string which is to be replaced. If it is negative, it rep-
resents the number of characters from the end of $string at which to stop replacing. If it is not given, then it will default to
strlen( $string ); i.e. end the replacing at the end of $string. Of course, if $length is zero then this function will have the
effect of inserting $replacement into $string at the given $start offset.
RETURN VALUES
The result string is returned. If $string is an array then array is returned.
EXAMPLES
Example #1
Simple substr_replace(3) examples
<?php
$var = 'ABCDEFGH:/MNRPQR/';
echo "Original: $var<hr />
";
/* These two examples replace all of $var with 'bob'. */
echo substr_replace($var, 'bob', 0) . "<br />
";
echo substr_replace($var, 'bob', 0, strlen($var)) . "<br />
";
/* Insert 'bob' right at the beginning of $var. */
echo substr_replace($var, 'bob', 0, 0) . "<br />
";
/* These next two replace 'MNRPQR' in $var with 'bob'. */
echo substr_replace($var, 'bob', 10, -1) . "<br />
";
echo substr_replace($var, 'bob', -7, -1) . "<br />
";
/* Delete 'MNRPQR' from $var. */
echo substr_replace($var, '', 10, -1) . "<br />
";
?>
Example #2
Using substr_replace(3) to replace multiple strings at once
<?php
$input = array('A: XXX', 'B: XXX', 'C: XXX');
// A simple case: replace XXX in each string with YYY.
echo implode('; ', substr_replace($input, 'YYY', 3, 3))."
";
// A more complicated case where each replacement is different.
$replace = array('AAA', 'BBB', 'CCC');
echo implode('; ', substr_replace($input, $replace, 3, 3))."
";
// Replace a different number of characters each time.
$length = array(1, 2, 3);
echo implode('; ', substr_replace($input, $replace, 3, $length))."
";
?>
The above example will output:
A: YYY; B: YYY; C: YYY
A: AAA; B: BBB; C: CCC
A: AAAXX; B: BBBX; C: CCC
NOTES
Note
This function is binary-safe.
SEE ALSO str_replace(3), substr(3), String access and modification by character.
PHP Documentation Group SUBSTR_REPLACE(3)