GNUPG_KEYINFO(3) 1 GNUPG_KEYINFO(3)gnupg_keyinfo - Returns an array with information about all keys that matches the given patternSYNOPSIS
array gnupg_keyinfo (resource $identifier, string $pattern)
DESCRIPTION PARAMETERS
o $identifier
-The gnupg identifier, from a call to gnupg_init(3) or gnupg.
o $pattern
- The pattern being checked against the keys.
RETURN VALUES
Returns an array with information about all keys that matches the given pattern or FALSE, if an error has occurred.
EXAMPLES
Example #1
Procedural gnupg_keyinfo(3) example
<?php
$res = gnupg_init();
$info = gnupg_keyinfo($res, 'test');
print_r($info);
?>
Example #2
OO gnupg_keyinfo(3) example
<?php
$gpg = new gnupg();
$info = $gpg -> keyinfo("test");
print_r($info);
?>
PHP Documentation Group GNUPG_KEYINFO(3)
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PREG_MATCH(3) 1 PREG_MATCH(3)preg_match - Perform a regular expression matchSYNOPSIS
int preg_match (string $pattern, string $subject, [array &$matches], [int $flags], [int $offset])
DESCRIPTION
Searches $subject for a match to the regular expression given in $pattern.
PARAMETERS
o $pattern
- The pattern to search for, as a string.
o $subject
- The input string.
o $matches
- If $matches is provided, then it is filled with the results of search. $matches[0] will contain the text that matched the full
pattern, $matches[1] will have the text that matched the first captured parenthesized subpattern, and so on.
o $flags
-$flags can be the following flag:
o PREG_OFFSET_CAPTURE - If this flag is passed, for every occurring match the appendant string offset will also be returned.
Note that this changes the value of $matches into an array where every element is an array consisting of the matched string
at offset 0 and its string offset into $subject at offset 1.
o $offset
- Normally, the search starts from the beginning of the subject string. The optional parameter $offset can be used to specify the
alternate place from which to start the search (in bytes).
Note
Using $offset is not equivalent to passing substr($subject, $offset) to preg_match(3) in place of the subject string,
because $pattern can contain assertions such as ^, $ or (?<=x). Compare:
<?php
$subject = "abcdef";
$pattern = '/^def/';
preg_match($pattern, $subject, $matches, PREG_OFFSET_CAPTURE, 3);
print_r($matches);
?>
The above example will output:
Array
(
)
while this example
<?php
$subject = "abcdef";
$pattern = '/^def/';
preg_match($pattern, substr($subject,3), $matches, PREG_OFFSET_CAPTURE);
print_r($matches);
?>
will produce
Array
(
[0] => Array
(
[0] => def
[1] => 0
)
)
RETURN VALUES preg_match(3) returns 1 if the $pattern matches given $subject, 0 if it does not, or FALSE if an error occurred.
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.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.6 | |
| | |
| | Returns FALSE if $offset is higher than $subject |
| | length. |
| | |
| 5.2.2 | |
| | |
| | Named subpatterns now accept the syntax |
| | (?<name>) and (?'name') as well as (?P<name>). |
| | Previous versions accepted only (?P<name>). |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
Find the string of text "php"
<?php
// The "i" after the pattern delimiter indicates a case-insensitive search
if (preg_match("/php/i", "PHP is the web scripting language of choice.")) {
echo "A match was found.";
} else {
echo "A match was not found.";
}
?>
Example #2
Find the word "web"
<?php
/* The in the pattern indicates a word boundary, so only the distinct
* word "web" is matched, and not a word partial like "webbing" or "cobweb" */
if (preg_match("/web/i", "PHP is the web scripting language of choice.")) {
echo "A match was found.";
} else {
echo "A match was not found.";
}
if (preg_match("/web/i", "PHP is the website scripting language of choice.")) {
echo "A match was found.";
} else {
echo "A match was not found.";
}
?>
Example #3
Getting the domain name out of a URL
<?php
// get host name from URL
preg_match('@^(?:http://)?([^/]+)@i',
"http://www.php.net/index.html", $matches);
$host = $matches[1];
// get last two segments of host name
preg_match('/[^.]+.[^.]+$/', $host, $matches);
echo "domain name is: {$matches[0]}
";
?>
The above example will output:
domain name is: php.net
Example #4
Using named subpattern
<?php
$str = 'foobar: 2008';
preg_match('/(?P<name>w+): (?P<digit>d+)/', $str, $matches);
/* This also works in PHP 5.2.2 (PCRE 7.0) and later, however
* the above form is recommended for backwards compatibility */
// preg_match('/(?<name>w+): (?<digit>d+)/', $str, $matches);
print_r($matches);
?>
The above example will output:
Array
(
[0] => foobar: 2008
[name] => foobar
[1] => foobar
[digit] => 2008
[2] => 2008
)
NOTES
Tip
Do not use preg_match(3) if you only want to check if one string is contained in another string. Use strpos(3) or strstr(3) instead
as they will be faster.
SEE ALSO
PCRE Patterns, preg_quote(3), preg_match_all(3), preg_replace(3), preg_split(3), preg_last_error(3).
PHP Documentation Group PREG_MATCH(3)