EventBuffer::search
(PECL event >= 1.2.6-beta)
EventBuffer::search — Scans the buffer for an occurrence of a string
Описание
Scans the buffer for an occurrence of the string
what
. It returns numeric position of the string, or FALSE if the string was
not found.
If the
start
argument is provided, it points to the position at which the search should
begin; otherwise, the search is performed from the start of the string. If
end
argument provided, the search is performed between start and end buffer
positions.
Список параметров
-
what -
String to search.
-
start -
Start search position.
-
end -
End search position.
Возвращаемые значения
Returns numeric position of the first occurance of the string in the
buffer, or FALSE if string is not found.
Эта функция
может возвращать как boolean FALSE, так и не-boolean значение,
которое приводится к FALSE. За более подробной информацией обратитесь к разделу
Булев тип. Используйте оператор === для проверки значения,
возвращаемого этой функцией.
Примеры
Пример #1 EventBuffer::search() example
<?php
// Count total occurances of 'str' in 'buf'
function count_instances($buf, $str) {
$total = 0;
$p = 0;
$i = 0;
while (1) {
$p = $buf->search($str, $p);
if ($p === FALSE) {
break;
}
++$total;
++$p;
}
return $total;
}
$buf = new EventBuffer();
$buf->add("Some string within a string inside another string");
var_dump(count_instances($buf, "str"));
?>
Результатом выполнения данного примера будет что-то подобное:
int(3)
Смотрите также
- EventBuffer::searchEol() - Scans the buffer for an occurrence of an end of line
- Функция EventBuffer::add() - Append data to the end of an event buffer
- Функция EventBuffer::addBuffer() - Move all data from a buffer provided to the current instance of EventBuffer
- EventBuffer::appendFrom
- Функция EventBuffer::__construct() - Constructs EventBuffer object
- Функция EventBuffer::copyout() - Copies out specified number of bytes from the front of the buffer
- EventBuffer::drain
- Функция EventBuffer::enableLocking() - Описание
- Функция EventBuffer::expand() - Reserves space in buffer
- Функция EventBuffer::freeze() - Prevent calls that modify an event buffer from succeeding
- Функция EventBuffer::lock() - Acquires a lock on buffer
- Функция EventBuffer::prepend() - Prepend data to the front of the buffer
- Функция EventBuffer::prependBuffer() - Moves all data from source buffer to the front of current buffer
- EventBuffer::pullup
- Функция EventBuffer::read() - Read data from an evbuffer and drain the bytes read
- Функция EventBuffer::readFrom() - Read data from a file onto the end of the buffer
- Функция EventBuffer::readLine() - Extracts a line from the front of the buffer
- Функция EventBuffer::search() - Scans the buffer for an occurrence of a string
- Функция EventBuffer::searchEol() - Scans the buffer for an occurrence of an end of line
- Функция EventBuffer::substr() - Substracts a portion of the buffer data
- Функция EventBuffer::unfreeze() - Re-enable calls that modify an event buffer
- Функция EventBuffer::unlock() - Releases lock acquired by EventBuffer::lock
- Функция EventBuffer::write() - Write contents of the buffer to a file or socket
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