EventBuffer::search

(PECL event >= 1.2.6-beta)

EventBuffer::search — Scans the buffer for an occurrence of a string

Descrição

public EventBuffer::search( string $what , int $start = -1 , int $end = -1 ): mixed

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.

Parâmetros

what: String to search.
start: Start search position.
end: End search position.

Valor Retornado

Returns numeric position of the first occurrence of the string in the buffer, or false if string is not found.

Aviso

Esta função pode retornar o valor booleano false, mas também pode retornar um valor não booleano que pode ser avaliado como false. Leia a seção sobre Booleanos para mais informações. Use o operador === para testar o valor retornado por esta função.

Exemplos

Exemplo #1 EventBuffer::search() example

<?php
// Count total occurrences 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"));
?>

O exemplo acima produzirá algo semelhante a:

int(3)

Veja Também

EventBuffer::searchEol() - Scans the buffer for an occurrence of an end of line

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