SplFileObject::setMaxLineLen()

(PHP 5 >= 5.1.0, PHP 7)

Set maximum line length

说明

publicSplFileObject::setMaxLineLen(int $max_len): void

Sets the maximum length of a line to be read.

参数

$max_len

The maximum length of a line.

返回值

没有返回值。

错误／异常

Throws DomainException when$max_lenis less than zero.

范例

SplFileObject::setMaxLineLen() example

<?php
$file = new SplFileObject("lipsum.txt");
$file->setMaxLineLen(20);
foreach ($file as $line) {
    echo $line . "\n";
}
?>

Contents of lipsum.txt

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Duis nec sapien felis, ac sodales nisl.
Nulla vitae magna vitae purus aliquet consequat.

以上例程的输出类似于：

Lorem ipsum dolor s
it amet, consectetu
r adipiscing elit.
Duis nec sapien fel
is, ac sodales nisl
.
Nulla vitae magna v
itae purus aliquet 
consequat.

参见

• Classname::Method()