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    SplFileObject::setMaxLineLen

    (PHP 5 >= 5.1.0, PHP 7, PHP 8)

    SplFileObject::setMaxLineLen — Set maximum line length

    说明

    public SplFileObject::setMaxLineLen(int $maxLength): void

    Sets the maximum length of a line to be read.

    参数

    maxLength

    The maximum length of a line.

    返回值

    没有返回值。

    错误／异常

    Throws DomainException when maxLength is less than zero.

    示例

    示例 #1 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.

    以上示例的输出类似于：

    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

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