SplTempFileObject::__construct

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

SplTempFileObject::__construct — Construct a new temporary file object

说明

public SplTempFileObject::__construct(int $maxMemory = 2 * 1024 * 1024)

Construct a new temporary file object.

参数

maxMemory

The maximum amount of memory (in bytes, default is 2 MB) for the temporary file to use. If the temporary file exceeds this size, it will be moved to a file in the system's temp directory.

If maxMemory is negative, only memory will be used. If maxMemory is zero, no memory will be used.

错误／异常

Throws a RuntimeException if an error occurs.

范例

示例 #1 SplTempFileObject() example

This example writes a temporary file in memory which can be written to and read from.


<?php
$temp = new SplTempFileObject();
$temp->fwrite("This is the first line\n");
$temp->fwrite("And this is the second.\n");
echo "Written " . $temp->ftell() . " bytes to temporary file.\n\n";

// Rewind and read what was written
$temp->rewind();
foreach ($temp as $line) {
    echo $line;
}
?>

以上例程的输出类似于：

Written 47 bytes to temporary file.

This is the first line
And this is the second.

参见

SplFileObject
PHP input/output streams (for php://temp and php://memory)

add a note

User Contributed Notes 1 note

down

larry dot laski at gmail dot com ¶

7 years ago


Noting that when the tmp file exceeds memory limitations and is written to the system temp directory, it is deleted upon completion of the script it was initially created in. At least that is what I have seen and wanted to document for others since it wasn't clear.

add a note

官方地址：https://www.php.net/manual/en/spltempfileobject.construct.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络数据库 JAVA 面试 NoSQL C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 PHP 8.1 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 ADORecordSet对象 adodb手册 opcache预加载 Composer的Packagist资源 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet PHP json解析（json_decode）页面工具 mysql面试题 php中几种注释规范 [原创]诡异的php-fpm超时问题纯php实现DES以及TripleDES加密算法 php 修改图片大小支持php7的性能采集扩展 PHP mkdir()写出来的权限与mode值不符合

略微加速

PHP官方手册 - 互联网笔记

SplTempFileObject::__construct

说明

参数

错误／异常

范例

参见

User Contributed Notes 1 note