How to upload avatar in php-PHP Problem-php.cn

How to upload avatar in php

王林

Release： 2023-03-13 10:32:02

Original

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php method to implement avatar upload: [

How to upload avatar in php

The operating environment of this article: windows10 system, php 7. Thinkpad t480 computer.

I recently needed to use the avatar upload function when working on a project, so I recorded the implementation process.

If we want to complete the avatar upload function, we need a php page, a We define the page as touxiang.php, and the other page as upload.php.

Look at the specific code:

1.touxiang.php

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>

<link href="bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet" type="text/css" />
<script src="bootstrap-3.3.7-dist/js/jquery-1.11.2.min.js"></script>
<script src="bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>

<style type="text/css">
#yl{ width:200px; height:200px; background-image:url(img/avatar.png); background-size:200px 200px;}
#file{ width:200px; height:200px; float:left; opacity:0;}
.modal-content{ width:500px;}
.kk{ margin-left:130px;}
</style>

</head>

<body>



<!-- 按钮触发模态框 -->
<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
    上传头像
</button>
<!-- 模态框（Modal） -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true">
                    ×
                </button>
                <h4 class="modal-title" id="myModalLabel">
                    上传头像
                </h4>
            </div>
            <div class="modal-body">
                <form id="sc" action="upload.php" method="post" enctype="multipart/form-data" target="shangchuan">

    <input type="hidden" name="tp" value="" id="tp" />

    <div id="yl" class="kk">
        <input type="file" name="file" id="file" onchange="document.getElementById(&#39;sc&#39;).submit()" />
    </div>



</form>

<iframe style="display:none" name="shangchuan" id="shangchuan">
</iframe>

            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">关闭
                </button>
                <!--<button type="button" class="btn btn-primary">
                    提交更改
                </button>-->

            </div>
        </div><!-- /.modal-content -->
    </div><!-- /.modal -->
</div>


</body>

<script type="text/javascript">

//回调函数,调用该方法传一个文件路径，该变背景图
function showimg(url)
{
    var div = document.getElementById("yl");
    div.style.backgroundImage = "url("+url+")";

    document.getElementById("tp").value = url;
}

</script>

</html>

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On this page we need to introduce a modal box and three files: bootstrap.min.css, jquery-1.11.2.min.js, bootstrap.min.js

2.upload.php

<?php

if($_FILES["file"]["error"])
{
    echo $_FILES["file"]["error"];
}
else
{
    if(($_FILES["file"]["type"]=="image/jpeg" || $_FILES["file"]["type"]=="image/png")&& $_FILES["file"]["size"]<1024000000)
    {
        $fname = "./img/".date("YmdHis").$_FILES["file"]["name"];

        $filename = iconv("UTF-8","gb2312",$fname);

        if(file_exists($filename))
        {
            echo "<script>alert(&#39;该文件已存在！&#39;);</script>";
        }
        else
        {
            move_uploaded_file($_FILES["file"]["tmp_name"],$filename);

            unlink($_POST["tp"]);

            echo "<script>parent.showimg(&#39;{$fname}&#39;);</script>";
        }

    }
}

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The effect is as follows:

How to upload avatar in php

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