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  • php上传图片预览,放大,裁剪

    <!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 content="text/html; charset=UTF-8" http-equiv="Content-Type"> 
    <link rel="stylesheet" type="text/css" href="css/imgareaselect-default.css" /> 
    <script type="text/javascript" src="scripts/jquery.min.js"></script> 
    <script type="text/javascript" src="scripts/jquery.imgareaselect.pack.js"></script> 
    <script type="text/javascript"> 
    function preview(img, selection) { 
    $('#selectbanner').data('x',selection.x1); 
    $('#selectbanner').data('y',selection.y1); 
    $('#selectbanner').data('w',selection.width); 
    $('#selectbanner').data('h',selection.height); 

    var scaleX = 100 / (selection.width || 1); 
    var scaleY = 100 / (selection.height || 1); 
    $('#ferret > img').css({ 
    Math.round(scaleX * 512) + 'px',//512、390是你上传图片的宽高 
    height: Math.round(scaleY * 390) + 'px', 
    marginLeft: '-' + Math.round(scaleX * selection.x1) + 'px', 
    marginTop: '-' + Math.round(scaleY * selection.y1) + 'px' 
    }); 


    //这里通过jQuery语法在原来图片后插入预览的小图片 
    $(document).ready(function () { 
    $('<div id="ferret"><img src="upload_pic/resized_pic.jpg" style="position: relative;" /><div>').css({ 
    float: 'left', 
    position: 'relative', 
    overflow: 'hidden', 
    '100px', 
    height: '100px' 
    }) 

    .insertAfter($('#selectbanner')); 

    $('#selectbanner').imgAreaSelect({ 
    selectionColor: 'blue', x1:0, y1:0, x2: 100,//初始位置 
    maxWidth:500,y2:100, 
    aspectRatio: '1:1',//缩放比例 
    selectionOpacity: 0.2 , 
    onSelectEnd: preview //裁剪后执行的函数,在上面 
    }); 
    //确认裁剪 
    $("#sliceButton").click(function() { 
    var pic = $('#selectbanner').attr('src'); 
    // alert(pic); 
    var x,y,w,h; 
    $.post( 
    "cat.php", //(2)将附上这个页面的代码 

    x:$('#selectbanner').data('x'), 
    y:$('#selectbanner').data('y'), 
    w:$('#selectbanner').data('w'), 
    h:$('#selectbanner').data('h'), 
    pic:pic 
    }, 
    function(data){ 
    // alert(data); 
    //把裁剪后图片加载到#sure 
    if(data){ 
    $('#sure').attr('src',data); 


    ); 
    }); 
    }) 
    </script> 
    <title>图片裁剪、预览</title> 
    </head> 
    <body> 
    <?php 
    //上传图片后,把图片复制到upload文件夹下面 
    if($_POST){ 
    $photo = $_FILES['img']['name']; 
    $tmp_addr = $_FILES['img']['tmp_name']; 

    $path = 'upload/'; 
    $type=array("jpg","gif","jpeg","png"); 
    $tool = substr(strrchr($photo,'.'),1); 
    if(!in_array(strtolower($tool),$type)){ 
    $text=implode('.',$type); 
    echo "您只能上传以下类型文件: ",$text,"<br>"; 
    }else{ 
    $filename = explode(".",$photo); //把上传的文件名以"."好为准做一个数组。 
    $time = date("m-d-H-i-s"); //取当前上传的时间 
    $filename[0] = $time; //取文件名 
    $name = implode(".",$filename); //上传后的文件名 
    $uploadfile = $path.$name; 
    $_SESSION['upfile'] = $uploadfile;//上传后的文件名地址 
    move_uploaded_file($tmp_addr,$uploadfile); 

    // echo $uploadfile; 

    ?> 
    <div id="s"> 
    <!--上传图片--> 
    <form action="" method="post" enctype="multipart/form-data"> 
    <input type="file" id="img" name="img" value="" onclick=""/> 
    <input name="submit" id="submit" type="submit" value="提交" class="submit"/> 
    </form> 
    <!--显示图片--> 
    <? if(isset($_SESSION['upfile'])){?> 
    <img id="selectbanner" name="selectbanner" src="<? echo $_SESSION['upfile'];?>" title="mypic"/> 
    <? }?> 
    </div> 
    <!--确认裁剪--> 
    <div><input type="submit" id="sliceButton" name="sliceButton" value="sliceButton"></div> 
    <!--显示裁剪后的图片--> 
    < div><img id="sure" src="" style="cursor:hand" /></div> 
    </body> 
    </html> 

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  • 原文地址:https://www.cnblogs.com/yyp520thy/p/7611312.html
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