怎么判断只有空格和回车在里面？</h1></div> <div class="user-card" data-v-0c168368><div class="user-title flex align-center" data-v-21e3c89c data-v-0c168368><a href="https://blog.csdn.net/ccode" target="_blank" class="flex align-center" data-v-21e3c89c><img src="https://profile-avatar.csdnimg.cn/default.jpg!1" alt class="head" data-v-21e3c89c> <span class="name" data-v-21e3c89c>Ccode</span></a> <span class="cop flex1" data-v-21e3c89c><!----> <!----> <!----> <span class="cop-p time" data-v-21e3c89c>2003-08-26 09:56:01</span> <!----></span> <div class="foot-btn-more" data-v-21e3c89c><!----> <!----></div></div></div> <!----> <!----> <!----> <div id="blogDetail2" class="markdown_views htmledit_views" data-v-0c168368>仅仅只有空格和回车</div></div></div></div> <div class="test" data-v-0c168368> ...全文 </div> <!----></div> <!----> <!----> <!----> <!----> <!----> <div class="vote-outer" style="margin-bottom: 16px;" data-v-56585d28><div class="vote-content" data-v-6331320d data-v-56585d28></div></div> <div 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class="detail-commentbar-box" data-v-56585d28><div class="commentToolbar" data-v-d10a0ac8 data-v-56585d28><div class="user-operate clearTpaErr" data-v-d10a0ac8><span class="sacn" data-v-d10a0ac8><i class="tool-icon icon-sacn" data-v-d10a0ac8></i><span class="num" data-v-d10a0ac8>592</span></span> <span data-report-click="{"spm":"3001.5988"}" class="reply" data-v-d10a0ac8><i class="tool-icon icon-reply" data-v-d10a0ac8></i><span data-v-d10a0ac8>4</span></span> <!----> <span class="pay-money" data-v-d10a0ac8><i class="tool-icon icon-pay" data-v-d10a0ac8></i><span data-v-d10a0ac8>打赏</span></span> <span data-report-click="{"spm":"3001.5987"}" class="collect" data-v-d10a0ac8><i class="tool-icon icon-collect" data-v-d10a0ac8></i>收藏<!----></span> <div class="handle-item share" data-v-ca030a68 data-v-d10a0ac8><span height="384" data-v-ca030a68><div role="tooltip" id="el-popover-8180" aria-hidden="true" class="el-popover el-popper popo share-popover" style="width:265px;display:none;"><!----><div id="tool-QRcode" class="QRcode" data-v-ca030a68><img src="https://csdnimg.cn/release/cmsfe/public/img/shareBg2.05330abf.png" alt="" class="share-bg" data-v-ca030a68> <div class="share-bg-box" data-v-ca030a68><div class="share-content" data-v-ca030a68><img src="https://profile-avatar.csdnimg.cn/default.jpg!1" alt="" class="share-avatar" data-v-ca030a68> <div class="share-tit" data-v-ca030a68>怎么判断只有空格和回车在<textarea>里面？</div> <div class="share-dec" data-v-ca030a68>仅仅只有空格和回车</div> <span class="copy-share-url" data-v-ca030a68>复制链接</span> <div class="shareText" data-v-ca030a68> </div></div> <div class="share-code" data-v-ca030a68><div class="qrcode" data-v-ca030a68></div> <div class="share-code-text" data-v-ca030a68>扫一扫</div></div></div></div> </div><span class="el-popover__reference-wrapper"><div class="tool-btn share" data-v-d10a0ac8><i class="cty-share" data-v-d10a0ac8></i> <span data-v-d10a0ac8>分享</span></div></span></span></div> <span class="blink-btn" data-v-d10a0ac8><i class="icon-blink" data-v-d10a0ac8></i> <span data-v-d10a0ac8>转发到动态</span></span> <!----> <!----> <span class="report" data-v-d10a0ac8><i class="tool-icon icon-report" data-v-d10a0ac8></i><span data-v-d10a0ac8>举报</span></span> <div class="edit-item" data-v-829a41e2 data-v-d10a0ac8><!----></div> <!----> <div class="reply-box" data-v-d10a0ac8><span data-report-click="{"spm":"3001.5990"}" class="reply reply-act" data-v-d10a0ac8><i class="icon-edit" data-v-d10a0ac8></i> 写回复</span></div></div> <!----> <!----> <!----> <!----> <div class="el-dialog__wrapper" style="display:none;" data-v-d10a0ac8><div role="dialog" aria-modal="true" aria-label="配置赞助广告" class="el-dialog topicad-dialog" style="margin-top:15vh;width:500px;"><div class="el-dialog__header"><span class="el-dialog__title">配置赞助广告</span><button type="button" aria-label="Close" class="el-dialog__headerbtn"><i class="el-dialog__close el-icon el-icon-close"></i></button></div><!----><div class="el-dialog__footer"><span class="dialog-footer"><button type="button" class="el-button el-button--default el-button--middle"><!----><!----><span>取 消</span></button> <button type="button" class="el-button el-button--primary submit"><!----><!----><span> 确 定 </span></button></span></div></div></div></div></div> <!----> <a href="https://mp.csdn.net/edit?guide=1" target="_blank" data-report-click="{"spm":"3001.9713"}" data-report-query="spm=3001.9713" class="ai-assistant-entrance" data-v-56585d28><span data-v-56585d28>用AI写文章</span> <span class="r-arrow" data-v-56585d28></span></a></div> <!----> <div class="Comment" data-v-aeae4ab6 data-v-4a5a7f56><!----> <header class="reply-header" data-v-aeae4ab6><div class="reply-info" data-v-aeae4ab6><span data-v-aeae4ab6>4 条</span>回复</div> <div class="rit-btn" data-v-aeae4ab6><i class="icon icon-switch" data-v-aeae4ab6></i> <span data-v-aeae4ab6>切换为时间正序</span></div></header> <div class="comment-plugin" data-v-1ba719dd data-v-aeae4ab6><div class="init-box" data-v-1ba719dd><div class="input-box" data-v-1ba719dd>请发表友善的回复…</div> <div class="btn-reply" data-v-1ba719dd>发表回复</div></div> <div data-v-1ba719dd><div class="rich-editor detailReplay" style="display:none;" data-v-06960096 data-v-1ba719dd><!----> <!----> <!----> <div id="mdEditor" class="area" data-v-06960096></div></div></div> <div class="el-dialog__wrapper" style="display:none;" data-v-1ba719dd><div role="dialog" aria-modal="true" aria-label="dialog" class="el-dialog redEnvolope-form-reward-dialog" style="margin-top:15vh;width:400px;"><div class="el-dialog__header"><div class="el-dialog__custom-header"><span class="main_title">打赏红包</span> <img 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data-v-395b6e48><span class="name" data-v-395b6e48><a target="_blank" href="https://blog.csdn.net/Ccode" class="name" data-v-395b6e48>Ccode</a> <!----> <!----> <span class="time" data-v-395b6e48>2003-08-26</span></span> <!----></div> <div class="user-operate clearTpaErr" data-v-395b6e48><span class="operate" data-v-395b6e48><i class="icon icon-operate" data-v-395b6e48></i> <div class="option-box" data-v-395b6e48><ul class="ul-box" data-v-395b6e48><li data-v-395b6e48>打赏</li><!----><!----><!----><li data-v-395b6e48>举报</li></ul></div></span> <span data-report-click="{"spm":"3001.5991"}" class="reply" data-v-395b6e48><i class="icon icon-reply" data-v-395b6e48></i> <span data-v-395b6e48>回复</span></span> <!----> <!----> <span data-report-click="{"spm":"3001.5992"}" class="love" data-v-395b6e48><!----> <i class="icon" data-v-395b6e48></i></span></div></div> <div class="comment-msg" data-v-395b6e48><div class="msg" data-v-395b6e48><!----> <span id="text-24061579" class="text rich-text blog-content-box htmledit_views markdown_views" data-v-395b6e48>顶</span></div></div> <!----></div></div> <div class="comment-child flat-child" data-v-395b6e48><!----></div></div><div id="24056828" class="comment-item" data-v-395b6e48><div class="comment-box" data-v-395b6e48><div class="head-img" data-v-395b6e48><a target="_blank" href="https://blog.csdn.net/cloudchen" data-v-395b6e48><img src="https://profile-avatar.csdnimg.cn/default.jpg!1" alt data-v-395b6e48></a></div> <div class="comment-main" data-v-395b6e48><div class="user-msg" data-v-395b6e48><div class="info-card" data-v-395b6e48><span class="name" data-v-395b6e48><a target="_blank" href="https://blog.csdn.net/cloudchen" class="name" data-v-395b6e48>cloudchen</a> <!----> <!----> <span class="time" data-v-395b6e48>2003-08-26</span></span> <!----></div> <div class="user-operate clearTpaErr" data-v-395b6e48><span class="operate" data-v-395b6e48><i class="icon icon-operate" data-v-395b6e48></i> <div class="option-box" data-v-395b6e48><ul class="ul-box" data-v-395b6e48><li data-v-395b6e48>打赏</li><!----><!----><!----><li data-v-395b6e48>举报</li></ul></div></span> <span data-report-click="{"spm":"3001.5991"}" class="reply" data-v-395b6e48><i class="icon icon-reply" data-v-395b6e48></i> <span data-v-395b6e48>回复</span></span> <!----> <!----> <span data-report-click="{"spm":"3001.5992"}" class="love" data-v-395b6e48><!----> <i class="icon" data-v-395b6e48></i></span></div></div> <div class="comment-msg" data-v-395b6e48><div class="msg" data-v-395b6e48><!----> <span id="text-24056828" class="text rich-text blog-content-box htmledit_views markdown_views" data-v-395b6e48><TEXTAREA NAME="t" ROWS="20" COLS="20"></TEXTAREA><br /> <button onclick="alert(t.value.match(/ /g).length)">匹配空格</button><br /> <button onclick="alert(t.value.match(/\n/g).length)">匹配换行</button></span></div></div> <!----></div></div> <div class="comment-child flat-child" data-v-395b6e48><!----></div></div><div id="24056770" class="comment-item" data-v-395b6e48><div class="comment-box" data-v-395b6e48><div class="head-img" data-v-395b6e48><a target="_blank" href="https://blog.csdn.net/lyjlee" data-v-395b6e48><img src="https://profile-avatar.csdnimg.cn/default.jpg!1" alt data-v-395b6e48></a></div> <div class="comment-main" data-v-395b6e48><div class="user-msg" data-v-395b6e48><div class="info-card" data-v-395b6e48><span class="name" data-v-395b6e48><a target="_blank" href="https://blog.csdn.net/lyjlee" class="name" data-v-395b6e48>lyjlee</a> <!----> <!----> <span class="time" data-v-395b6e48>2003-08-26</span></span> <!----></div> <div class="user-operate clearTpaErr" data-v-395b6e48><span class="operate" data-v-395b6e48><i class="icon icon-operate" data-v-395b6e48></i> <div class="option-box" data-v-395b6e48><ul class="ul-box" data-v-395b6e48><li data-v-395b6e48>打赏</li><!----><!----><!----><li data-v-395b6e48>举报</li></ul></div></span> <span data-report-click="{"spm":"3001.5991"}" class="reply" data-v-395b6e48><i class="icon icon-reply" data-v-395b6e48></i> <span data-v-395b6e48>回复</span></span> <!----> <!----> <span data-report-click="{"spm":"3001.5992"}" class="love" data-v-395b6e48><!----> <i class="icon" data-v-395b6e48></i></span></div></div> <div class="comment-msg" data-v-395b6e48><div class="msg" data-v-395b6e48><!----> <span id="text-24056770" class="text rich-text blog-content-box htmledit_views markdown_views" data-v-395b6e48><%<br /> dim flag<br /> flag=0<br /> s=request("txtarea")<br /> for i=0 to len(s)<br /> if mid(s,i,1)<>char(32) and mid(s,i,1)<>char(10) then<br /> flag=1<br /> end if<br /> next <br /> if flag=0 then<br /> response.write "仅仅只有空格和回车"<br /> end if<br /> %></span></div></div> <!----></div></div> <div class="comment-child flat-child" data-v-395b6e48><!----></div></div><div id="24056684" class="comment-item" data-v-395b6e48><div class="comment-box" data-v-395b6e48><div class="head-img" data-v-395b6e48><a target="_blank" href="https://blog.csdn.net/sephiroth0079" data-v-395b6e48><img src="https://profile-avatar.csdnimg.cn/default.jpg!1" alt data-v-395b6e48></a></div> <div class="comment-main" data-v-395b6e48><div class="user-msg" data-v-395b6e48><div class="info-card" data-v-395b6e48><span class="name" data-v-395b6e48><a target="_blank" href="https://blog.csdn.net/sephiroth0079" class="name" data-v-395b6e48>sephiroth0079</a> <!----> <!----> <span class="time" data-v-395b6e48>2003-08-26</span></span> <!----></div> <div class="user-operate clearTpaErr" data-v-395b6e48><span class="operate" data-v-395b6e48><i class="icon icon-operate" data-v-395b6e48></i> <div class="option-box" data-v-395b6e48><ul class="ul-box" data-v-395b6e48><li data-v-395b6e48>打赏</li><!----><!----><!----><li data-v-395b6e48>举报</li></ul></div></span> <span data-report-click="{"spm":"3001.5991"}" class="reply" data-v-395b6e48><i class="icon icon-reply" data-v-395b6e48></i> <span data-v-395b6e48>回复</span></span> <!----> <!----> <span data-report-click="{"spm":"3001.5992"}" class="love" data-v-395b6e48><!----> <i class="icon" data-v-395b6e48></i></span></div></div> <div class="comment-msg" data-v-395b6e48><div class="msg" data-v-395b6e48><!----> <span id="text-24056684" class="text rich-text blog-content-box htmledit_views markdown_views" data-v-395b6e48>asp中用trim函数就可以了，<br /> 如果在javascript中，调用下面的函数吧。<br /> <br /> <script language=javascript><br /> function javatrim(Key){ //java的trim<br /> var len = Key.length; <br /> var i = 0;<br /> var j = len-1;<br /> var trimKey<br /> trimKey="";<br /> if(j >= 0){<!-- --><br /> while (1){<!-- --><br /> if(Key.charAt(i)==" ") i++;<br /> else break;<br /> } <br /> if(Key.length != i){<!-- --><br /> while(1){<!-- --><br /> if(Key.charAt(j)==" ") j--;<br /> else break;<br /> }<br /> trimKey = Key.substring(i,j+1); <br /> }<br /> }<br /> return trimKey;<br /> }<br /> </script><br /> <br /> </span></div></div> <!----></div></div> <div class="comment-child flat-child" data-v-395b6e48><!----></div></div> <!----></div> <!----></div> <!----></div> <!----></div> <xg-player examineInfo="[object Object]" optionsConfig="[object Object]" data-v-4a5a7f56></xg-player> <div class="recommendList" data-v-ca2d15ac data-v-4a5a7f56><div data-report-view="{"mod":"popu_645","index":"1","dest":"https://download.csdn.net/download/weixin_38663036/14045425","strategy":"2~default~OPENSEARCH~Paid","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Paid-1-14045425-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" class="list-item" data-v-ca2d15ac><div class="recommend-title" data-v-ca2d15ac><img 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href="https://download.csdn.net/download/weixin_38663036/14045425" data-report-click="{"mod":"popu_645","index":"1","dest":"https://download.csdn.net/download/weixin_38663036/14045425","strategy":"2~default~OPENSEARCH~Paid","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Paid-1-14045425-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" data-report-query="spm=1035.2023.3001.6557&utm_medium=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Paid-1-14045425-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default&depth_1-utm_source=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Paid-1-14045425-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default" class="title" data-v-ca2d15ac><em>textarea</em>去除多余<em>空格</em>和<em>回车</em>的方法及其属性</a></div> <a target="_blank" href="https://download.csdn.net/download/weixin_38663036/14045425" data-report-click="{"mod":"popu_645","index":"1","dest":"https://download.csdn.net/download/weixin_38663036/14045425","strategy":"2~default~OPENSEARCH~Paid","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Paid-1-14045425-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" data-report-query="spm=1035.2023.3001.6557&utm_medium=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Paid-1-14045425-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default&depth_1-utm_source=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Paid-1-14045425-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default" class="desc" data-v-ca2d15ac><em>textarea</em>去除多余<em>空格</em>和<em>回车</em>的方法及其属性 1.错误解决方法 使用<em>textarea</em>的标签时候发现多了<em>空格</em>或者’\n‘，后来发现是标签的位置错了 以下是错误示范： 你好 以下是正确示范： 你好 关键在于与要在同一行，不然他们之间的部分都计入（包括<em>回车</em>’\n‘,<em>空格</em>） 2.的属性 以下是常用的属性 属性 功能 maxlength 最大输入长度 minlength 最小输入长度 cols 列数 row 行数 readonly 只读不可修改 required 必填 warp 是否需要换行符 特别介绍一下 warp功能 soft 在表单</a></div><div data-report-view="{"mod":"popu_645","index":"2","dest":"https://download.csdn.net/download/fushaoping2008/1982253","strategy":"2~default~OPENSEARCH~Rate","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-2-1982253-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" class="list-item" data-v-ca2d15ac><div class="recommend-title" data-v-ca2d15ac><img 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href="https://download.csdn.net/download/fushaoping2008/1982253" data-report-click="{"mod":"popu_645","index":"2","dest":"https://download.csdn.net/download/fushaoping2008/1982253","strategy":"2~default~OPENSEARCH~Rate","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-2-1982253-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" data-report-query="spm=1035.2023.3001.6557&utm_medium=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-2-1982253-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default&depth_1-utm_source=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-2-1982253-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default" class="title" data-v-ca2d15ac><em>textarea</em>换行符</a></div> <a target="_blank" href="https://download.csdn.net/download/fushaoping2008/1982253" data-report-click="{"mod":"popu_645","index":"2","dest":"https://download.csdn.net/download/fushaoping2008/1982253","strategy":"2~default~OPENSEARCH~Rate","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-2-1982253-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" data-report-query="spm=1035.2023.3001.6557&utm_medium=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-2-1982253-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default&depth_1-utm_source=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-2-1982253-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default" class="desc" data-v-ca2d15ac><em>textarea</em>换行符 在<em>textarea</em>中输入<em>回车</em>符 在js读取<em>textarea</em>中的值有\r\n然后到业务层转换到string中就有可能变成<em>空格</em>形式然后被存入数据库，当在取出此值的时候则会变成<em>空格</em>的形式,因此我们需要将不显示的\r\n替换一下。</a></div><div data-report-view="{"mod":"popu_645","index":"3","dest":"https://download.csdn.net/download/weixin_38550146/13717284","strategy":"2~default~OPENSEARCH~Rate","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-3-13717284-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" class="list-item" data-v-ca2d15ac><div class="recommend-title" data-v-ca2d15ac><img 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href="https://download.csdn.net/download/weixin_38550146/13717284" data-report-click="{"mod":"popu_645","index":"3","dest":"https://download.csdn.net/download/weixin_38550146/13717284","strategy":"2~default~OPENSEARCH~Rate","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-3-13717284-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" data-report-query="spm=1035.2023.3001.6557&utm_medium=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-3-13717284-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default&depth_1-utm_source=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-3-13717284-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default" class="title" data-v-ca2d15ac>PHP实现将<em>textarea</em>的值根据<em>回车</em>换行拆分至数组</a></div> <a target="_blank" href="https://download.csdn.net/download/weixin_38550146/13717284" data-report-click="{"mod":"popu_645","index":"3","dest":"https://download.csdn.net/download/weixin_38550146/13717284","strategy":"2~default~OPENSEARCH~Rate","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-3-13717284-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" data-report-query="spm=1035.2023.3001.6557&utm_medium=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-3-13717284-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default&depth_1-utm_source=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-3-13717284-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default" class="desc" data-v-ca2d15ac>本文实例讲述了PHP实现将<em>textarea</em>的值根据<em>回车</em>换行拆分至数组的方法。分享给大家供大家参考。具体分析如下： <em>textarea</em><em>回车</em>换行为 \r\n $keyword_list = trim($_REQUEST['keywords']); $keyword_arr = explode("\r\n", $keyword_list); 这个地方需要注意是要去除<em>textarea</em> 前后的<em>空格</em>，否则会多出一个 或者使用explode也是可以的 只是不能用\r\n只能用双引号，不能用单引号 希望本文所述对大家的php程序设计有所帮助。 您可能感兴趣的文章</a></div><div data-report-view="{"mod":"popu_645","index":"4","dest":"https://download.csdn.net/download/weixin_38604653/13984824","strategy":"2~default~OPENSEARCH~Rate","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-4-13984824-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" class="list-item" data-v-ca2d15ac><div class="recommend-title" data-v-ca2d15ac><img 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href="https://download.csdn.net/download/weixin_38604653/13984824" data-report-click="{"mod":"popu_645","index":"4","dest":"https://download.csdn.net/download/weixin_38604653/13984824","strategy":"2~default~OPENSEARCH~Rate","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-4-13984824-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" data-report-query="spm=1035.2023.3001.6557&utm_medium=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-4-13984824-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default&depth_1-utm_source=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-4-13984824-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default" class="title" data-v-ca2d15ac>php使用str_replace实现输入框<em>回车</em>替换br的方法</a></div> <a target="_blank" href="https://download.csdn.net/download/weixin_38604653/13984824" data-report-click="{"mod":"popu_645","index":"4","dest":"https://download.csdn.net/download/weixin_38604653/13984824","strategy":"2~default~OPENSEARCH~Rate","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-4-13984824-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" data-report-query="spm=1035.2023.3001.6557&utm_medium=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-4-13984824-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default&depth_1-utm_source=distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-4-13984824-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default" class="desc" data-v-ca2d15ac>本文实例讲述了php使用str_replace实现输入框<em>回车</em>替换br的方法，分享给大家供大家参考。具体实现方法如下： 在我们用<em>textarea</em>时会发现<em>回车</em>与<em>空格</em>是不可看到的,所以我们利用str_replace函数将php中的\\n替换成br就可以了,有需要的朋友可以参考一下,代码如下: 复制代码 代码如下:function htmtocode($content) {     $content = str_replace(“n”, “<br>”, str_replace(” “, ” “, $content));     return $content; } 先替换掉<em>空格</em>,再替换<em>回车</em>,相当</a></div><div data-report-view="{"mod":"popu_645","index":"5","dest":"https://download.csdn.net/download/zxy397472251/3457362","strategy":"2~default~OPENSEARCH~Rate","extra":"{\"utm_medium\":\"distribute.pc_relevant_bbs_down_v2.none-task-download-2~default~OPENSEARCH~Rate-5-3457362-bbs-40073557.264^v3^pc_relevant_bbs_down_v2_default\",\"dist_request_id\":\"1713565334701_63037\"}","spm":"1035.2023.3001.6557"}" class="list-item" data-v-ca2d15ac><div class="recommend-title" data-v-ca2d15ac><img 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