PHP代码中的访问会话变量值 [英] php access session variable value in html code
问题描述
我想实现的是在html form上打印php会话变量。是我试图打印 valid_firm Session 变量，但它用于打印变量的方式不起作用...
newFirm-form.php
<！DOCTYPE>
< html>
< head>
< meta charset =utf-8>
< meta content =no-cachehttp-equiv =cache-control>< / meta>
< / head>
< body>
< form id =firm-formmethod =post/>
< p>公司名称< / p>< input class =firm-nametype =textname =firm-name/>
< p>电子邮件< / p>< input type =textname =firm-email/>
< p>电话< / p>< input type =textname =telephone/>
< p>地址< / p>< input type =textname =address/>
< p>城市< / p>< input type =textname =city/>
< p>公司代码< / p>< input type =textname =firm-code/> <峰; br />
< / form>
<？php print $ _SESSION [valid_firm]; ？>
< input class =submittype =submitvalue =Submit>< br />
< span class =errorstyle =display：none>请填写空字段< / span>
< span class =successstyle =display：none>表单提交成功< / span>
< / body>
< footer>
< script type =text / javascriptsrc =../ js / libs / jquery-1.11.3-min.js> < /脚本>
< script type =text / javascriptsrc =../ js / newFirm.js>< / script>
< / footer>
< / html>
使用ajax post方法调用提交表单的JavaScript文件
$ b （）。$ b pre $ $ c $ $ $（document）.ready（function（）{
var empty_fields = 0;
$（。submit）。 （）函数（）{
$（＃firm-form *）。filter（：input）。 ）{
empty_fields + = 1;
}
}）;
if（empty_fields> 0）{
$（。error）。fadeIn（800 ）.show（）;
$（。success）。fadeOut（800）.hide（）;
}
else {
var firm_name = $（。firm -name）。val（）;
$ .ajax（{
type：POST，
url：../ registration-control / register-firm.php，
data：firm_name =+ firm_name，
success：function（）{
$（。success）。fadeIn（800）.show（）;
$（ ）。fadeOut（800）.hide（）;
}
}）;
}
empty_fields = 0;
}）;
}）;
以及用于保存会话变量的php文件
<？php
if（isset（$ _ POST [firm_name]））{
validateName（$ _ POST [firm_name]）;
$ _SESSION [firm] = $ _POST [firm_name];
// echo $ _SESSION [firm]。from register-firm;
}
函数validateName（$ firm_name）{
var_dump（$ firm_name）;
if（preg_match（/ ^ [A-ZA-Ω] {1} [a-zA-Zα-ωA-Ω0-9\。] * /，$ firm_name）&&！ctype_digit （$ firm_name））{
$ _SESSION [valid_firm] = 1;
}
$ _SESSION [valid_firm] = 0;
}
？>
$ c> session_start（）这个函数应该首先在你想访问会话的每个页面中调用
EDITED
我可以说感谢你的-1。
当我说你的 session_start（）我这样做是因为能够访问php脚本中的会话，您必须在调用之前调用 session_start（） $ _ SESSION 。在<！DOCTYPE html> 之前的消息响应之前，应调用 session_start（） / p>
what i would like to achieve is to print php session variable on html form.Above is the form where i am trying to print the valid_firm Session variable but the way it is used to print the variable is not working...
newFirm-form.php
<!DOCTYPE>
<html>
<head>
<meta charset="utf-8">
<meta content="no-cache" http-equiv="cache-control"></meta>
</head>
<body>
<form id="firm-form" method="post" />
<p>Firm Name</p><input class="firm-name" type="text" name="firm-name" />
<p>Email</p><input type="text" name="firm-email" />
<p>Telephone</p><input type="text" name="telephone" />
<p>Address</p><input type="text" name="address" />
<p>City</p><input type="text" name="city" />
<p>Firm Code</p><input type="text" name="firm-code" /> <br/>
</form>
<?php print $_SESSION["valid_firm"]; ?>
<input class="submit" type="submit" value="Submit"><br />
<span class="error" style="display:none"> Please Fill The Empty Fields</span>
<span class="success" style="display:none"> Form Submitted Success</span>
</body>
<footer>
<script type="text/javascript" src="../js/libs/jquery-1.11.3-min.js"> </script>
<script type="text/javascript" src="../js/newFirm.js"></script>
</footer>
</html>
javascript file with ajax post method call to submit the form
$(document).ready(function() {
var empty_fields = 0;
$(".submit").on("click", function(){
$("#firm-form *").filter(":input").each(function(){
if(!$(this).val()){
empty_fields += 1;
}
});
if(empty_fields > 0){
$(".error").fadeIn(800).show();
$(".success").fadeOut(800).hide();
}
else {
var firm_name = $(".firm-name").val();
$.ajax({
type:"POST",
url:"../registration-control/register-firm.php",
data: "firm_name=" + firm_name,
success: function(){
$(".success").fadeIn(800).show();
$(".error").fadeOut(800).hide();
}
});
}
empty_fields = 0;
});
});
and the php file to save the session variable
<?php
if (isset($_POST["firm_name"])){
validateName($_POST["firm_name"]);
$_SESSION["firm"] = $_POST["firm_name"];
//echo $_SESSION["firm"]." from register-firm";
}
function validateName($firm_name){
var_dump($firm_name);
if (preg_match("/^[A-ZΑ-Ω]{1}[a-zA-Zα-ωΑ-Ω0-9\.]*/", $firm_name) && !ctype_digit($firm_name)){
$_SESSION["valid_firm"] = 1;
}
$_SESSION["valid_firm"] = 0;
}
?>
I don't see where is your session_start() this function should be first called in every page where you want to access session
EDITED
What can I say thank you for your -1.
When I said where is your session_start() I did it because to be able to access session in a php script you must call session_start() before to call $_SESSION. More of that the session_start() should be called before any response that mesans before <!DOCTYPE html>.
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