How to get the return from php to javascript? -

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संभव डुप्लिकेट:

मुझे एक्सएमएल में उपयोगकर्ता के सत्यापन के लिए एक PHP कोड रहा है

उदाहरण के लिए: ValLogin.php 

  & lt;? Php $ userName = $ _REQUEST ["उपयोगकर्ता नाम"] ; $ पासवर्ड = $ _REQUEST ["पासवर्ड"]; $ ICount = 0; $ LoginArray = array (); $ Xml = सरल एक्सएमएललोड_फ़ाइल ("लॉगिंटस्ट। एक्सएमएल"); ($ I = 0; $ i & lt; 2; $ i ++) {foreach ($ xml- & gt; उपयोगकर्ता नाम [$ i] - & gt; विशेषताएं ($ a = & gt; $ b) के रूप में {$ loginArray [$ iCount] = $ B; $ ICount ++; } यदि ($ उपयोगकर्ता नाम == $ लॉगिनअरेरा [0] & amp; $ password == $ लॉगिनअरे [1]) {हेडर ("स्थान: EHP_Configuration.html"); वापसी ; } $ ICount = 0; } गूंज "& lt; SCRIPT LANGUAGE = 'javascript' & gt; अलर्ट ('एडी') & lt; / SCRIPT & gt;"; हैडर ("स्थान: लॉगिनओ"); ? & Gt;

HTML 

  & lt; form method = "post" action = "vallogin.php" & gt; & Lt; / प्रपत्र & gt;

ईको अपेक्षा के अनुरूप काम नहीं करता है यह सीधे लॉग इन करने के लिए रीडायरेक्ट दिखाता है

मुझे संदेश अवैध उपयोगकर्ता नाम / लॉगिन कैसे प्राप्त हो सकता है?

आप हेडर भेजने से पहले एचटीएमएल / डाटा नहीं भेज सकते हैं, इसलिए आपको "लॉगिनओवा" के अंदर जावास्क्रिप्ट-अलर्ट भेजना होगा।

इसके अलावा आपको वास्तव में अपने जावास्क्रिप्ट कोड को गले लगा देना चाहिए 

  & lt; स्क्रिप्ट प्रकार = "टेक्स्ट / जावास्क्रिप्ट" & gt; चेतावनी ( 'asd'); & Lt; / स्क्रिप्ट & gt;

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