Why PHP in script don't work

Question

I am a beginner in PHP, I just need a little bit php in my project.

I want to echo something in a script and it doesn't work. Why?

<div id="entree">
        <label>Mot de passe : </label><br><br>
        <input type="text" placeholder="Inserer Mot de passe" id="motdepasse" onKeyPress="if(event.keyCode == 13) mdp();"/>
            <br><br>
            <input type="button" onclick="mdp()" value="C'est parti!">
</div>

and my script :

function mdp()
{
   alert("ok");
   <?php echo "coucou";?>
}

What does "_it don't work_" mean? White page? Errors in console? `` should be ``. — brombeer, Apr 27 '18 at 06:35
https://stackoverflow.com/questions/19323010/execute-php-function-with-onclick — szarlih, Apr 27 '18 at 06:38
sorry for syntax but i have the right syntax in my real folder, i just forgot it here :) — Paul Tanné, Apr 27 '18 at 06:38
i want to put a text in the input, if the text is one of the id in my database, it will redirect him to another page ( like a save) — Paul Tanné, Apr 27 '18 at 06:51

score 0 · Accepted Answer · answered Apr 27 '18 at 06:36

0

it should be like this way :

function mdp()
{
  var str = "<?php echo 'coucou';?>";
  alert(str);
}

answered Apr 27 '18 at 06:36

Pradeep

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Thank you it work with the echo, i gonna see if my real idea work with this :) – Paul Tanné Apr 27 '18 at 06:40
@PaulTanné If this answer solved your question you are welcome to accept it – brombeer Apr 27 '18 at 06:42

score 0 · Answer 2 · answered Apr 27 '18 at 06:41

There are few corrections here:

<?php echo "coucou";?> /* missed at the end `;?` */

For JS multiple statements without using ; will result in syntax error, try this

alert(<?=var_export("coucou",true)?>);

Why PHP in script don't work

2 Answers2