Run JavaScript from PHP if statement

Question

so I saw a few similar questions like this but none worked for me so I thought I might as well ask. So I'm trying to make a popup load if the member's ID isn't in a database. I have all the PHP and SQL working for the database but I'm struggling to run the function for the JavaScript.
I tried

if (condition){ 
   my database code;
  }else{
     my database code;
     echo "function()"
  }

I also tried

if (condition){ 
   my database code;
  }else{
     my database code;
     echo "<script type="text/javascript">function();</script>"
  }

but that still didn't work? I really want this on my website so if someone knows another way that would be AWESOME :)
Thanks in advance.

You are not quoting your string correctly. Maybe this works for you: echo "<script>function();</script>";. If not you have to provide a more complete example. — Felix Kling
– Felix Kling, Commented Jun 23, 2018 at 5:14
It would be cleaner if you made a PHP variable like say $is_member and stored that in a JavaScript variable, so you didn't have to sprinkle JavaScript in your PHP — Robert
– Robert, Commented Jun 23, 2018 at 5:15

Sheshank S. · Accepted Answer · 2018-06-23 05:14:03Z

3

Try this:

if (condition){ 
   my database code;
} else {
   my database code;
   echo '<script type="text/javascript">function();</script>'
}

What was happening was that in "<script type="text/javascript">function();</script>" there were double quotes that weren't being escaped. Using singlequotes fixes this.

answered Jun 23, 2018 at 5:14

Sheshank S.

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3 Comments

Charlie Simon Over a year ago

Hey so I know you answered my question, but I have another quick small one, so I'm trash at Javascript and I'm trying to run my function when the if statement is executed but it isn't working?? When I put the function onto a button it works perfectly but not when I just have functionname() would you like me to send you my code or should I make another question? This would help me so much :) thanks <3

Sheshank S. Over a year ago

It might be better to make another question @CharlieSimon Also, remember to upvote the answer ;)

Sheshank S. Over a year ago

@CharlieSimon Send the link to the question here

PHP Web · Accepted Answer · 2018-06-23 05:26:03Z

0

Use this shortcut method:-

echo "<script>myFunction()</script>" ;

answered Jun 23, 2018 at 5:26

PHP Web

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