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How to send Javascript in PHP?

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marijonas

marijonas

Technical User
Apr 20, 2004
29
SE
Hi!
I would like to have a small javascript in page generated by php.
<code>
<TR class=searchresultodd
onmouseover="javascript: if(this.className=='searchresultodd'){on=1;};this.style.backgroundColor='#FFDA81';"
onclick="op('cid=2040211');"
onmouseout="javascript: if(on==1){this.style.backgroundColor='#EDF4FA';on=0;} else {this.style.backgroundColor='#ffffff'}">
</code>

I don't know how to send it with print ' as this script contains both " and ' which messes the print command.

Does any know how to write that? Thanks!
 
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Enclose your string in one quote type or another (I prefer ") and escape those symbols within the string.

echo "displaying \"quoted\" text";
 
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Thanks, I will test that... you mean like:
echo "<TR class=searchresultodd
onmouseover=\"javascript: if(this.className=='searchresultodd'...
 
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the other option is if you don't need to send any php content to the javascript is to just close and then reopen your php tags:
Code: 
?> <!--close php tag
<code>
<TR class=searchresultodd
              onmouseover="javascript: if(this.className=='searchresultodd'){on=1;};this.style.backgroundColor='#FFDA81';"
              onclick="op('cid=2040211');"
              onmouseout="javascript: if(on==1){this.style.backgroundColor='#EDF4FA';on=0;} else {this.style.backgroundColor='#ffffff'}">
</code>
<?php //open you php tag and continue on
 
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I'm guessing you want to condition it.

Say if something is true in PHP then it prints out the javascript right?

well you could escapoe the php delimiters altogether.

Code: 
if($myvar==[blue]true[/blue])
[red]?>[/red][green]close PHP delimiters [/green]
[purple]<TR class=searchresultodd
              onmouseover="javascript: if(this.className=='searchresultodd'){on=1;};this.style.backgroundColor='#FFDA81';"
              onclick="op('cid=2040211');"
              onmouseout="javascript: if(on==1){this.style.backgroundColor='#EDF4FA';on=0;} else {this.style.backgroundColor='#ffffff'}">[/purple]

[red]<?PHP[/red][green]reopen PHP tags[/green]

} [green]close if statement curly brace[/green]


Or you could use the alternative HEREDOC syntax.
Code: 
echo <<<END
javascript to print.
This uses the "here document" syntax to output
multiple lines with $variable interpolation. Note
that the here document terminator must appear on a
line with just a semicolon. no extra whitespace!
END;

----------------------------------
Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.
 
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Hi marijonas,

Have a look at this solution. Four files to complete the example use:

My script loader

[tt]load_script.php[/tt]
Code: 
<?php
$script_file_name = $_REQUEST["fn"];
$default_script = "default.my_js";

function output_script($file_name) {
  header("content-type: application/x-javascript");
  $script = file($file_name);
  foreach($script as $line_no => $line)
    echo $line;
}

if(!$script_file_name || !file_exists($script_file_name))
  output_script($default_script);
else
  output_script($script_file_name);
?>

A default javascript

[tt]default.my_js[/tt]
Code: 
function init() {
  alert('Default JS loaded');
}

A demo javascript

[tt]some_script.my_js[/tt]
Code: 
function init() {
  alert('Intended script loaded');
}

And finally the html to test it out

[tt]index.html[/tt]
Code: 
<html>
<head>
  <title>PHP serving JS</title>
  <script type="text/javascript" src="load_script.php?fn=some_script.my_js"></script>
</head>
<body onload="init()">
</body>
</html>

That should give you an idea howto play around on your own.

Regards


Jakob
 
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Thanks for the ideas! I have actually taken the simpliest way (lgarner) but I guite sure that I will need other examples in the more complex situations!

Thanks again!
 
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