[RESOLVED] php array to javascript

bobvaz · Nov 17, 2006

Earlier I had posted my problem with getting a single variable to javascript. It was resolved using var jstest='<?php echo $test?>';.....I now need to get an array to an equivalent array in javascript and everything I try fails! I am a newbie to php but everything I try fails.
The code below has the array $data I would like to pass to js. The code may not be perfect but it is echoing the values. Please, I would like an example of how to do this. Thanks in advance. Bob

<?php
$filename = "linksfile.txt";
$page[0] = "index.html";
$page[1] = "about.htm";
$page[2] = "news.htm";
$page[3] = "meminfo.html";
$page[4] = "contact.html";
$page[5] = "golf.htm";
$page[6] = "tennis.htm";
$page[7] = "fanda.htm";
$page[8] = "dining.htm";
$page[9] = "social.htm";
$page[10] = "weddings.htm";
$page[11] = "banquets.htm";
$page[12] = "contact.htm";
$page[13] = "PDFgallery.htm";
$page[14] = "faq-home.htm";
$green = "grdot.png\n";
$yellow = "yedot.png\n";
$none = "nodot.png\n";
$lfh = fopen($filename, 'w') or die("can't open file");
flock($lfh, LOCK_EX);
$i = 0;
while ($i < count($page))
{
$pagename =trim($page[$i]);
$linkdate = date ("Y-m-d ", filemtime($pagename));
$diff = (strtotime(date("Y-m-d")) - strtotime($linkdate)) / (60 60 24);

echo "file ".$pagename." Datem: ".$linkdate. " Diff: ".$diff."<br>";
if ($diff < 3)
{
fwrite($lfh, $green);

}

else if ($diff < 8)
{

fwrite($lfh, $yellow);
}
else
{

fwrite($lfh, $none);
}
$i++;
}
flock($lfh, LOCK_UN);
fclose($lfh);
}

// read file into array
$data = file($filename) or die("Could not read file!");
// loop through array and print each line
foreach ($data as $line)
{
echo $line,"<br>";
}
// print file contents
echo "-- ALL DONE --<br>";
?> :mad:

suntra · Nov 17, 2006

First, please ALWAYS use [ PHP] and [ /PHP] (without the spaces) to insert code...

Second, you seem to pass the contents of a file DIRECTLY to JS, without setting any variables, or calling any functions... that of course can't work !

foreach ($data as $line)
{
echo $line,"<br>";
}

Replace it with this...

// Let's declare the script element according to X(HT)ML rules...
echo '<script type="text/javascript">' . "\n";
echo '// <![CDATA[' . "\n";
echo '  var arrLines = new Array();' . "\n";

// Let's go through $data starting with element 0 to element lenght - 1
for($intL = 0; $intL < count($data); $intL++) 
{

// Let's add backslahes to quotes (" => \", ' => \') and backslashes (\ => \\)
$strLine = addslashes($data[$intL]);

// Let's replace the actual \n and \r to their representation...
// We don't want a carriage return at the end of the line before putting the quote !
$strLine = str_replace("\n", '\n', $strLine);
$strLine = str_replace("\r", '\r', $strLine);

// Let's print each line using this syntax :
//  arrLines[Position of the element] = "contents of the line with extra backslashes and transformed carriage returns";
printf(('  arrLines[%s] = "%s";' . "\n"), $intL, $line);
}

// Let's declare the closing part of the script element...
echo '// ]]>' . "\n";
echo '</script>' . "\n";

Pig · Nov 17, 2006

If you need to write a bunch of javascript in PHP, it is often easiest to write all the js code as you want it to appear, within a heredoc: http://us3.php.net/manual/en/language.types.string.php#language.types.string.syntax.heredoc

bobvaz · Nov 18, 2006

Suntra:
Thanks for your help, however I still cannot get the javascript to read the variable. Below is how I have coded your suggestion. below that is a copy of the results.....I guess I am a little dense but I do not get the variable.
Pig: I am sorry but I did not follow the heredoc at all.

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html><head>

</head>
<BODY>
start of html
<script language="javascript" type="text/javascript">
<?php
$filename = "linksfile.txt";
$page[0] = "index.html";
$page[1] = "about.htm";
$page[2] = "news.htm";
$page[3] = "meminfo.html";
$page[4] = "contact.html";
$page[5] = "golf.htm";
$page[6] = "tennis.htm";
$page[7] = "fanda.htm";
$page[8] = "dining.htm";
$page[9] = "social.htm";
$page[10] = "weddings.htm";
$page[11] = "banquets.htm";
$page[12] = "contact.htm";
$page[13] = "PDFgallery.htm";
$page[14] = "faq-home.htm";
$green = "grdot.png\n";
$yellow = "yedot.png\n";
$none = "nodot.png\n";
$lfh = fopen($filename, 'w') or die("can't open file");
flock($lfh, LOCK_EX);
$i = 0;
while ($i < count($page))
{
$pagename =trim($page[$i]);
$linkdate = date ("Y-m-d ", filemtime($pagename));
$diff = (strtotime(date("Y-m-d")) - strtotime($linkdate)) / (60 60 24);

echo "file ".$pagename." Datem: ".$linkdate. " Diff: ".$diff."<br>";
if ($diff < 3)
{
fwrite($lfh, $green);

}

else if ($diff < 8)
{

fwrite($lfh, $yellow);
}
else
{

fwrite($lfh, $none);
}
$i++;
}
flock($lfh, LOCK_UN);
fclose($lfh);
}

// read file into array
$data = file($filename) or die("Could not read file!");
// loop through array and print each line
// Let's declare the script element according to X(HT)ML rules...
echo '<script type="text/javascript">' . "\n";
echo '// <![CDATA[' . "\n";
echo ' var arrLines = new Array();' . "\n";

// Let's go through $data starting with element 0 to element lenght - 1
for($intL = 0; $intL < count($data); $intL++)
{

// Let's add backslahes to quotes (" => \", ' => \') and backslashes (\ => \\) 
$strLine = addslashes($data[$intL]); 

// Let's replace the actual \n and \r to their representation... 
// We don't want a carriage return at the end of the line before putting the quote ! 
$strLine = str_replace("\n", '\n', $strLine); 
$strLine = str_replace("\r", '\r', $strLine); 

// Let's print each line using this syntax : 
//  arrLines[Position of the element] = "contents of the line with extra backslashes and transformed carriage returns"; 
printf(('  arrLines[%s] = "%s";' . "\n"), $intL, $line);

}

// Let's declare the closing part of the script element...
echo '// ]]>' . "\n";
echo '</script>' . "\n";

// print file contents
echo "-- ALL DONE --<br>";

?>
end of html
</script>
</BODY>
</HTML>

RESULT:
start of html ' . "\n"; // print file contents echo "-- ALL DONE --
"; ?> end of html

Pig · Nov 18, 2006

Here is a brief explanation of here docs. http://webhead.cc/main.php?inv=68&page=5

suntra · Nov 18, 2006

You inserted <script ...> before my code and </script> after it... but I already put them in the code... so you get something like this :

</script>
</script>

So of course, JS will return an error...

Will think a bit more tomorrow...

[RESOLVED] php array to javascript

Bbobvaz

Ssuntra

PPig

Bbobvaz

PPig

Ssuntra