saving php variables to script variables in a function

Question

Let's say I have 100 rows of php-variables that I want to save to javascript variables.

 $data1;
 $data2;
 $data3;
 $data4;
 ...
 $data99;
 $data100;

How can I save those variables in a function so I don't have to save it manually like:

var data1 = '<?php echo $data1; ?>';
...

Would be very great if it can be solved. So much work otherways :/

Adassko · Accepted Answer · 2013-10-25 09:15:45Z

2

pack them into an object, then use

var data = <?php echo json_encode($your_object); ?>;

answered Oct 25, 2013 at 9:15

Adassko

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1 Comment

PeterP Over a year ago

How do I do that? Pretty new to this @adassko

Realitätsverlust · Accepted Answer · 2013-10-25 09:18:07Z

2

Doesnt work. PHP is serverside, javascript clientside. When the JS is initialised, PHP is done with its work. But you can either use AJAX or do a for-loop and write the javascript with PHP.

echo "<script>";
for($i = 0; $i < 100; $i++){ 
    echo "var data" . $i " = " . $data1 .";";
}
echo "</script>";

Untested.

answered Oct 25, 2013 at 9:18

Realitätsverlust

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6 Comments

Ben Fortune Over a year ago

This would echo the same variable 100 times.

Adassko Over a year ago

you probably meant ${'data' . $i'} and for($i = 1; $i <= 100; $i++)

Realitätsverlust Over a year ago

arf, yes, of course, just created a fast code without thinking.^^

PeterP Over a year ago

will try it :) @YUNOWORK

PeterP Over a year ago

Is this right? echo "var data" . $i " = " . ${'data' .$i}. "; "; It gives me just errors. @Adassko

|

0x_Anakin · Accepted Answer · 2013-10-25 09:27:16Z

1

If your variables are like the ones you posted and the number of variables is known you you could simply do:

$num_vars = 50;

for($i=0; $i < 50; $i++) {
   $tmp_var = "$data$i";
   if (is_numeric($tmp_var)) {
      echo "var myVar$i = $tmp_var;\n";
   } else {
      echo "var myVar$i = '$tmp_var';\n";
   }
}

Keep in mind the use of double quotes. PHP recognizes variables in double quotes. Also test if it is a number or a string as shown.

answered Oct 25, 2013 at 9:27

0x_Anakin

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Comments

Jonathan · Accepted Answer · 2013-10-25 09:15:53Z

0

You can store them in an array and then with a php for loop populate a javascript array with the values.

answered Oct 25, 2013 at 9:15

Jonathan

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Comments

Harish Singh · Accepted Answer · 2013-10-25 09:19:38Z

0

create an array of variables and then try to use json_encode

var data = <?php echo json_encode($data); ?>;
data = JSON.parse(data);
alert(data['data1']);

answered Oct 25, 2013 at 9:19

Harish Singh

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