Passing a variable to another php page

Question

From comprobar.php

marcarpagado.php gets NULL, why?

echo '<a href="marcarpagado.php?id=<?php echo $id; ?>">Marcar como pagado</a>';

In marcarpagado.php:

echo $_GET['id'];

what do you see in the source though? is there an actual value for id? i think you'll find $id isn't echoing out the way you think it is. — thescientist, Feb 19 '14 at 12:29

score 3 · Accepted Answer · answered Feb 19 '14 at 12:29

3

You are using echo two times.

It should be like this

echo "<a href='marcarpagado.php?id=".$id."'>Marcar como pagado</a>";

answered Feb 19 '14 at 12:29

Sumit Bijvani

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Single quotes dont allow the variable to be echoed – markcial Feb 19 '14 at 12:33
Why not a function like sprintf? – markcial Feb 19 '14 at 12:34

krishna · Answer 2 · 2014-02-19T12:45:39.127

0

You are using php tag again inside php and echo inside echo .so

change

  echo '<a href="marcarpagado.php?id=<?php echo $id; ?>">Marcar como pagado</a>';

to

echo "<a href='marcarpagado.php?id=$id'>Marcar como pagado</a>";

edited Feb 19 '14 at 12:45

answered Feb 19 '14 at 12:28

krishna

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wild · Answer 3 · 2014-02-19T12:34:27.143

0

invalid format php tag in echo statement

      echo '<a href="marcarpagado.php?id=<?php echo $id; ?>">Marcar como pagado</a>';

replace it with

echo "<a href='marcarpagado.php?id=$id'>Marcar como pagado</a>";

edited Feb 19 '14 at 12:34

answered Feb 19 '14 at 12:28

wild

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Marty · Answer 4 · 2014-02-19T12:34:36.417

0

You seem to be mixing your PHP

ie:

echo '<a href="marcarpagado.php?id=<?php echo $id; ?>">Marcar como pagado</a>';

within this string you another set of php tags, the string should read

echo '<a href="marcarpagado.php?id='.$id.'">Marcar como pagado</a>';

have a look here for string operators http://www.php.net/manual/en/language.operators.string.php

edited Feb 19 '14 at 12:34

answered Feb 19 '14 at 12:29

Marty

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There is no need for echo when using the dot append operator – markcial Feb 19 '14 at 12:34
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hehe, copy and paste! forgot to remove the echo.. :) – Marty Feb 19 '14 at 12:35

score 0 · Answer 5 · answered Feb 19 '14 at 12:31

0

try this:

echo '<a href="marcarpagado.php?id='.$id.'">Marcar como pagado</a>';

answered Feb 19 '14 at 12:31

Muthu

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score 0 · Answer 6 · answered Feb 19 '14 at 12:32

0

Change it to : echo '<a href="marcarpagado.php?id='. $id .'">Marcar como pagado</a>';

answered Feb 19 '14 at 12:32

Prasanth Bendra

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markcial · Answer 7 · 2014-02-19T13:00:43.240

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Use a function like sprintf :

echo sprintf('<a href="marcarpagado.php?id=%d">Marcar como pagado</a>',$id);

edited Feb 19 '14 at 13:00

answered Feb 19 '14 at 12:36

markcial

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`echo sprintf()` is an "antipattern". There is absolutely no reason that anyone should ever write `echo sprintf()` in any code for any reason -- it should be `printf()` without `echo` every time. – mickmackusa Apr 09 '22 at 08:14

score 0 · Answer 8 · edited Feb 19 '14 at 13:17

0

Nested echo is not supported in php.

edited Feb 19 '14 at 13:17

Sven Hohenstein

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answered Feb 19 '14 at 12:47

Md. Helal Uddin

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Passing a variable to another php page

8 Answers8