This question already has answers here:
What is the difference between client-side and server-side programming?
(3 answers)
Closed 9 years ago.
<script>
$('#tes').click(function(){
<?php $output = '';
foreach( $votes as $array)
if($array->color === $colors->color)
$output = $output . $array->votes . '<br>';?>
$('#Result').html(<?php $output ?>);
});
</script>
how should I rewrite it to make it work?
Messy code issues aside, this:
<?php $output ?>
Should be:
<?php echo $output ?>
Also note that your JavaScript html() function will need a string, which means quotes around the HTML. Something like:
$('#Result').html("<?php $output ?>")
But then if your PHP $output has quotes in it, that'll break. So then you'll need to look at addslashes().
While this should fix your current issues, the commenters are right that this is a horribly messy/ugly way to write code, you need to refactor this significantly.
Suggestion: One way to make this a bit cleaner would be like this:
// At the top of your page
<?php
$output = '';
foreach( $votes as $array) {
if($array->color === $colors->color) {
$output .= $array->votes . '<br>';
}
}
?>
// Down in your HTML code somewhere
<div id="output" style="display:none"><?php echo $output ?></div>
// Now for the much simpler javascript
<script>
$('#tes').click(function(){
$("#output").show();
});
</script>
This way you have minimal mixing of PHP with HTML/JS, you don't have to worry about escaping quotes, the PHP $output is already on your page (hidden) ahead of time, and JavaScript just has to show it.
Related
This question already has answers here:
What is the difference between client-side and server-side programming?
(3 answers)
Closed 4 years ago.
I am trying to add if statemenet into $html variable. But it see php as a html tag. how can add this statement. Thanks
$html = '
<?php if (x=y):?>
<div>
Help me )
</div>
<?php endif ?>
';
Try following
$html = '';
if(x==y):
$html .= '<div> Help me )</div>';
endif;
You can do without closing php tags.
Edited
After #MichałSkrzypek comment I have edited and fix mistake in if statement
What you are trying to do is impossible. If you would want to echo the var, you would put <?php inside of <?php, which must result in an error. Only add
<div>
Help me )
</div>
to a var.
i would to know what is good practice for writing code to put all HTML code inside PHP function and in my front index.php file just call function to show code.
class.php:
public function test() {
$sql='select id,title from test ';
$nem=$this->db->prepare($sql);
$nem->execute();
$nem->bind_result($id,$title);
echo '<ul class="centreList">';
while($nem->fetch())
{
echo '<li>'.$id.'<a href="'.$title.'" >Download</a></li>';
}
echo '</ul>';
}
index.php:
<?php $connection->test(); ?>
This work fine, but I would like to know is this proper way or is not a good practice to use html code inside PHP functions?
It's ok to build HTML within PHP, but I would not echo to the screen directly from within the function. Instead, return the built HTML string.
$html = '<ul class="centreList">';
while($nem->fetch())
{
$html .= '<li>'.$id.'<a href="'.$title.'" >Download</a></li>';
}
$html .='</ul>';
return $html
The function should not be responsible for pushing content to the browser because it really limits what you can do with your code. What if you wanted to further process the HTML? What if you run into a condition later in the code and decided to abort? What if you wanted to set some response headers later? Some content would already be gone so none of these things would be possible without clever workarounds.
In general you want to separate your responsibilities: I would even break things down further:
one piece of code is in charge of retrieving info from the DB and returning
Another piece is in charge of building the HTML string
A third piece is in charge of displaying the HTML (probably your index.php)
New index.php
<?= $connection->test(); ?>
Do not use echo to print the html directly, wrap the html within while loop surrounded by php tags
public function test() {
$sql='select id,title from test ';
$nem=$this->db->prepare($sql);
$nem->execute();
$nem->bind_result($id,$title);
return $nem;
}
<ul class="centreList">
<?php $res = test()->fetch();
while( $res->fetch() ) { ?>
<li> <?php echo $id ?> Download </li>;
<?php } ?>
</ul>
This question already has answers here:
Reference - What does this error mean in PHP?
(38 answers)
PHP parse/syntax errors; and how to solve them
(20 answers)
Closed 5 years ago.
for my issue i'll try to be as brief as possible
what am trying to do is reference a page with a specific id in the HTML anchor link with PHP as the below
<body>
<?php $linkName = "Second Page"; ?>
<?php $id = 5; ?>
<?php echo $linkName?><br>
and it works fine
now what am trying to do is to make the $id part more dynamic by making looping the number from 1 to 10 and also providing 10 links
the code is
</head>
<body>
<?php $linkName = "Second Page"; ?>
<?php $id = 5; ?>
<?php
for ($i=0; $i < 10 ; $i++) {
echo "<a href='secondPage.php?id=<?php echo $i;?'>Link1</a>";
};
?>
</body>
however what i did notice as the below images indicates when i hover on the links i noticed that i refer to a strange link
and when i cliched on it it takes me to the following link with an id that i did not want as below
http://localhost/PHP_Course/secondPage.php?id=%3C?php%20echo%201;?
i tried researching the subject and i tried escaping the quotation but it does not seem to resolve the problem
Any help please ??
<?php and ?> tags indicate to the PHP preprocessor that anything inside them is code and needs to be parsed, everything outside is just text PHP doesn't touch.
Inside the <?php tag, "<?php" string has no special meaning, so is printed. You do not need to open and close tags all the time, try this:
</head>
<body>
<?php
$linkName = "Second Page";
$id = 5;
for ($i = 0; $i < 10 ; $i++) {
echo "<a href='secondPage.php?id=$i;'>Link1</a>";
};
?>
</body>
You're echoing a string in PHP, and using <?php... inside that string.
Solution:
echo "<a href='secondPage.php?id=" . $i . "'>Link1</a>";
id=$i will also work, because you can include variables directly in double-quoted strings.
You're echoing the PHP code itself as a string. You don't need to put PHP code inside of PHP code. Just concatenate the values you want to echo:
echo 'Link1';
because you already started an echo statement so you don't need to add another PHP starting and ending tags. just check my code below and try it.
<?php
for ($i=0; $i < 10 ; $i++) {
echo "<a href='secondPage.php?id=".$i."'>Link1</a>";
} ;
?>
I have got a Html and Javascript code, that contains about 1000 lines and I need to put it to php variable.
Sure I was thinking about the EOT method, But there is one problem with it, if there is word function like in javascript is, it will take it like php function, and this will cause errors.
Any other Idea how to do it?
I have already tried other forums, but they can't help me, so I hope they can help me on the best.
Maybe use output buffering...
<?php
ob_start();
?>
<b>
<u>
<font color="#FF0000">
<blink>
<marquee>
1000
LINES
OF
HTML
AND
JAVASCRIPT!
</marquee>
</blink>
</font>
</u>
</b>
<?php
$content = ob_get_contents();
ob_clean();
?>
Then your HTML and JavaScript will be in the $content variable.
You could read directly from an HTML file on disk, using file_get_contents().
You can use the EOF method.
There's no problem with reserved words in that case. (As far as I know)
EDIT:
$output .= <<<HTML
function bla()
{
//Something
}
HTML;
Won't be treated as a php function.
Try this;
class Temp
{
public function html($path)
{
ob_start()
require(path); // or file_get_contents(<URI>);
$html = ob_get_clean ();
return $html
}
}
$temp = new Temp();
$htmlData = $temp->html('somepath/somefile.php')
echo $htmlData;
its a simple logger function. I want to load an array to a DIV content:
document.getElementById('layout').innerHTML = '<?php foreach ($logs as $item) { echo str_replace(array('"',"'"), array ('"','''), $item).'<hr />'; } ?>';
because $logs can contain HTML elements, but not quotes, since they would ruin the echoing. It should be OK, but Firefox say "malformed Unicode character sequence" and it doesnt displayed. Now what?
use html entities to translate your html code into safe sequencies
I might be wrong, but it looks like you're trying to enter php code into your page using javascript. Javascript is client side, so if anything, you will get the full code, not the parsed code.
If you want the php to be run beforehand, so the actual code in your page will be a javascript that has the allready-parsed contents in it, you neet to make a string that contains the finished content AND add "'" for javascript to understand it.
This might look like this (haven't checked the foreach for you)
<?//this part is parsed before sending it to the client
$conts = "'";
foreach ($logs as $item) {
$conts .= str_replace(array('"',"'"), array ('"','''), $item);
$conts .= "<hr/>";
}
$conts .= "'";
?>
document.getElementById('layout').innerHTML = <? echo $conts ?>;