I'm trying to use this php script in order to locate a stock quote from yahoo finance. The problem I'm having is that when the script is run it generates no results. This leads me to believe that my regular expression is incorrect, but when I use the same regex on myregextester.com it shows the results that I expect with the given input. Any help will be greatly appreciated. Also, my php may be incorrect for what I'm trying to do.
<html>
<head>
<title>Stock Quote from Nasdaq</title>
</head>
<body>
<?php
// choose stock to look at
$symbol = 'AMZN';
echo "<h1> Stock Quote for $symbol </h1>";
//echo 'this printed (1)<br />';
$theurl = 'http://finance.yahoo.com/q?s=AMZN';
//echo 'this printed (2)<br />';
$contents = file_get_contents($theurl);
//find the part of the page we want and output it
if (preg_match_all('/amzn">([0-9]+\.[0-9]+)/', $contents, $matches)) {
echo "The price for $symbol: ".$matches[1][0];
} else {
echo "No Results";
}
?>
</body>
</html>
What you are searching for is:
<span id="yfs_l10_amzn">221.37</span>
Your regex would succeed for that.
So your actual problem is retrieving the page. Besides the obnoxious $theurl variable name, you should just use file_get_contents instead of fread etc.
$contents = file_get_contents($theurl);
Worked in your snippet.
I just downloaded the url http://finance.yahoo.com/q?s=AMZN and looked at the page source. Done a seach for /amzn. One match. That was <a href="/marketpulse/AMZN">Market Pul.... Hence no match.
Need to have a rethink.
Escape the >
try this:
preg_match_all('/amzn"\>[0-9]+\.[0-9]+/',$contents, $matches);
Related
I select a list of names from mysqli database then display row details in display.php with if (isset($_GET['name']));
The link is
$str = strtoupper($str);
echo "<tr><td><a href='php/display.php?name=$str'>$str</a></td></tr>";
This executes correctly unless name contains '(apostrophe).
For instance $str (as input/click) shows as L'ECLIPSE but the <a> link only L'
The result in display.php is 'No data found for your request'
I have found exact same queries on this site but none of the answers have resolved my problem. Perhaps I am not implementing correctly.
I assume this is about escaping. But I know little about it.
<?php
$str = strtoupper($str);
echo "<tr><td><a href='php/display.php?name=".urlencode($str)."'>$str</a></td></tr>";
urlencode() the string first. So you don't get this kind of problems.
Try this code.
<?php
$str = strtoupper($str);
echo "<tr><td><a href='php/display.php?
name=".htmlspecialchars($str)."'>$str</a></td></tr>";
?>
Your Single quote becomes ' ;
I hope it will help
<?php echo $row["html"]; ?>
Inside of the $row["html"] there's:
<?php $Site->Nav($owner); ?>
but when I echo it, it only echoes:
Nav($owner); ?>
How may I print the full and make it usable, which means that it will print the function Nav?
I've tried to replace <?php with [[// i the database, and just before echoing it, I change back with replace. But without success
I think you need to use eval function of php. See the example below.
$string = 'cup';
$name = 'coffee';
$str = 'This is a $string with my $name in it.';
echo $str. "\n";
eval("\$str = \"$str\";");
echo $str. "\n";
Might be it can help.
Use eval function. It might solve your problem like this:
<?php echo eval($row["html"]); ?>
Keep the code as is in DB as if you are writing it in PHP file but without PHP opening and closing tags i.e. <?php and ?>. I haven't checked this (as i am not sure what $Site->Nav($owner); will do) but hope it would work in this case.
If I understand correctly you are wanting to output the results of $Site->Nav($owner);
I have no idea what this is expected to output, but assuming it is a string of some kind that you wish to display (hence echo) - an example of achieving this would be calling your code and have that method return the value, so you can echo it out. Ie:
function Nav($owner){
// Do your stuff
return 'Your Desired Output';
}
Then on your page you would have
<?php echo $Site->Nav($owner); ?>
Which would echo "Your Desired Output".
Hey guys I'm not too knowledgeable about this particular topic in PHP yet. Basically I wanted to get a certain content of the url source so for instance the code below will only echo that specific content from the source page. I wanted to do this for other websites and the script below has errors but that's just like a demo of what I want to accomplished.
<?php
$data = file_get_contents('http://www.jokesclean.com/OneLiner/Random/');
$data = getBetween($data,'<p class="c"> <font size="+2">',"</font></p>");
echo $data;
?>
All the information of the script above is located here
Use Simple HTML DOM to do this.
Read the manual to do this from here.
Its pretty simple.
//include simple_html_dom.php file.
include('../simple_html_dom.php');
// get DOM from URL or file
$html = file_get_html('http://www.jokesclean.com/OneLiner/Random/');
foreach($html->find('p[class=c]') as $e)
echo $e;
Just tested on my local system and it worked perfectly generating a random joke everytime i refresh
here's what i got on last refresh of this code.
.
It'd be best to use domdocument but you can also do it using regular expressions like the following.
$data = file_get_contents('http://www.jokesclean.com/OneLiner/Random/');
if ( preg_match('/\<font size="\+2"\>(.*?)\<\/font\>/', $data, $match) ) {
echo $match['1'];
}
else {
echo 'couldn\'t find a match';
}
Here is my HTML and I call external PHP
<!DOCTYPE html>
<html>
<body>
<h1>My First Heading</h1>
<script src="index.php"></script>
<p>My first paragraph.</p>
</body>
</html>
and my PHP Script
<?
$strFileName = "poom.bis";
$objFopen = fopen($strFileName, 'r');
if ($objFopen) {
while (!feof($objFopen)) {
$file = fgets($objFopen, 4096);
// echo $file;
echo "document.writeln('$file'+);";
}
fclose($objFopen);
}
$test = "hello world";
echo "document.writeln(
'<ul>'+
'<li>.$test.</li>'+
'<li>test2</li>'+
'<li>test3</li>'+
'</ul>'
);";
?>
It error when using document.write more than one time
What should I do to solve this problem
Please Advice
PS. use echo "document.writeln('$file'+);"; for one time there is no error and show a result
First error: your line
echo "document.writeln('$file'+);";
should be
echo "document.writeln('$file');";
(without the plus sign). Also make sure that the file poom.bis doesn't contain a newline, not even at the end. If it does, you have to strip them away (trim()).
Second error was (until you edited it) the use of document.writeIn (which doesn't exist) instead of document.writeln (which does).
Tested and it works.
Also, while I'm at it, since you asked for advice how to solve this problem: look at your browser's error console and try to debug it.
echo '<script>document.writeln(';
echo '"<ul><li>test1</li><li>test2</li><li>test3</li></ul>"';
echo ');</script>';
;
I haven't found anytihng in Google or the PHP manual, believe it or not. I would've thought there would be a string operation for something like this, maybe there is and I'm just uber blind today...
I have a php page, and when the button gets clicked, I would like to change a string of text on that page with something else.
So I was wondering if I could set the id="" attrib of the <p> to id="something" and then in my php code do something like this:
<?php
$something = "this will replace existing text in the something paragraph...";
?>
Can somebody please point me in the right direction? As the above did not work.
Thank you :)
UPDATE
I was able to get it working using the following sample:
Place this code above the <html> tag:
<?php
$existing = "default message here";
$something = "message displayed if form filled out.";
$ne = $_REQUEST["name"];
if ($ne == null) {
$output = $existing;
} else {
$output = $something;
}
?>
And place the following where ever your message is to be displayed:
<?php echo $output ?>
As far as I can get from your very fuzzy question, usually you don't need string manipulation if you have source data - you just substitute one data with another, this way:
<?php
$existing = "existing text";
$something = "this will replace existing text in the something paragraph...";
if (empty($_GET['button'])) {
$output = $existing;
} else {
$output = $something;
}
?>
<html>
<and stuff>
<p><?php echo $output ?></p>
</html>
but why not to ask a question bringing a real example of what you need? instead of foggy explanations in terms you aren't good with?
If you want to change the content of the paragraph without reloading the page you will need to use JavaScript. Give the paragraph an id.<p id='something'>Some text here</p> and then use innerHTML to replace it's contents. document.getElementById('something').innerHTML='Some new text'.
If you are reloading the page then you can use PHP. One way would be to put a marker in the HTML and then use str_replace() to insert the new text. eg <p><!-- marker --></p> in the HTML and $html_string = str_replace('<!-- marker -->', 'New Text', $html_string) assuming $html_string contains the HTML to output.
If you are looking for string manipulation and conversion you can simply use the str_replace function in php.
Please check this: str_replace()
If you're using a form (which I'm assuming you do) just check if the variable is set (check the $_POST array) and use a conditional statement. If the condition is false then display the default text, otherwise display something else.