i have a for loop that will loop through a set of page in php.
for ($count=0;$count<=$curr;$count=$count + 10)
{
if ($find==1) {
$result = "file.php?count=$count";
}else {
$result = "file2.php?count=$count";
}
$match = file_get_contents($result);
$nc=$count+10;
if (preg_match("/\b$file\b/i", $match)) {
print "found in $count";
} else {
print "not found in $count";
}
}
the problem is that the result is displayed after the last page is executed, since it will loop through 500 pages which takes more time. so how can i make this code display the print result as it is executed each cycle,
while(something)
{
// do something
echo "Hi";
flush();
}
Using the flush() function will output everything to the browser that has been sent so far (sent as in echo, print or other similar functions.).
Related
I was wondering if it's possible to have an if statement within an echo.
I have if statement which works fine when echoing results through the a while loop... This is the statement:
<div><?php if ($row['image'] == '') {}
else {echo "<img src='data:image/jpeg;base64,".base64_encode($row['image'])."'>";} ?>
<?php if ($row['video'] == '') {}
else {echo "<iframe src={$row['video']}></iframe>";} ?></div>`
So basically it's either a video or an image which works fine but then I implemented an infinite scroll to my blog which echoes the data from the database through and if statement like so:
if ($results) {
while($obj = $results->fetch_object())
{
echo '
<div><h3>'.$obj->headline.'</h3> </div>
<div><img src='data:image/jpeg;base64,".base64_encode('.$obj->image.')."'></div>'
So I wondering if anyone knows if it's possible to transfer that if statement within this echo so that it display an image firstly and then knows whether one is present or when a video is present within the database.
Thanks in advance for any help.
PS: I'm very new to coding/php!
Of course. Just split up the echo into multiple statements:
while($row = $results->fetch_object()) {
echo '<div>';
if ($row['image'] == '') {
} else {
echo "<img src='data:image/jpeg;base64,".base64_encode($row['image'])."'>";
}
if ($row['video'] == '') {
} else {
echo "<iframe src={$row['video']}></iframe>";
}
echo '</div>';
}
Try this one.
//first initialize a variable as a string
$result="";
while($obj = $results->fetch_object()) {
$result.="<div>";
if (!empty($obj['image'])){
$result.="<img src='data:image/jpeg;base64,".base64_encode($obj['image'])."'>";
}
elseif (!empty($obj['video'])){
$result.="<iframe src={$obj['video']}></iframe>";
}else{
//show some notification or leave it
//echo 'not Found';
}
$result.="</div>";
}
//finally you need to print the result variable.
echo $result;
this is by Far the weirdest thing i have ever seen and i am completely confused. please someone help me with this.
$variable=array();
$count=0;
// now im am going to loop through a resource that i made
while(!feof($job))
{
$data=fgets($job);
// i am search for different things below. search for name, date, employer
// i am using regex to search btw
// presume object in class works fine, and they do.
if(search for eg name in $data, storing in $variable[$count].first($match))
// the problem is at this point i will have access to
// $variable[$count].getFirst(returns value set by first) which was set above;
if(search for eg Employer in $data, storing in variable[$count].next($match))
// i will have access here as well
// $variable[$count].getFirst(returns value set by first) which was set above
if(search for 3rd search in $data, storing in variable[$count].name($match))
// down here after the second if i am not able to see any of my variables set more than 2 if statements ago????
// $variable[$count].getFirst(does not returns the value set by first()) which was set above
if(search for 4th search in $data, storing in variable[$count].foo($match))
// check if everything is set then count++;
}
Now each one of these methods are completely dependent from the next but after 2 if statements. I am just not able to access $variable[count]->getfirst()
the answer is null;
edited
this is the actual code
require "functions/decodeEncodedUrl.php";
require "objects/jobObject.php";
$url=decodeEncodedUrl();
$profile=array();
$companies=0;
$url_search='http://www.jobbank.gc.ca/';
$startReading=0;
$job=fopen($url['url'], 'r')or die("JobBanks is failing to respond.<br>Please Try again Later");
while(!feof($job))
{
set_time_limit(500);
$profile[$companies]= new jobProfile();
$trash=fgets($job);
if(!$startReading)
{
if(preg_match('~RepeaterSearchResults_hypJobItem_[0-9]+~',$trash,$matches))
{
$startReading=true;
}
}
if($startReading)
{
$data=$trash;
if(preg_match("~href=\".*\"~",$data,$matches))
{
$temp=preg_replace("~href=~",'',$matches[0]);
$temp=preg_replace("~\"~",'',$temp);
$profile[$companies]->setLink($url_search.$temp);
var_dump($profile[$companies]);
echo "<br>";
echo "<br>";
}
if(preg_match("~>[A-Za-z-, ]+\(~",$data,$matches))
{
$temp=preg_replace("~>|\(~",'',$matches[0]);
$profile[$companies]->setPosition(ucfirst($temp));
var_dump($profile[$companies]);
echo "<br>";
echo "<br>";
}
if(preg_match("~# *[0-9]+~",$data,$matches))
{
$profile[$companies]->setOrderNum(preg_replace("~#| ~",'',$matches[0]));
var_dump($profile[$companies]);
echo "<br>";
echo "<br>";
}
if(preg_match("~Employer:</strong>.*~",$data,$matches))
{
$temp=preg_replace("~Employer:</strong> ~",'',$matches[0]);
$temp=preg_replace("~<br.*~",'',$temp);
$temp=ucfirst($temp);
$profile[$companies]->setEmployer($temp);
var_dump($profile[$companies]);
echo "<br>";
echo "<br>";
}
if(preg_match("~[$][0-9]+.*~",$data,$matches))
{
$temp=preg_replace("~/.*~",'',$matches[0]);
$profile[$companies]->setSalary(preg_replace("~[$]~","$ ",$temp));
var_dump($profile[$companies]);
echo "<br>";
echo "<br>";
}
if(preg_match("~[$][0-9]+.*~",$data,$matches))
{
$temp=preg_replace('~[$A-Za-z0-9. ]*[/] ?~','',$matches[0]);
$profile[$companies]->setRate(preg_replace('~<.*~','',$temp));
var_dump($profile[$companies]);
echo "<br>";
echo "<br>";
}
if(preg_match("~Location:.*~",$data,$matches))
{
$temp=preg_replace('~.*;~','',$matches[0]);
$temp=preg_replace('~^ |,~','',$temp);
$profile[$companies]->setCity(ucfirst($temp));
//echo ucfirst($temp)."<br>";
}
if(preg_match("~Location[:<>/\,A-Za-z ]*~",$data,$matches))
{
$profile[$companies]->setProvince($matches[0]);
//echo " ".$matches[0]."<br>\n";
//echo $profile[$companies]->getLocation()."\n<br>";
}
if(preg_match("~[0-9]{4}/[0-9]{2}/[0-9]{1,2}~",$data,$matches))
{
echo $profile[$companies]->displayHTML();
$profile[$companies]->setDate($matches[0]);
if($profile[$companies]->allDataSet())
{
//echo "data was set"."<br>";
$startReading=false;
$companies++;
}
else
{
$startReading=false;
$companies++;
echo "Data was Not set";
}
}
}
}
fclose($job);
everything works except the $profile[number] doesn't store anything in it at all after the 3 rd if statement when the variable is stored.
If
{
//Profile[number] info stored
}
if
{
//Profile[number] info available
}
if
{
//profile[number] info available
}
if
{
//profile[number] info is gone
}
variable[$count].next($match)
the .next() moves the internal pointer to the next element in the array.
i'm using JSON to get data and then PHP to display. so...
i'm showing everything available to a person and i want to echo a message when the loop is blank/empty that "there's nothing available" because right now it just shows a blank screen when there is no data... any ideas??
<?
foreach($json['available'] as $r) {
echo '<li>' .$r['item'].'</li>';
}}
?>
Just use an if statement and check if $json['available'] is empty with empty().
if( empty( $json['available'])) {
echo '<li>No items are available</li>';
} else {
foreach($json['available'] as $r) {
echo '<li>' .$r['item'].'</li>';
}
}
Use empty to check if $json contains something or not.
Assuming that $json['available'] is going to be an empty array at worst:
if (!$json['available']) {
echo "nothing to show!";
}
else {
// your current code
}
If it's possible that $json['available'] might not even exist, a more "heavy-handed" alternative is
if (empty($json['available'])) {
echo "nothing to show!";
}
I'm looking for a function like and if else statement for php which will execute certain html code.
For example:
<?php>
$result = 1;
if ($result == 1)
<?>
html code
else
html code
So, based off the result variable gotten from php scripts, a certain html page is output. I've tried echoing the entire html page, but it just displays the html code-> tags and such.
Hopefully you get what I'm trying to get across, ask if you need any clarification questions. Thanks!
That should work:
<?php
$result = 1;
if($result==1) {
?>
html code
<?php
} else {
?>
html code
<?php
}
?>
The problem I'm facing with the if else statement, is in order to display the html, I have to exit php coding. Thus, the if else statement will not work. (Link)
This is not entirely true. You can use the approach below:
<?php
// Do evaluations
if ( $result == "something" )
{
?>
<p>Example HTML code</p>
<?php
} elseif ( $result == "another thing")
{
?>
<span>Different HTML code</p>
<?php
} else {
?>
<h4>Foobar.</h4>
<?php
}
// Rest of the PHP code
?>
Or, if you don't want to exit PHP coding, you can use the echo or print statements. Example:
<?php
// Evaluations
if ( $result == "foo" )
{
echo "<p>Bar.</p>";
} else {
echo "<h4>Baz</p>";
}
// Some else PHP code
?>
Just be careful with proper sequences of ' and " characters. If your HTML tags are to have arguments, you should watch your step and use either of the following approaches:
echo "<span class=\"foo\">bar</span>";
echo '<span class="foo">bar</span>";
If you want to evaluate some PHP and print the HTML results later, you could use something like this
<?php
$output = "";
if ( $result == "something" ) {
$output = '<p>Example HTML code</p>';
} else if ( $result == "another thing") {
$output = '<span>Different HTML code</p>';
} else {
$output = '<h4>Foobar.</h4>';
}
// Output wherever you like
echo $output;
?>
EDIT (because I'm not sure what you;re trying to do so i'm just putting out different ideas):
If you're trying to output an entire page, it may be useful to use header('location: newPage.html'); instead of $output. This redirects the browser to an entirely new web page. Or you can likely include newPage.html as well.
very close:
<?php
$result = 1;
if ($result == 1){
?>
html code
<?php } //close if
else {
?>
html code
<?php
} //close else
?>
you can echo html code something like this
<?php
$result = 1;
if ($result == 1){
echo "<h1>I love using PHP!</h1>";
}
?>
this would output if Result is 1
**I love using PHP!** //but slightly bigger since its H1
I cannot get my PHP script to echo the second else statement if the first result empty.
The way my script currently works is "Print Addresses (from another array) > List Comments", however even if a comment is empty for an address is will either print the comments or nothing, I cannot make the script echo the word "No comment".
if(!empty($row['id']))
{
echo "$row[comment]<br/>";
}
else
{
echo "no comment<br/>";
}
Any help appreciated. Thanks.
Assuming this comes from a database and each row has an id, this will always be true:
if(!empty($row['id']))
Try:
if(!empty($row['comment']))
If id is something else, the same logic applies: check the value that you intend to print:
if (!empty($row['id']) && !empty($row['comment']))
{
echo $row['comment'].'<br/>';
}
else
{
echo "no comment<br/>";
}
EDIT: If this code is looping through all comments attached to a post or something, there will never be any output if there are no comments to loop through. In that case try something like this:
if (count($comments) === 0)
{
echo "no comments<br />";
}
else
{
foreach ($comments as $row)
{
if (!empty($row['comment']))
{
echo $row['comment'].'<br />';
}
else
{
echo "no comment<br />";
}
}
}
OR:
$comment_count = 0;
foreach ($comments as $row)
{
if (!empty($row['comment']))
{
echo $row['comment'].'<br />';
$comment_count++; // We have at least one comment
}
else
{
echo "no comment<br />";
}
}
if ($comment_count === 0) echo 'no comments<br />';