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PHP - What's The Difference Between Echo And Print In For's Expr3?
Hi!
I wonder why this code is working: for($i=0; $i<5; print $i++); while this code: for($i=0; $i<5; echo $i++); gives the error PHP Parse error: syntax error, unexpected T_ECHO, expecting ')' After spending some hours at php.net I learned that both calls ('echo' and 'print') are not real functions, but I wonder why they behave so different in the same context?! Also 'tricks' like for($i=0; $i<5; (echo $i), $i++); do not work. Is 'echo' just forbidden in that particular case? Best regards! Similar TutorialsHi, I am trying to get the form field to echo a php variable. The problem is that the form is 'Printed' via php. print "<td width=\"300\" valign=\"top\"><input type=\"text\" name=\"usr\" value=\"i.e. JBloggs \" onfocus=\"if(!this._haschanged){this.value=''};this._haschanged=true;\" tabindex=\"1\"></td>"; Instead of the value being i.e. JBloggs have it echo the $name variable. Any input would be appreciated. Should i be using print() or echo() for an xmlhttp.responsetext ? Code: [Select] <?php //================================================================ // Configure connection parameters $connect_string="DRIVER={Sybase SQL Anywhere 5.0}; SERVER=ACMSQL036A; DATABASE=BACKOFF"; $dbuser="DBA" $dbpswd="SQL" //================================================================ // Connect to DB $conn = odbc_connect($connect_string, $dbuser, $dbpswd); // Query $xrefnum = $_GET['ae_xrefnum']; $qry = "SELECT xrefnum, plunum FROM DBA.PLU_Cross_Ref where xrefnum = '$xrefnum'"; // Get Result $result = odbc_exec($conn,$qry); if (!$result) { echo odbc_errormsg($conn); } // Get Data From Result $row=odbc_fetch_array($result); // Show data print($row[plunum]); } // Free Result odbc_free_result($result); // Close Connection odbc_close($conn); //================================================================ ?> i have proof, hold on.
In PHP there are two basic ways to get output: echo and print.
meant there was more ways but they werent basic.
Edited by socialemo, 22 January 2015 - 01:33 AM. Hello guys, I want put one form into echo or print, but in the same time i want use $arrays on form. Take a look here <?php print "<form action="https://www.moneybookers.com/app/payment.pl" method="post" target="_blank"> <input type="hidden" name="pay_to_email" value="me@me.com"> <input type="hidden" name="status_url" value="$mail"> <input type="hidden" name="language" value="GR"> <input type="hidden" name="amount" value="$price"> <input type="hidden" name="currency" value="EUR"> <input type="hidden" name="detail1_description" value="$pack"> <input type="hidden" name="detail1_text" value="$review"> <input type="submit" value="Pay!"> </form>"; ?> but all this make an error. from what i can understand, i cant put second "" ine print Can u help me? Hey guys...I have a php that loads when the user is being taken after making a purchase. On that php file, echo and print are disabled...and I need to send a variable from that php file to flash, doesnt matter is flash, could be other php file, html, anyway... <param name="movie" value="retorno.swf?userId=<?php echo $Referencia; ?>" /> On the example above I am using echo $Referencia...I need some function to substitue echo/print... Any ideas??? Thanks in advance! I set up a form that you can type html code into. When you click submit it sends the form data to a php script that receives the data and then prints it. Basically im trying to accomplish something similar to this http://www.w3schools.com/html/tryit.asp?filename=tryhtml_intro. I have tried to print the html code using echo and print_r. The problem is that it is not displaying correctly. For instance if i were to type in Code: [Select] <body bgcolor="FFCC00"> Nothing would happen. Most of the html displays correctly. What is the reason behind this? Do i need to use a different command to print the form variable? Or do i need to save it as an html document then display it? OK, have no idea what's going on... I've done this a million times... why wont this output!?? I must have a major brain meltdown and dont know it yet!!! Code: [Select] <?php // this echoes just fine: echo $_POST['testfield']; // but this wont echo: echo if (isset($_POST['testfield'])) { $_POST['testfield'] = $test; } echo $test; /// or even this DOESNT echo either!: $_POST['testfield'] = $test; echo $test; ?> Hi All, I'm trying to echo the response from an SLA query, the query works and returns the data when I test it on an SQL application.. but when I run it on my webpage it won't echo the result. Please help? <?php $mysqli = mysqli_connect("removed", "removed", "removed", "removed"); $sql = "SELECT posts.message FROM posts INNER JOIN threads ON posts.pid=threads.firstpost WHERE threads.firstpost='1'"; $result = mysqli_query($mysqli, $sql); echo {$result['message']}; ?> So I need to echo a row from my database with php, but where i need to echo is already inside an echo. This is my part of my code: $con = mysql_connect("$host","$username","$password"); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("main", $con); $result = mysql_query("SELECT * FROM Vendor"); while($row = mysql_fetch_array($result)) { //I need to echo right here .................. but I get a blank page when I try this. Please Help. echo '<option value=$row['vendor_id']>'; echo $row['vendor_id']; echo '</option>'; } mysql_close($con); Result: A Blank page. Thanks in advance! I have a log system that allows 10 logs on each side(Left and right). I am trying to make it so that the left side has the 10 most recent logs, then the right as the next 10. Any ideas? Actually what's the difference between Code: [Select] if(...) and Code: [Select] if(isset(...) This is going to seem like a stupid question but I'm curious about it anyway. Isn't isset and !empty do the same? Considering security, is there a disadvantage in using $_REQUEST? Hi, In Php , What is the different ebtween abc() and @abc() ??? Please advice . I am working with wordpress and I see a lot of "if" statements done like this if(condition): do something endif; I have always done it like so if(condition) { do something } what is the difference? does the first method have any advantages over the second method? Hi
I try to echo out random lines of a html file and want after submit password to whole content of the same html file. I have two Problems.
1st Problem When I echo out the random lines of the html file I don't get just the text but the code of the html file as well. I don't want that. I just want the text. How to do that?
for($x = 1;$x<=40;$x++) {
$lines = file("$filename.html");
echo $lines[rand(0, count($lines)-1)]."<br>";
}
I tried instead of "file("$filename.html");" "readfile("$filename.html");" But then I get the random lines plus the whole content. Is there anything else I can use instead of file so that I get the random lines of text without the html code?P.S file_get_contents doesn't work either have tried that one.
2nd Problem:
As you could see in my first problem I have a file called $filename.html. After I submit the value of a password I want the whole content. But it is like the program did forget what $filename.html is. How can I make the program remember what $filename.html is? Or with other words how to get the whole content of the html file?
My code:
if($_POST['submitPasswordIT']){
if ($_POST['passIT']== $password ){
$my_file = file_get_contents("$filename.html");
echo $my_file;
}
else{
echo "You entered wrong password";
}
}
If the password isn't correct I get: You entered wrong password. If the password is correct I get nothing. I probably need to create a path to the file "$filename.html", but I don't know exactly how to do that.
I'm trying to subtract get the total number of days between two dates. I have been trying the DateTime date_diff method and the strtotime methods. I have it working mostly; but I have a problem with if the value should be negative. I've tried the invert() on the value that comes back from the date_diff() function but get errors. To sum up what I'm trying to do is:
if ( $diff === 0 )
//retrieve expected complete time
if ( isset( $stat[ 'expected_complete_time' ] ) ) {
$today = new DateTime("now");
$expected_complete_time = new DateTime($stat[ 'expected_complete_time' ]);
$today->setTime(12, 0, 0);
$expected_complete_time->setTime(12, 0, 0);
//calculate difference
$eta = date_diff($expected_complete_time, $today)->format("%d");;
//future
if ($today > $expected_complete_time) {
$eta = '+' . $eta;
//today
} elseif ($eta === '0') {
$eta = 'Today';
//overdue
} else {
$eta = 'LATE:-' . $eta;
}
} else
$eta = '';
For some reason when I echo $diff and $time_remaining it ALWAYS echos with values of 3 and 7 and not sure why. Code: [Select] $lock_date = $row['lock_date']; $current_time = time(); // Find out if user is locked out of their account if (($lock_date != "0000-00-00 00:00:00") && strtotime($lock_date) < $current_time) { $lock_date = strtotime($lock_date); $diff = $current_time - $lock_date; $diff = floor($diff/6000); // Take minutes and perform tasks if ($diff <= 10) { // Calculate time remaining $time_remaining = 10 - $diff; // Account locked error $errors = true; $message = "Account is locked! Must wait " .$time_remaining." minutes to log in again!"; $output = array('errorsExist' => $errors, 'message' => $message); } else { // Clear the lock $query = "UPDATE users_logins_attempts SET lockDate = NULL, ip_address = NULL, failed_logins = 0 WHERE users_id = '".$users_id."'"; $result = mysqli_query($dbc,$query); // Account locked error $errors = true; $message = "Account is unlocked. You may now try to log in again!"; $output = array('errorsExist' => $errors, 'message' => $message); } } hiii, Im wanting to calculate the time difference between $out2 and $in2 and out put it into a spreadsheet: Code: [Select] $m=0; while ($m < $num9) { $fullname=mysql_result($result9,$m,"username"); $date=mysql_result($result9,$m,"date"); $in1=mysql_result($result9,$m,"in1"); $out1=mysql_result($result9,$m,"out1"); $in2=mysql_result($result9,$m,"in2"); $out2=mysql_result($result9,$m,"out2"); $out2f=date("G:i:s",strtotime($out2)); $in2f=date("G:i:s",strtotime($in2)); echo date("D",strtotime($date)). "\t" . $fullname . "\t" . $in1 . "\t". $out1 . "\t" . $in2 . "\t" . $out2 . "\t" . date("G:i:s",strtotime($out2f-$in2f)) . "\t" . "\n"; $m++; } header("Content-disposition: attachment; filename=spreadsheet.xls"); why does this code return 00:00:00 ? |
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