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1.Is it possible to set a time expire page in PHP.? Yes it is
Using header("Expires: fri, 07 mar 2007 05:00:00 GMT");
<?php
header("Expires: fri, 07 mar 2007 05:00:00 GMT");
?> 2.How can we SAVE an image from a remote
web Server to my web server using PHP? <?php
$file_rimg = fopen("http://w3answers /image23.jpg",'rb');
$newfile_name_img = "/tmp/tutorial.file";
$file_wnew = fopen($newfile_name_img,'wb');
while (!feof($file_rimg)) {
$chunk_rd = fread($file_rimg,1024);
fwrite($file_wnew,$chunk_rd);
}
fclose($file_wnew);
fclose(file_rimg);
?>
www.phpguru.biz. 3.What is the output of 2^2 in php ? The answer is 0 (Zero)
Important note
Everyone expected answer would be 4.But answer is zero.How it happened only in php ?
The ^ operator is different in each language.In PHP ^ means the bitwise exlusive or of the two numbers.
www.phpguru.biz. 4.What is the output of below script? <?php
$x = 3;
switch ($x) {
case 2: echo 'line 1'; break;
case 3:
case 4: echo 'line 2'; break;
default: echo 'line 3';
}
?>
a. echo 'line 3';
b. echo 'line 2';
c. Error
d. None of the above
Ans: b (Answer is line2)
5.What is the output here? <?php
$x = 'ravi';
echo ‘Hello $x’;
?>
a. helloravi
b. Parse error
c. hello $x
d. syntax error
ANS: c
published by www.phpguru.biz. 6.What output do you get here? www.phpguru.biz.com
<?php
$list = array("clock","scissors","pen","dog");
$list[] = "elephant";
$list[] = "dragon";
print "$list[4]";
?>
a. Error
b. elephant
c. dog
d. nothing
ANS: b (elephant) 7.what is the output? <?php
echo 10+FALSE;
?>
a. 10
b. no
c. parse error
d. T_ECHO error
ANS: 10
www.phpguru.biz. 8.What is the output here? <?php
$x=7;
if ($x < 2) { echo "11"; }
elseif ($x < 16) { echo "12"; }
elseif ($x <1 4) { echo "13"; }
elseif ($x > 14) { echo "14"; }
elseif ($x < 10) { echo "15"; }
else { echo "16"; }
?>
a.16
b.15
c.14
d.17
ANS:14 9.What is the output here? <?php
echo "www.phpguru.biz.";
$x = '';
switch ($x) {
case "0": echo "String"; br;
case 0: echo ""; break;
case NULL: echo "NULL"; br;
case FALSE: echo "heeder"; br;
case "": echo "no string"; br;
default: echo "nothing else"; br;
}
?>
a. Something else
b. Empty string
c. Integer
d. String
ANS: Integer 10.What is the answer of following code? <?php
function x ($y) {
function y ($z) {
return ($z*2); }
return($y+3); }
$y = 4;
$y = x($y)*y($y);
echo "$y";
?>
a. None
b. 54
c. 56
d. 58
ANS:56
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