Linux Ask! is a Q & A web site specific for Linux related questions. Questions are collected, answered and audited by experienced Linux users.
Calculate PHP script's execution time
Answer:
If you want to estimate the PHP script's execution time, you can try something like the following:
<?php
$time_start = microtime(true);
// some long running codes...
$time_end = microtime(true);
echo "Time (msec) passed: " , $time_end - $time_start;
Generate UUID in PHP
Answer:
To generate UUID in PHP, you can try the script below:
<?php
function uuid($prefix = '') {
$chars = md5(uniqid(mt_rand(), true));
$uuid = substr($chars,0,8) . '-';
$uuid .= substr($chars,8,4) . '-';
$uuid .= substr($chars,12,4) . '-';
$uuid .= substr($chars,16,4) . '-';
$uuid .= substr($chars,20,12);
return $prefix . $uuid;
}
echo uuid();
It shows something like the following when executed:
c664b9b4-6c44-c8d9-acf9-93ef0e11e435
Clone an object in PHP
Answer:
It is easy to clone an object in PHP, using the following method.
<?php
$obj = new stdClass();
$obj->foo = "foo";
$obj->bar = "bar";
$new_obj = clone $obj;
var_dump ( new_obj );
It will print out...
object(stdClass)#2 (2) {
["foo"]=>
string(3) "foo"
["bar"]=>
string(3) "bar"
}Create an array containing a range of elements in PHP
Answer:
It is easy to create an array using the range() function, e.g.
<?php
foreach (range(0, 10) as $number) {
echo $number, " ";
}
It shows following when executed:
0 1 2 3 4 5 6 7 8 9 10
Convert array to object in PHP
Answer:
It is easy to cast an object to an array in PHP, using the following method.
<?php
$obj = new stdClass();
$obj->foo = "foo";
$obj->bar = "bar";
var_dump ( (array) $obj );
It will print out...
array(2) {
["foo"]=>
string(3) "foo"
["bar"]=>
string(3) "bar"
}
