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How to get first 5 characters from string [duplicate]
How to get first 5 characters from string using php
5 Answers
5
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What is the difference between bindParam and bindValue?
...ute() is called.
And execute
call PDOStatement::bindParam() to bind PHP variables to the parameter markers: bound variables pass their value as input and receive the output value, if any, of their associated parameter markers
Example:
$value = 'foo';
$s = $dbh->prepare('SELECT name FROM...
Chain-calling parent initialisers in python [duplicate]
...ar though. Python is strong-dynamic. Something like Java is strong-static. PHP is weak-dynamic. Static typing guarantees (within some limits at least) that input parameters are the correct type. Strong typing means that the compiler/runtime will not attempt to coerce the value of one type to another...
Configure WAMP server to send email
Is there a way that I can configure the WAMP server for PHP to enable the mail() function?
7 Answers
...
How do I add 24 hours to a unix timestamp in php?
...add 24 hours to the timestamp for right now then simply you can do:
<?php echo strtotime('+1 day'); ?>
Above code will add 1 day or 24 hours to your current timestamp.
in place of +1 day you can take whatever you want, As php manual says strtotime can Parse about any English textual datet...
How do I implement basic “Long Polling”?
...rror 404 (to show error handling in the coming Javascript example)
msgsrv.php
<?php
if(rand(1,3) == 1){
/* Fake an error */
header("HTTP/1.0 404 Not Found");
die();
}
/* Send a string after a random number of seconds (2-10) */
sleep(rand(2,10));
echo("Hi! Have a random number: " . ...
Sort array of objects by object fields
... second argument. Here are some examples:
Using anonymous functions (from PHP 5.3)
usort($your_data, function($a, $b) {return strcmp($a->name, $b->name);});
From inside a class
usort($your_data, array($this, "cmp")); // "cmp" should be a method in the class
Using arrow functions (from...
Fatal Error: Allowed Memory Size of 134217728 Bytes Exhausted (CodeIgniter + XML-RPC)
...emory_limit', '-1'); is not a proper solution. Please don't do that.
Your PHP code may have a memory leak somewhere and you are telling the server to just use all the memory that it wants. You wouldn't have fixed the problem at all. If you monitor your server, you will see that it is now probably ...
Grabbing the href attribute of an A element
...t;getElementsByTagName('a') as $node) {
echo $dom->saveHtml($node), PHP_EOL;
}
The above would find and output the "outerHTML" of all A elements in the $html string.
To get all the text values of the node, you do
echo $node->nodeValue;
To check if the href attribute exists you can ...
Regular Expression for alphanumeric and underscores
...A-Z, a-z, or underscore (_).
Here is how you would do that:
Tested under php:
$regex = '/^[A-Za-z_][A-Za-z\d_]*$/'
or take this
^[A-Za-z_][A-Za-z\d_]*$
and place it in your development language.
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