[RESOLVED] Function in PHP

saidulhoque

At first I want to clarify that I am newbie. I have started learning PHP from last week. I have a question about function in PHP.

strlen(), strpos() - these functions are not user defined function. is var_dump() user defined function? Moreover, can anyone provide me a list of non-user defined functions for PHP?

laserlight

Refer to the PHP manual.

NogDog

You can normally find any PHP built-in function by using the following URL format:

http://php.net/<function_name>

For example: http://php.net/var_dump

saidulhoque

laserlight;11041525 wrote:
Refer to the PHP manual.

Thanks for the information. But I want a complete list.

laserlight

saidulhoque wrote:
Thanks for the information. But I want a complete list.

If you look a little further down that page, you will find a function reference, and then there's a search bar towards the top of the page. Moreover, as NogDog noted in post #3, you can directly search the PHP manual.

NogDog

<!DOCTYPE html>
<html>
<head><title>PHP Built-In Functions</title></head>
</html>
<body>
<ul>
<h1>PHP Built-In Functions</h1>
<?php
$functions = get_defined_functions();
foreach($functions['internal'] as $funcName) {
    echo "<li><a href='http://php.net/$funcName'>$funcName</a></li>\n";
}
?>
</ul>
</body>
</html>

🙂

Weedpacket

Or you can even look in the manual for the complete list given there.
[man]indexes.functions[/man]

dalecosp

saidulhoque;11041523 wrote:
Moreover, can anyone provide me a list of non-user defined functions for PHP?

The fellows have answered this well, Weedpacket even giving you a silver platter.

A quick and easy answer, fraught with practical advice: any function that you don't find in your source code preceded by the word "function" is a non-user-defined function 😉