With strstr you can find a certain letter, number, or symbol in a string. A basic function could be to figure out if an email address is valid or not.
$email = "email@email.com";
$domain = strstr($email,"@");
$dot = strstr($domain,".");
if ($domain "")
{
do something
}
else
{
do something else
}
?>
The strstr in $domain is looking for "@" in $email and the strstr in $dot is looking for a "." in $domain. The if means if $domain and $dot equal nothing(it would show up as blank because there is no "@" in $email so the strstr in $domain returns false and that would in turn return the strstr in $dot as false also), do something. then the else is if $domain and $dot equal something besides "" do something else.
The stristr function is just a Case-Insensitive version of strstr.
Rasmus Lerdorf released PHP publicly on June 8, 1995 to accelerate bug location and improve the code. This release was named PHP version 2 and already had the basic functionality that PHP has today.
There must be a statement in the file which calls the function
To empty an array in PHP you need to use the unset function like shown below: <?php $array = array('hello', 'hi', 'weee'); unset($array); // empty ?>
To find the size of an array in PHP you can either use the count() function or the sizeof() function as they will produce the same result. <?php $array = array(1, 2, 3, 4, 5, 6, 7); echo count($array); // outputs 7 echo sizeof($array); // outputs 7 ?>
Answer: Php 2510% of Php 250= 10% * Php 250= 0.10 * Php 250= Php 25
I think you mean language construct... Anyway, a function usually takes one or more arguments as comma separated values or variables. echo and print don't <?php $email = 'user@example.com'; $domain = strstr($email, '@'); echo $domain; // prints @example.com ?> Here the strstr function takes a variable string and a constant string as an argument. echo simply displays the contents of the resulting variable. There are a couple functions that don't require arguments, like die() & exit()
Rasmus Lerdorf released PHP publicly on June 8, 1995 to accelerate bug location and improve the code. This release was named PHP version 2 and already had the basic functionality that PHP has today.
in php used for one typ website
we cant use set timeout function in php because it is of java script function
Below is a simple example of how you could return a value in a PHP function. <?php function returnme($value) { return $value; } echo returnme('hello'); // outputs: hello ?>
function function_name() { .................... }
The eval() function evaluates a string as PHP code. http://us.php.net/manual/en/function.eval.php
array_column is of course a function, additional functionality was even added in 7.0.0. The only problems I could imagine would be if you are missing the underscore (it is array_column()), or that some part of your installation was corrupt. If the underscore didn't fix it, you could try reinstalling PHP.
A simple function call <html> <body> <?php if(isset($_POST['button'])) { setValue(); // Function is called } function setValue() { echo "<br>The button property to call PHP function works"; // Your code here } ?> <input type="submit" name="button" onclick=<?php $_SERVER['PHP_SELF']; ?> /> </body> </head>
chdir() PHP function helps in changing the current directory.
It gets options from the command line argument list. It can be used in PHP 4.3 and above, including PHP 5.
With a call to the function func_num_args().