25 + PHP Function List
This is a list of 25 interesting PHP functions that are useful in different situations. This is a list of 25 interesting PHP functions that are useful in different situations.
Ceil () :
Round number up to the nearest integer,
- echo (ceil(0.60)); ====> 1.
- echo (ceil(0.45)); ====> 1.
- echo (ceil(-1.3)); ====> -1.
- echo (ceil(-4.3)); ====> -4.
Rounded value getting only nearest integer value print.
Count () :
The count function returns the number of elements in an array.
<?php
$color= array(“red”,”black”,”yellow”);
echo Count ($color);
?>
====> 3
die () :
- die (message );
<?php
$connection = mysqli_connect(“localhost”,”root “,””,”db_name”);
or die (“netword unavilable”);
?>
empty () ; :
<?php
$a =10 ;
if(empty($a))
{
echo “variable ‘a’ is empty”;
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}
if(isset($a))
{
echo “variable ‘a’ is set “;
}
?>
define () and Constant () :
define (name , value ,case insesitive);
- A constants value connot be changed after it is set .
- Constant names do not need a leading dollar sign ($).
- Constants can be arrested regardless of scope.
- Constant values can only be string and number.
<?php
define (“GREETING” ,”hello you ! how are you” );
echo constant(“GREETING”);
?>
Output: hello you ! how are you
defined (name); :
<?php
define (“GREETING”,”hello you! how are you “);
echo defined (“GREETING”);
?>
Output: hello you ! how are you.
file_get_contents () :
Read a file into a string.
file_get_contents (file name) ;
<?php
$content=file_get_contents(‘file_name.txt ‘);
echo $content;
?>
