php define code example

Example 1: strpos in php

<?php
$mystring = 'abc';
$findme   = 'a';
$pos = strpos($mystring, $findme);

// Note our use of ===.  Simply == would not work as expected
// because the position of 'a' was the 0th (first) character.
if ($pos === false) {
    echo "The string '$findme' was not found in the string '$mystring'";
} else {
    echo "The string '$findme' was found in the string '$mystring'";
    echo " and exists at position $pos";
}
?>

Example 2: define value in php

$var = 5; //int
$var = "hey"; //str
$var = 'A'; //char

Example 3: how to define function in php

<?php
function writeMsg() {
    echo "Hello world!";
}

writeMsg(); //call the function
?>

Example 4: define in php

//define() is used to create constants
define(name,value);
//here name has to be a string
//here value can be string, integer, float, boolean or NULL, 
//and can be an array to if you are using PHP 7.0+

//define() before php 7.3
define(name,value,case_insensitive);
//case_insensitive is optional and can be TRUE or FALSE by default its false

Example 5: define php

define("name", {value});