php substring in string code example

Example 1: php check if string contains word

$myString = 'Hello Bob how are you?';
if (strpos($myString, 'Bob') !== false) {
    echo "My string contains Bob";
}

Example 2: if part of stringp ph

$a = 'How are you?';

if (strpos($a, 'are') !== false) {
    echo 'true';
}

Example 3: substr() php

<?php
echo substr('abcdef', 1);     // bcdef
echo substr('abcdef', 1, 3);  // bcd
echo substr('abcdef', 0, 4);  // abcd
echo substr('abcdef', 0, 8);  // abcdef
echo substr('abcdef', -1, 1); // f

// Accessing single characters in a string
// can also be achieved using "square brackets"
$string = 'abcdef';
echo $string[0];                 // a
echo $string[3];                 // d
echo $string[strlen($string)-1]; // f

?>

//substr() function returns certain bits of a string

Example 4: only display part of string php

substr('abcdef', 1);     // bcdef
substr('abcdef', 1, 3);  // bcd
substr('abcdef', 0, 8);  // abcdef
substr('abcdef', -1, 1); // f

Example 5: print only some characters of a string in php

substr(string,start,length)

Example 6: substr php

<?php
// Return "world" from the string:
echo substr("Hello world", 6);
?>