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PHP String Exercises: Check whether a string contains a specific string

PHP String: Exercise-3 with Solution

Write a PHP script to check whether a string contains a specific string?

Sample string : 'The quick brown fox jumps over the lazy dog.'
Check whether the said string contains the string 'jumps'.

Pictorial Presentation:

PHP String Exercises: Check whether a string contains a specific string

Sample Solution:

PHP Code:

<?php
$str1 = 'The quick brown fox jumps over the lazy dog.';
if (strpos($str1,'jumps') !== false) 
 {
    echo 'The specific word is present.';
 }
else
 {
    echo 'The specific word is not present.';
 }
?>

Sample Output: 

The specific word is present.

Flowchart :

Flowchart: Check whether a string contains a specific string

PHP Code Editor:

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Previous: Write a PHP script to split the specific string.
Next: Write a PHP script to convert the value of a PHP variable to string.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



PHP: Tips of the Day

How to Sort Multi-dimensional Array by Value?

Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:

Example:

function sortByOrder($a, $b) {
    return $a['order'] - $b['order'];
}

usort($myArray, 'sortByOrder');

Starting in PHP 5.3, you can use an anonymous function:

usort($myArray, function($a, $b) {
    return $a['order'] - $b['order'];
});

And finally with PHP 7 you can use the spaceship operator:

usort($myArray, function($a, $b) {
    return $a['order'] <=> $b['order'];
});

To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.

usort($myArray, function($a, $b) {
    $retval = $a['order'] <=> $b['order'];
    if ($retval == 0) {
        $retval = $a['suborder'] <=> $b['suborder'];
        if ($retval == 0) {
            $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder'];
        }
    }
    return $retval;
});

If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual

Ref : https://bit.ly/3i77vCC