how to delete certain characters from a string in php

Question

For creating breadcrumbs i have a string as below:

$crumbs = explode("/", $_SERVER["REQUEST_URI"]);

This generates the following output:

/ sfm?dir=uploads / sfm / c4ca4238a0b923820dcc509a6f75849b / folder1 / folder2 /

How can i eliminate these first characters from the output:

/ sfm?dir=uploads / sfm /

so that it starts with the hash

Will it always be the first 2 elements or will it always be / sfm?dir=uploads / sfm /? — AbraCadaver
– AbraCadaver, Commented May 4, 2016 at 19:24

Rion Williams · Accepted Answer · 2016-05-04 19:43:35Z

4

There are a few easy ways to tackle this problem.

Consider Replacing Prior to Exploding

The first could be to simply perform your str_replace() call prior to the explode() function :

# Explicitly replace your input
$input = str_replace($_SERVER["REQUEST_URI"],'/sfm?dir=uploads/sfm/','');
# Then explode as expected
$crumbs = explode("/", $input);

Slice Off The First Two Elements

Another option would be to simply slice your original array and remove the first two elements from it via the array_slice() function:

# Explode your string into an array
$crumbs = explode("/", $_SERVER["REQUEST_URI"]);
# Trim off the first two elements of the array
$crumbs = array_slice($crumbs,2)

edited May 4, 2016 at 19:43

answered May 4, 2016 at 19:29

Rion Williams

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1 Comment

Webomatik Over a year ago

array_slice() is the only option if the first part (in this case '/ sfm?dir=uploads / sfm /') can change from one request to the other.

Sebastian Brosch · Accepted Answer · 2016-05-04 19:26:55Z

2

Try the following using str_replace():

$input = '/ sfm?dir=uploads / sfm / c4ca4238a0b923820dcc509a6f75849b / folder1 / folder2 /';
$replace = '/ sfm?dir=uploads / sfm /';
echo str_replace($replace, '', $input);

With your code the following should work:

$crumbs = $_SERVER["REQUEST_URI"];
$replace = '/ sfm?dir=uploads / sfm /';
$crumbs = str_replace($replace, '', $crumbs);
$crumbs = explode("/", $crumbs);

A working demo can be found here: https://3v4l.org/QOm4S

answered May 4, 2016 at 19:26

Sebastian Brosch

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rnpd · Accepted Answer · 2016-05-04 19:31:02Z

1

With explode you created an array so I would create a string or another array with the array data I want to be displayed

$crumbs = explode("/", $_SERVER["REQUEST_URI"]);

//For string

$breadcrumbs = $crumbs[2].$crumbs[3].$crumbs[4];

answered May 4, 2016 at 19:31

rnpd

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coffee_addict · Accepted Answer · 2016-05-04 19:36:37Z

1

There's no need to remove the first characters before exploding the string. You can slice the array to remove the url parts you dont need.

Example code:

$crumbs = explode('/', '/sfm?dir=uploads/sfm/c4ca4238a0b923820dcc509a6f75849b/folder1/folder2/');

$result = array_slice($crumbs, 3);

// Do something with result.

Your code will still work even when the first parts of the url start with something else.

Hope this helps

answered May 4, 2016 at 19:36

coffee_addict

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meidanisalekos · Accepted Answer · 2016-05-04 19:39:29Z

1

Or you can exclude this string while exploding the main string:

$crumbs = explode("/", $_SERVER["REQUEST_URI"]);
$new_string = "";
for ($i = 0 ; $i < count ($crumbs) ; $i++){
    if ($crumbs[$i] != 'sfm?dir=uploads'){
        $new_string .= '/' . $crumbs[$i];
    }
}
return $new_string; //This is your your string

answered May 4, 2016 at 19:39

meidanisalekos

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