how to replace everything after specific word in php - php

Question

$url =file("list.txt");
foreach ($url as $sites) {
$sites = trim($sites);
echo $sites . " </ br>";
}
and list.txt contain some urls
http://example.com/cms/wp-content/themes/
http://example.com/wp-content/plugins/
http://example.com/wp-content/themes/Avada-Child-Theme/
how could i remove the word "/wp-content/" and everything after it
to be
http://example.com/cms
http://example.com
http://example.com

Answer 1

Take a look at the the parameter $before_needle at http://docs.php.net/strstr
$o = strstr($url, '/wp-content/', true);

Answer 2

How about using preg_replace?
Something like that:
$sites = trim(preg_replace( '#/wp-content.*#', '', $sites));

Answer 3

This should work:
<?php
$url =file("list.txt");
foreach ($url as $sites) {
$sites = trim($sites);
$pos = strpos($sites, 'wp-content');
$newStr = substr($sites,0,$pos );
echo $newStr . " </ br>";
}
?>

Answer 4

$lines = file('list.txt');
$find = '/wp-content/';
foreach ($lines as $line) {
$line = trim($line);
$pos = strpos($line, $find);
if($pos !== false) {
echo substr($line, 0, $pos) . '<br>';
} else {
echo 'Not found ' . $find . '<br>';
}
}

Answer 5

First explode your content by new line then loop through each and use substr function to remove the matches. Following function my be useful to you:
<?php
// can remove variables from: full url, from urls related to site root, form just a query string like "a=1&b=2"
if(!function_exists("remove_var_from_url")){
function remove_var_from_url($variable_name, $url_string){
// this is anything before the "?" sign
$base_url = '';
// the variable separator, can be "?" if is a full URL or can be empty, if we just have "&sort=sales&oprder=asc"
$separator = "";
$start_pos = 0;
$return_string = "";
//
if(strpos($url_string,"?")!==false){
$start_pos = strpos($url_string, "?")+1;
$separator = "?";
$base_url = substr($url_string, 0, $start_pos-1);
}
// start building the string from the base url (which can be empty)
$return_string = $base_url;
$url_vars_string = substr($url_string, $start_pos);
$names_and_values = explode("&", $url_vars_string);
//
foreach($names_and_values as $value){
list($var_name, $var_value) = explode("=", $value);
if($var_name != $variable_name){
// add the "?" once if needed
if(!$separator_added){
$return_string.= $separator;
$separator_added = true;
} else {
$return_string.= "&";
}
$return_string.= $var_name."=".$var_value;
}
}
// remove "&" from margins
$return_string = trim($return_string, "&");
// remove the "?" if is at the end, it means it was just one variable that was removed
$return_string = rtrim($return_string, "?");
return $return_string;
}
}
?>

Answer 6

I would rather suggest you to apply strpos on each of the string first. Strpos will return you the position of first occurance of a string. Then use substr to fetch everything prior to that string.
` $lines = file('list.txt');
$find = '/wp-content/';
foreach ($lines as $line) {
$position = strpos($line, '/wp-content');
if($position)
$string = substr($line, 0, $position);
}`