Use strpos() to check if a string contains another string:
<?php
if (strpos($_SERVER['HTTP_REFERER'], 'pagea.php') !== false) {
echo 'from page a';
}
Pergunta
I am filtering a page with $_SERVER['HTTP_REFERER']
.
Let "pageb.php" filter whether a user have come from "pagea.php" (although it is not reliable) by $_SERVER['HTTP_REFERER']
.
It works well until "pagea.php" has a preceding query string like "pagea.php?q=10". Then if a user goes from "pagea.php?q=10" to "pageb.php" it is not detected by "pageb.php":
if($_SERVER['HTTP_REFERER']='http://pagea.php'){
echo 'This user has come from page a';
}else{
echo 'This user has come from another page';
}
How can I detect a user came from "pagea.php" even with preceding query string q=10
?
Solução
Use strpos() to check if a string contains another string:
<?php
if (strpos($_SERVER['HTTP_REFERER'], 'pagea.php') !== false) {
echo 'from page a';
}
Outras dicas
use comparision operator not assignment if($_SERVER['HTTP_REFERER']='http://pagea.php'){
= will be ==