note 68520 deleted from function.strstr by bjori
| From: | bjori@php.net | Date: | Tue, 01 Aug 2006 08:56:38 +0000 |
| Subject: | note 68520 deleted from function.strstr by bjori | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-115390@lists.php.net to get a copy of this message | ||
Note Submitter: repley at freemail dot it
Reason: in docs
----
Bugfix of my previous post:
now work if the position of $needle in $haystack was the 0th (first) character.
Regards from Italy.
<?
//strxstr(string haystack, string needle [, bool int leftinclusive [, bool int rightinclusive ]])
function strxstr($haystack, $needle, $l_inclusive = 0, $r_inclusive = 0){
// Note our use of !==. Now work if the position of $needle in $haystack was the 0th (first)
character.
if(strrpos($haystack, $needle) !== false){
//Everything before first $needle in $haystack.
$left = substr($haystack, 0, strpos($haystack, $needle) + $l_inclusive);
//Switch value of $r_inclusive from 0 to 1 and viceversa.
$r_inclusive = ($r_inclusive == 0) ? 1 : 0;
//Everything after first $needle in $haystack.
$right = substr(strstr($haystack, $needle), $r_inclusive);
//Return $left and $right into an array.
$a = array($left, $right);
return $a;
}else{
return false;
}
}
//start test
$haystack_array = array("....unknown.txt.log.......gif.....jpeg", "/index.html",
"index.html", "http://www.example.com/", "/folder_one/",
"/folder_one/folder_two/", "folder_two/");
$needle_array = array(".", "/", ".", "/", "/",
"/", "/");
$count_haystack = count($haystack_array);
$count_needle = count($needle_array);
if($count_haystack == $count_needle){
$l_inclusive = 1; //1 for inclusive mode, 0 for NOT inclusive mode
$r_inclusive = 1; //1 for inclusive mode, 0 for NOT inclusive mode
for($pointer = 0; $pointer < $count_haystack; $pointer++) {
$haystack = $haystack_array[$pointer];
$needle = $needle_array[$pointer];
$a = strxstr($haystack, $needle, $l_inclusive, $r_inclusive);
if($a){echo "Left: <strong>" . $a[0] . "</strong><br /> Right:
<strong>" . $a[1] . "</strong><br /><br />";}else{echo
"Failed!<br />";}
}
}else{
echo 'Count of "$haystack_array" and count of "$needle_array" are not
equal!';
}
//end test
?>
To explode around last occurrence of a character in a string, for example to get filename and
extension separately into an array, use strxchr(): http://www.php.net/manual/en/function.strrchr.php
Thanks to all.
Repley