RE: [PHP] Arrays : Key in Array, True/False
| From: | Neil Kimber | Date: | Fri, 30 Mar 2001 10:40:25 +0000 |
| Subject: | RE: [PHP] Arrays : Key in Array, True/False | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-46295@lists.php.net to get a copy of this message | ||
You need a 2 step approach.
1. extract the keys from your array into another array using array_keys()
2. check the result using in_array() to see if you key exists.
-----Original Message-----
From: Knut H. Hassel Nielsen [mailto:Knut.H.Hassel.Nielsen@idi.ntnu.no]
Sent: 30 March 2001 10:56
To: php-general@lists.php.net
Subject: [PHP] Arrays : Key in Array, True/False
Hi there
I have a script with a function that builds a more comprehensive kind
of array for parsing arguments given a script in PHP (this is a
backup-script I'm currently working on).
My problem is in "THE PARSING OF ARGS PART" when I'm asking the array
if the key exists in the array it returns 0. The key exists, I know
because of the output from the function ( var_dump($array) ), but the
function 'in_array()' only returns true if I ask for a value.
Does anyone know if I can use anything else to give me the possibility
to also ask for the keys, or do I have to write a 'in_array()'-kind of
function myself ??
#! /local/bin/php -q
<?PHP // -*- C++ -*-
function parse_arg( $argv, $argc ) {
$array = Array();
for ( $i = 0 ; $i < $argc ; $i++ ) {
if ( ereg( "-", $argv[ $i ] ) ) {
if ( ereg( "-", $argv[ $i + 1 ] ) ) {
$array[ "$argv[$i]" ] = "";
} else {
$array[ "$argv[$i]" ] = $argv[ $i + 1 ];
$i = $i + 1;
}
}
}
var_dump ($array);
return $array;
}
// THE PARSING OF ARGS PART
$arr = parse_arg( $argv, $argc );
if ( in_array( "-h", $arr ) ) { // This doesnt work
print $usage;
exit;
} elseif ( in_array( "-b", $arr ) ) { // This doesnt work
$backup = 1;
} elseif ( in_array( "-d", $arr ) ) { // This doesnt work
while ( list ( $key, $val ) = each ( $arr ) ) {
if ( $key == "-d" ) {
if ( $val == "" ) {
print "No PATH to switch \"-d\"\nExiting\n";
exit;
} else {
$dir = $val;
if ( !is_dir( $dir ) ) {
print "This directory [$dir] doesnt exist\n";
exit;
} else {
$run = 1;
}
}
}
}
}
?>
--
Knut
------
Knut H. Hassel Nielsen
Principal Engineer / Avdelingsingeniør
Norwegian University of Science and Technology / NTNU
Department of Computer and Information Science / IDI
N-7491 Trondheim, Norway
Phone Office / Telefon jobb : (+47) 73 59 18 46
Fax Office / Telefax jobb : (+47) 73 59 17 33
Cell. Phone / Mobiltelefon : 91 59 86 06
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