Re: [PHP] a quick question about array keys
Quickest way I can think of would be to do something like
$tmp = array();
foreach($old_array as $key = $value)
{
$tmp[$value] = $key;
}
But knowing PHP there is probably some array_reverse_keys() function.
Regards,
-Josh
Joshua Kehn | josh.k...@gmail.com
http://joshuakehn.com
On Aug 31, 2010, at 11:43 AM, Tontonq Tontonq wrote:
a quick question
lets say i have an array like that
Array
(
[300] = 300
[301] = 301
[302] = 302
[303] = 303
[304] = 304
[305] = 305
[306] = 306
[307] = 307
[308] = 308
...
how can i change keys to 0,1,2,3,.. by faster way
(it should like that)
Array
(
[0] = 300
[1] = 301
[2] = 302
[3] = 303
--
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Re: [PHP] a quick question about array keys
On Tue, 2010-08-31 at 18:43 +0300, Tontonq Tontonq wrote:
a quick question
lets say i have an array like that
Array
(
[300] = 300
[301] = 301
[302] = 302
[303] = 303
[304] = 304
[305] = 305
[306] = 306
[307] = 307
[308] = 308
...
how can i change keys to 0,1,2,3,.. by faster way
(it should like that)
Array
(
[0] = 300
[1] = 301
[2] = 302
[3] = 303
There are two ways I see to do it. You can iterate the array and create
a copy, assigning elements dynamic values:
$new_array = array();
foreach($array as $a)
{
$new_array[] = $a;
}
or use a sorting function on it that doesn't preserve the keys (as in
your example all the values in the array were in numerical order.
$new_array = sort($array);
Having said that, if the key isn't important, and it doesn't seem to be
if you want to change it, then why not use a foreach and leave the key
as it is?
Thanks,
Ash
http://www.ashleysheridan.co.uk
Re: [PHP] a quick question about array keys
The fastest way is going to be array_values(): http://www.php.net/array_values --Larry Garfield On 8/31/10 10:43 AM, Tontonq Tontonq wrote: a quick question lets say i have an array like that Array ( [300] = 300 [301] = 301 [302] = 302 [303] = 303 [304] = 304 [305] = 305 [306] = 306 [307] = 307 [308] = 308 ... how can i change keys to 0,1,2,3,.. by faster way (it should like that) Array ( [0] = 300 [1] = 301 [2] = 302 [3] = 303 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
On Tue, 2010-08-31 at 11:46 -0400, Joshua Kehn wrote:
Quickest way I can think of would be to do something like
$tmp = array();
foreach($old_array as $key = $value)
{
$tmp[$value] = $key;
}
But knowing PHP there is probably some array_reverse_keys() function.
Regards,
-Josh
Joshua Kehn | josh.k...@gmail.com
http://joshuakehn.com
On Aug 31, 2010, at 11:43 AM, Tontonq Tontonq wrote:
a quick question
lets say i have an array like that
Array
(
[300] = 300
[301] = 301
[302] = 302
[303] = 303
[304] = 304
[305] = 305
[306] = 306
[307] = 307
[308] = 308
...
how can i change keys to 0,1,2,3,.. by faster way
(it should like that)
Array
(
[0] = 300
[1] = 301
[2] = 302
[3] = 303
That doesn't actually answer the question, it just changes the key/value
pairs around. There is a built-in function for this in PHP, but it's not
what the OP asked for.
Thanks,
Ash
http://www.ashleysheridan.co.uk
Re: [PHP] a quick question about array keys
On Aug 31, 2010, at 11:46 AM, Ashley Sheridan wrote:
On Tue, 2010-08-31 at 11:46 -0400, Joshua Kehn wrote:
Quickest way I can think of would be to do something like
$tmp = array();
foreach($old_array as $key = $value)
{
$tmp[$value] = $key;
}
But knowing PHP there is probably some array_reverse_keys() function.
Regards,
-Josh
Joshua Kehn | josh.k...@gmail.com
http://joshuakehn.com
On Aug 31, 2010, at 11:43 AM, Tontonq Tontonq wrote:
a quick question
lets say i have an array like that
Array
(
[300] = 300
[301] = 301
[302] = 302
[303] = 303
[304] = 304
[305] = 305
[306] = 306
[307] = 307
[308] = 308
...
how can i change keys to 0,1,2,3,.. by faster way
(it should like that)
Array
(
[0] = 300
[1] = 301
[2] = 302
[3] = 303
That doesn't actually answer the question, it just changes the key/value
pairs around. There is a built-in function for this in PHP, but it's not what
the OP asked for.
Thanks,
Ash
http://www.ashleysheridan.co.uk
I misread the question as flipping array keys, my mistake.
Regards,
-Josh
Joshua Kehn | josh.k...@gmail.com
http://joshuakehn.com
Re: [PHP] a quick question about array keys
On 31 August 2010 16:43, Tontonq Tontonq root...@gmail.com wrote: a quick question lets say i have an array like that Array ( [300] = 300 [301] = 301 [302] = 302 [303] = 303 [304] = 304 [305] = 305 [306] = 306 [307] = 307 [308] = 308 ... how can i change keys to 0,1,2,3,.. by faster way (it should like that) Array ( [0] = 300 [1] = 301 [2] = 302 [3] = 303 $array = array_values($array); Or, if you don't want to preserve the original array AND you want the data sorted ... sort($array); -- Richard Quadling Twitter : EE : Zend @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
Ty four your all replies i got 9 replies less than 10 minutes :) than can u answer this too my array is like that for now Array ( [300] = 300 [301] = 301 [302] = 302 [303] = 303 [304] = 304 [305] = 305 [306] = 306 [307] = 307 [308] = 308 [309] = 309 [310] = 310 [311] = 311 [312] = 312 [313] = 313 [314] = 314 [165] = 165 [166] = 166 [167] = 167 [168] = 168 [169] = 169 [170] = 170 [171] = 171 [172] = 172 [173] = 173 [201] = 201 [202] = 202 [203] = 203 [204] = 204 [205] = 205 [206] = 206 [207] = 207 [208] = 208 [209] = 209 [210] = 210 [211] = 211 [212] = 212 [213] = 213 [214] = 214 [215] = 215 [315] = 315 how can i make an array that will store values like Array ( [0] = 300-314 [1] = 165-173 ) i hope if u did understand me :D 2010/8/31 la...@garfieldtech.com la...@garfieldtech.com The fastest way is going to be array_values(): http://www.php.net/array_values --Larry Garfield On 8/31/10 10:43 AM, Tontonq Tontonq wrote: a quick question lets say i have an array like that Array ( [300] = 300 [301] = 301 [302] = 302 [303] = 303 [304] = 304 [305] = 305 [306] = 306 [307] = 307 [308] = 308 ... how can i change keys to 0,1,2,3,.. by faster way (it should like that) Array ( [0] = 300 [1] = 301 [2] = 302 [3] = 303 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
On Tue, 2010-08-31 at 19:06 +0300, Tontonq Tontonq wrote:
Ty four your all replies i got 9 replies less than 10 minutes :)
than can u answer this too
my array is like that for now
Array
(
[300] = 300
[301] = 301
[302] = 302
[303] = 303
[304] = 304
[305] = 305
[306] = 306
[307] = 307
[308] = 308
[309] = 309
[310] = 310
[311] = 311
[312] = 312
[313] = 313
[314] = 314
[165] = 165
[166] = 166
[167] = 167
[168] = 168
[169] = 169
[170] = 170
[171] = 171
[172] = 172
[173] = 173
[201] = 201
[202] = 202
[203] = 203
[204] = 204
[205] = 205
[206] = 206
[207] = 207
[208] = 208
[209] = 209
[210] = 210
[211] = 211
[212] = 212
[213] = 213
[214] = 214
[215] = 215
[315] = 315
how can i make an array
that will store values like
Array
(
[0] = 300-314
[1] = 165-173
)
i hope if u did understand me :D
2010/8/31 la...@garfieldtech.com la...@garfieldtech.com
The fastest way is going to be array_values():
http://www.php.net/array_values
--Larry Garfield
On 8/31/10 10:43 AM, Tontonq Tontonq wrote:
a quick question
lets say i have an array like that
Array
(
[300] = 300
[301] = 301
[302] = 302
[303] = 303
[304] = 304
[305] = 305
[306] = 306
[307] = 307
[308] = 308
...
how can i change keys to 0,1,2,3,.. by faster way
(it should like that)
Array
(
[0] = 300
[1] = 301
[2] = 302
[3] = 303
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
I'd use a loop for something like that:
$new_array = array('0-300'=0, '301-400'=0, '401-500'=0, '501+'=0);
foreach($old_array as $a)
{
switch(true)
{
case $a = 300:
{
$new_array['0-300']++;
break;
}
case $a = 400:
{
$new_array['301-400']++;
break;
}
case $a = 500:
{
$new_array['401-500']++;
break;
}
default:
{
$new_array['501+']++;
break;
}
}
}
Thanks,
Ash
http://www.ashleysheridan.co.uk
Re: [PHP] a quick question about array keys
On 31 August 2010 16:45, Ashley Sheridan a...@ashleysheridan.co.uk wrote:
There are two ways I see to do it. You can iterate the array and create
a copy, assigning elements dynamic values:
$new_array = array();
foreach($array as $a)
{
$new_array[] = $a;
}
or use a sorting function on it that doesn't preserve the keys (as in
your example all the values in the array were in numerical order.
$new_array = sort($array);
sort() operates in the array. It does not return a new array, just a
bool to indicate success or not.
http://docs.php.net/sort
--
Richard Quadling
Twitter : EE : Zend
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
Have a look at the manual, especially the function array_values(). /frank Skickat från min iPhone. 31 aug 2010 kl. 17:43 skrev Tontonq Tontonq root...@gmail.com: a quick question lets say i have an array like that Array ( [300] = 300 [301] = 301 [302] = 302 [303] = 303 [304] = 304 [305] = 305 [306] = 306 [307] = 307 [308] = 308 ... how can i change keys to 0,1,2,3,.. by faster way (it should like that) Array ( [0] = 300 [1] = 301 [2] = 302 [3] = 303 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
On Tue, 2010-08-31 at 19:06 +0300, Tontonq Tontonq wrote: Ty four your all replies i got 9 replies less than 10 minutes :) than can u answer this too my array is like that for now Array ( [300] = 300 [301] = 301 [302] = 302 [303] = 303 [304] = 304 [305] = 305 [306] = 306 [307] = 307 [308] = 308 [309] = 309 [310] = 310 [311] = 311 [312] = 312 [313] = 313 [314] = 314 [165] = 165 [166] = 166 [167] = 167 [168] = 168 [169] = 169 [170] = 170 [171] = 171 [172] = 172 [173] = 173 [201] = 201 [202] = 202 [203] = 203 [204] = 204 [205] = 205 [206] = 206 [207] = 207 [208] = 208 [209] = 209 [210] = 210 [211] = 211 [212] = 212 [213] = 213 [214] = 214 [215] = 215 [315] = 315 how can i make an array that will store values like Array ( [0] = 300-314 [1] = 165-173 ) i hope if u did understand me :D 2010/8/31 la...@garfieldtech.com la...@garfieldtech.com The fastest way is going to be array_values(): http://www.php.net/array_values --Larry Garfield On 8/31/10 10:43 AM, Tontonq Tontonq wrote: a quick question lets say i have an array like that Array ( [300] = 300 [301] = 301 [302] = 302 [303] = 303 [304] = 304 [305] = 305 [306] = 306 [307] = 307 [308] = 308 ... how can i change keys to 0,1,2,3,.. by faster way (it should like that) Array ( [0] = 300 [1] = 301 [2] = 302 [3] = 303 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php Oops, I slightly mis-read the question there in my last post. I'm not actually sure what it is you *are* after though. Thanks, Ash http://www.ashleysheridan.co.uk
Re: [PHP] a quick question about array keys
On Tue, 2010-08-31 at 16:58 +0100, Richard Quadling wrote:
On 31 August 2010 16:45, Ashley Sheridan a...@ashleysheridan.co.uk wrote:
There are two ways I see to do it. You can iterate the array and create
a copy, assigning elements dynamic values:
$new_array = array();
foreach($array as $a)
{
$new_array[] = $a;
}
or use a sorting function on it that doesn't preserve the keys (as in
your example all the values in the array were in numerical order.
$new_array = sort($array);
sort() operates in the array. It does not return a new array, just a
bool to indicate success or not.
http://docs.php.net/sort
Ah, my bad!
Thanks,
Ash
http://www.ashleysheridan.co.uk
Re: [PHP] a quick question about array keys
On 31 August 2010 17:06, Tontonq Tontonq root...@gmail.com wrote:
Array
(
[300] = 300
[301] = 301
[302] = 302
[303] = 303
[304] = 304
[305] = 305
[306] = 306
[307] = 307
[308] = 308
[309] = 309
[310] = 310
[311] = 311
[312] = 312
[313] = 313
[314] = 314
[165] = 165
[166] = 166
[167] = 167
[168] = 168
[169] = 169
[170] = 170
[171] = 171
[172] = 172
[173] = 173
[201] = 201
[202] = 202
[203] = 203
[204] = 204
[205] = 205
[206] = 206
[207] = 207
[208] = 208
[209] = 209
[210] = 210
[211] = 211
[212] = 212
[213] = 213
[214] = 214
[215] = 215
[315] = 315
$newData = array();
$firstValue = null;
$lastValue = null;
foreach($data as $value)
{
// New first value.
if (is_null($firstValue))
{
$firstValue = $value;
$lastValue = null;
}
// New last value and is the same or 1 more.
if (is_null($lastValue))
{
$lastValue = $value;
}
// Is the value this or the next value from $lastValue
else if($value == $lastValue || $value == 1 + $lastValue)
{
$lastValue = $value;
}
// We have a break;
else
{
$newData[] = $firstValue-$lastValue;
$firstValue = $lastValue = null;
}
}
--
Richard Quadling
Twitter : EE : Zend
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
i think its my mistake it will begin from first value of array it will continue until if its more big than +2 and it 2010/8/31 Ashley Sheridan a...@ashleysheridan.co.uk On Tue, 2010-08-31 at 19:06 +0300, Tontonq Tontonq wrote: Ty four your all replies i got 9 replies less than 10 minutes :) than can u answer this too my array is like that for now Array ( [300] = 300 [301] = 301 [302] = 302 [303] = 303 [304] = 304 [305] = 305 [306] = 306 [307] = 307 [308] = 308 [309] = 309 [310] = 310 [311] = 311 [312] = 312 [313] = 313 [314] = 314 [165] = 165 [166] = 166 [167] = 167 [168] = 168 [169] = 169 [170] = 170 [171] = 171 [172] = 172 [173] = 173 [201] = 201 [202] = 202 [203] = 203 [204] = 204 [205] = 205 [206] = 206 [207] = 207 [208] = 208 [209] = 209 [210] = 210 [211] = 211 [212] = 212 [213] = 213 [214] = 214 [215] = 215 [315] = 315 how can i make an array that will store values like Array ( [0] = 300-314 [1] = 165-173 ) i hope if u did understand me :D 2010/8/31 la...@garfieldtech.com la...@garfieldtech.com The fastest way is going to be array_values(): http://www.php.net/array_values --Larry Garfield On 8/31/10 10:43 AM, Tontonq Tontonq wrote: a quick question lets say i have an array like that Array ( [300] = 300 [301] = 301 [302] = 302 [303] = 303 [304] = 304 [305] = 305 [306] = 306 [307] = 307 [308] = 308 ... how can i change keys to 0,1,2,3,.. by faster way (it should like that) Array ( [0] = 300 [1] = 301 [2] = 302 [3] = 303 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php Oops, I slightly mis-read the question there in my last post. I'm not actually sure what it is you *are* after though. Thanks, Ash http://www.ashleysheridan.co.uk
Re: [PHP] a quick question about array keys
On 31 August 2010 17:39, Richard Quadling rquadl...@gmail.com wrote:
On 31 August 2010 17:06, Tontonq Tontonq root...@gmail.com wrote:
Array
(
[300] = 300
[301] = 301
...
Not sure what happened there!
?php
$data = array
(
300 = 300,
301 = 301,
302 = 302,
303 = 303,
304 = 304,
305 = 305,
306 = 306,
307 = 307,
308 = 308,
309 = 309,
310 = 310,
311 = 311,
312 = 312,
313 = 313,
314 = 314,
165 = 165,
166 = 166,
167 = 167,
168 = 168,
169 = 169,
170 = 170,
171 = 171,
172 = 172,
173 = 173,
201 = 201,
202 = 202,
203 = 203,
204 = 204,
205 = 205,
206 = 206,
207 = 207,
208 = 208,
209 = 209,
210 = 210,
211 = 211,
212 = 212,
213 = 213,
214 = 214,
215 = 215,
101 = 101,
315 = 315,
316 = 316,
987 = 987,
);
$newData = array();
$firstValue = null;
$lastValue = null;
foreach($data as $value)
{
// New first value.
if (is_null($firstValue))
{
$firstValue = $value;
$lastValue = null;
}
// New last value and is the same or 1 more or ongoing value
else if ((is_null($lastValue) $value == 1 + $firstValue) || $value
== 1 + $lastValue)
{
$lastValue = $value;
}
// We have a break;
else
{
if (!is_null($lastValue))
{
$newData[] = $firstValue-$lastValue;
}
else
{
$newData[] = $firstValue;
}
$lastValue = null;
$firstValue = $value;
}
}
if (!is_null($firstValue))
{
if (!is_null($lastValue))
{
$newData[] = $firstValue-$lastValue;
}
else
{
$newData[] = $firstValue;
}
}
print_r($newData);
?
outputs ...
Array
(
[0] = 300-314
[1] = 165-173
[2] = 201-215
[3] = 101
[4] = 315-316
[5] = 987
)
--
Richard Quadling
Twitter : EE : Zend
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY
--
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Re: [PHP] a quick question about array keys
On 31 August 2010 17:49, Richard Quadling rquadl...@gmail.com wrote: On 31 August 2010 17:39, Richard Quadling rquadl...@gmail.com wrote: On 31 August 2010 17:06, Tontonq Tontonq root...@gmail.com wrote: Array ( [300] = 300 [301] = 301 ... If you add a ... sort($data) ... just before the foreach() loop... Array ( [0] = 101 [1] = 165-173 [2] = 201-215 [3] = 300-316 [4] = 987 ) Watch out for duplicate values. I changed 315 and 316 to 305 and 306... unsorted ... Array ( [0] = 300-314 [1] = 165-173 [2] = 201-215 [3] = 101 [4] = 305-306 [5] = 987 ) sorted ... Array ( [0] = 101 [1] = 165-173 [2] = 201-215 [3] = 300-305 [4] = 305-306 [5] = 306-314 [6] = 987 ) -- Richard Quadling Twitter : EE : Zend @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
