From: bart at mediawave dot nl
Operating system: Any
PHP version: 5CVS-2005-04-01 (dev)
PHP Bug Type: Feature/Change Request
Bug description: Advanced imploding
Description:
------------
I often find myself being in the situation where I need more advanced ways
to implode() something. For example, a way to implode an array into:
"table1 AS alias1, table2 AS alias2, table3 AS alias3"
or:
"var1=value1&var2=value2&var3=value3"
I would like to make 3 suggestions to implement such a functionality in
PHP.
1) Extend implode so that it can handle a second (or more?) "glue"
argument.
$vars = array(
'var1' => 'value1',
'var2' => 'value2',
'var3' => 'value3'
);
or maybe it would need a multidimensional array:
$vars = array(
array('var1', 'value1'),
array('var2', 'value2'),
array('var3', 'value3')
);
echo implode($vars, '=', '&');
// Would print: var1=value1&var2=value2&var3=value3
The problem here is that implode would need to get its arguments in a
different order. Perhaps, this could be solved by creating a new function.
2) Modify array_map() so that, when the third argument is a string, it is
always passed along as an extra argument to all the function calls:
$vars = array(
array('var1', 'value1'),
array('var2', 'value2'),
array('var3', 'value3')
);
echo implode('&', array_map('implode', $vars, '='));
// Would print: var1=value1&var2=value2&var3=value3
3) This is probably the most powerfull and elegant solution. (My personal
favourite) Modify the __toString() magic method so that, when an object is
passed to a function that needs a string as input, __toString() is called.
In this example __toString() could be something like:
function __toString() {
return $this->name.'='.$this->value;
}
And the implode() code could look like:
$vars = array(
new urlVar('var1', 'value1'),
new urlVar('var1', 'value1'),
new urlVar('var1', 'value1')
);
echo implode($vars, '&');
// Would print: var1=value1&var2=value2&var3=value3
This could also produce more complex strings like:
"WHERE var1='value1' AND var2='value2' OR var3='value3'"
--
Edit bug report at http://bugs.php.net/?id=32524&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=32524&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=32524&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=32524&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=32524&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=32524&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=32524&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=32524&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=32524&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=32524&r=support
Expected behavior: http://bugs.php.net/fix.php?id=32524&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=32524&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=32524&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=32524&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=32524&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=32524&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=32524&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=32524&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=32524&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=32524&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=32524&r=mysqlcfg
