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Better way to check variable for null or empty string?
Since PHP is a dynamic language what's the best way of checking to see if a provided field is empty?
10 Answers
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string.IsNullOrEmpty(string) vs. string.IsNullOrWhiteSpace(string)
...NullOrEmpty(value) || value.Trim().Length == 0;, which involves new string allocation and two separate checks. Most probably inside IsNullOrWhitespace it is done via single pass without any allocations by checking that each char in the string is the whitespace, hence superior performance. What confu...
How can I put strings in an array, split by new line?
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Instead of \n you can use the predefined constant PHP_EOL.
– Tim
Jul 19 '12 at 14:58
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mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc… expects parameter 1 to
...ion:
NOTE The mysql_ functions are deprecated and have been removed in php version 7.
Check $result before passing it to mysql_fetch_array. You'll find that it's false because the query failed. See the mysql_query documentation for possible return values and suggestions for how to deal with th...
Get current domain
...ometimes forget which one to use myself - I think this can be nifty.
<?php
// Change banana.com to the domain you were looking for..
$wordToHighlight = "banana.com";
$serverVarHighlighted = str_replace( $wordToHighlight, '<span style=\'background-color:#883399; color: #FFFFFF;\'&g...
How to get the next auto-increment id in mysql
...om your SQL query.
Or
You can also use mysql_insert_id() to get it using PHP.
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How to delete an array element based on key? [duplicate]
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PHP
unset($array[1]);
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Is there already a Google+ API? [closed]
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There is an unofficial API, PHP.GooglePlusAPI, that you can use this to fetch public data. It's something to play around with while we're waiting for the full official API from Google:
Update:
I've just added support for feed posts as well. You can us...
What do I have to do to get Core Data to automatically migrate models?
...Error *error;
_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: [self managedObjectModel]];
if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:options error:&error]) {
// Handle ...
Which Python memory profiler is recommended? [closed]
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Note, heapy doesn't include memory allocated in python extensions. If anybody has worked out a mechanism to get heapy to include boost::python objects, it would be nice to see some examples!
– amos
Jul 3 '14 at 18:08
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