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Join vs. sub-query

sql mysql subquery join asked Apr 5, 2010 at 6:22

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373 votes

Stack Overflow technology makes me write bad answers

discussion stackoverflow answer-quality asked Mar 10, 2013 at 11:11

meta.stackexchange.com

53 votes

Reference — frequently asked questions about PDO

php pdo asked Apr 13, 2013 at 17:41

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34 votes

Serial pointless editing

feature-request edits review-abuse serial-edits asked Oct 31, 2013 at 11:11

meta.stackexchange.com

23 votes

file_get_contents returns empty string

php fopen asked Nov 13, 2010 at 14:00

stackoverflow.com

21 votes

Stack Overflow efficiency shown by simple but vivid example

discussion unanswered-questions question-quality asked Feb 23, 2014 at 12:02

meta.stackexchange.com

18 votes

Is it possible to attack a user password with known salt

php security passwords salt asked Feb 21, 2011 at 9:13

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18 votes

Is it possible to make MySQL use an index for the ORDER by 1 DESC, 2 ASC?

mysql index materialized-path-pattern asked Apr 30, 2012 at 10:44

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17 votes

A rule of thumb to tell if a question on topic or not?

discussion close-reasons off-topic too-localized asked Nov 17, 2013 at 15:50

meta.stackexchange.com

15 votes

Why PHP casts two numerical strings to numbers before [loosely] comparing them?

php casting comparison string-comparison asked Jun 2, 2013 at 5:09

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Top Answers

1191

How can I prevent SQL injection in PHP?

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424

How can prepared statements protect from SQL injection attacks?

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195

What to do with mysqli problems? Errors such as mysqli_fetch_array(): Argument #1 must be of type mysqli_result

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166

PHP - Using PDO with IN clause array

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159

How can I use PHP to check if a directory is empty?

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137

How to include a PHP variable inside a MySQL statement

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129

Obtain first line of a string in PHP

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116

Why shouldn't I use mysql_* functions in PHP?

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116

Remove quotes from start and end of string in PHP

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116

How to increase my "advanced" knowledge of PHP further? (quickly)

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113

Delete directory with files in it?

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110

Why am I getting PHP fatal error failed opening required file?

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Opening/closing tags & performance?

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What is meant by a number after "break" or "continue" in PHP?

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Single result from database using mysqli

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mysqli or die, does it have to die?

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Why does this PDO statement silently fail?

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mysql_fetch_array() expects parameter 1 to be resource (or mysqli_result), boolean given

ru.stackoverflow.com

How can I bind an array of strings with a mysqli prepared statement?

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How do I set ORDER BY params using prepared PDO statement?

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When is it best to sanitize user input?

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Passing an array to a query using a WHERE clause

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Why SUM(`column`) returns a string instead of an integer?

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Differences between Perl and PHP

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How to apply bindValue method in LIMIT clause?

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How do I convert a string to a number in PHP?

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Row count with PDO

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Show MySQL tables starting with prefix?

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Replace all spaces and special symbols with dash in URL using PHP language

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Do I have to guard against SQL injection if I used a dropdown?

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