PHP: sort() function

PHP: Sort an array

The sort() function is used to sort array elements. Elements will be arranged from lowest to highest when this function has completed.


(PHP 4 and above)


sort(array_name, sorting_type)


Name Description Required /
array_name1 Specifies the array. Required Array
sorting_type Sets the sorting behavior.
Possible type :
SORT_REGULAR - Compare items normally.
SORT_NUMERIC - Compare items numerically.
SORT_STRING - Compare items as strings.
SORT_LOCALE_STRING - compare items as strings, based on the current locale.
Optional Mixed*

*Mixed: Mixed indicates that a parameter may accept multiple (but not necessarily all) types.

Return value:

TRUE on success or FALSE on failure.

Value Type : Boolean.


$subject = array("Language",  "English", "Math", "History");
foreach ($subject as $key => $val)
echo "subject[ " . $key . "] = " . $val . "<br />";


subject[ 0] = English
subject[ 1] = History
subject[ 2] = Language
subject[ 3] = Math

Pictorial Presentation:

php function reference: sort() function

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See also

PHP Function Reference

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PHP: Tips of the Day

SQL injection that gets around mysql_real_escape_string()

Consider the following query:

$iId = mysql_real_escape_string("1 OR 1=1");    
$sSql = "SELECT * FROM table WHERE id = $iId";

mysql_real_escape_string() will not protect you against this. The fact that you use single quotes (' ') around your variables inside your query is what protects you against this. The following is also an option:

$iId = (int)"1 OR 1=1";
$sSql = "SELECT * FROM table WHERE id = $iId";

Ref : https://bit.ly/32q3bJ7