code snippets in 140 characters or less
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Array

Perform a function on an array of items (105)
Date Published: November 07, 2009
<?php
$old = array('Block', 'inline');
$new = array_map('strtoupper', $old);
// $new is now array('BLOCK', 'INLINE');
?>

Parse JSON Data (135)
Date Published: November 07, 2009
<?php
$json ='{"id":1,"name":"foo","interest":["wordpress","php"]} ';
$obj=json_decode($json);
echo $obj->interest[1]; //prints php
?>

Simple Array (111)
Date Published: October 20, 2009
<?php
$x=array(1=>"one","two","three");
foreach ($x as $key => $val)
{
echo $key . "=>" . $val . "<br />";
}
?>

Fast Letter Wheel (89)
Date Published: October 20, 2009
<?php
foreach (range('a', 'z') as $char) {
print '<a href="#' . $char . '">'
. $char . '</a> | ';
}
?>

Check if value is in array and returns Yes or No (126)
Date Published: October 20, 2009
<?php
$names = array( 'Bob', 'Jim', 'Mark' );
echo 'In Array?';
if (in_array(foo, $names))
echo 'Yes';
else
echo 'No';
?>

Find File Extension [CSS-TRICKS.COM](94)
Date Published: October 20, 2009
<?php
$filename = 'mypic.gif';
$ext = pathinfo($filename,
PATHINFO_EXTENSION);
echo "." . $ext;
?>