в 10:37, 26 мая 2010

2010-05-26T10:37:25Z

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2010-05-26T07:02:47Z

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==Add the prefix pts to each array key and then make each variable that results into a reference.==



<source lang="html4strict">

<?php
$points = array("home" => 21, "away" => 13);
extract($points, EXTR_REFS|EXTR_PREFIX_ALL, "pts");
$pts_home -= 4;
$pts_away += 6;
printf("%s", var_export($points, TRUE));
?>

</source>

==extract( ) function converts elements into variables==



<source lang="html4strict">

//int extract ( array arr [, int options [, string prefix]] )
<?
$Wales = "Wales";
$capitalcities = array("England"=>"London","Scotland"=>"Edinburgh", "Wales"=>"Cardiff");
extract($capitalcities);
print $Wales;
?>

</source>

==Extracting Values from Arrays with extract()==



<source lang="html4strict">

<?php
$customer = array("first" => "R", "last" => "W", "age" => 24, );
extract($customer);
print "$first $last is $age years old.";
extract($customer, EXTR_PREFIX_ALL, "cust");
print "$cust_first $cust_last is $cust_age years old.";
?>

</source>

==extract($points, EXTR_REFS|EXTR_PREFIX_ALL, "pts");==



<source lang="html4strict">

<?php
$points = array("home" => 21, "away" => 13);
extract($points, EXTR_REFS|EXTR_PREFIX_ALL, "pts");
$pts_home -= 4;
$pts_away += 6;
printf("<pre>%s</pre>", var_export($points, TRUE));
?>

</source>

==extract($scores, EXTR_PREFIX_ALL, "score");==



<source lang="html4strict">

<?php
$scores = array(91, 56, 87, 79);
extract($scores, EXTR_PREFIX_ALL, "score");
print "$score_0";
print "$score_1";
print "$score_2";
print "$score_3";
?>

</source>

==Using extract on an associative array==



<source lang="html4strict">

<?php
$shapes = array("S" => "Cylinder",
"N" => "Rectangle",
"A" => "Sphere",
"O" => "Sphere",
"P" => "Rectangle");
extract($shapes);
echo $Apple;
echo " ";
echo $Notepad;
?>

</source>

==Using extract with the EXTR_PREFIX_ALL directive==



<source lang="html4strict">

<?php
$Apple="Computer";
$shapes=array("S" => "Cylinder",
"N" => "Rectangle",
"A" => "Sphere",
"O" => "Sphere",
"P" => "Rectangle");
extract($shapes,EXTR_PREFIX_ALL,"shapes");
echo "Apple is $Apple. ";
echo "Shapes_Apple is $shapes_Apple";
echo " ";
echo "Shapes_NotePad is $shapes_NotePad";
?>

</source>

==Using EXTR_PREFIX_ALL on a numeric array==



<source lang="html4strict">

<?php
$shapes=array( "Cylinder",
"Rectangle");
extract($shapes,EXTR_PREFIX_ALL,"shapes");
echo "Shapes_0 is $shapes_0
 ";
echo "Shapes_1 is $shapes_1
";
?>

</source>

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в 10:37, 26 мая 2010

Admin: 1 версия