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PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.

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array_intersect_ukey

(PHP 5 >= 5.1.0RC1)

array_intersect_ukey -- Computes the intersection of arrays using a callback function on the keys for comparison

Description

array array_intersect_ukey ( array array1, array array2 [, array ..., callback key_compare_func] )

array_intersect_ukey() returns an array containing all the values of array1 which have matching keys that are present in all the arguments.

This comparison is done by a user supplied callback function. It must return an integer less than, equal to, or greater than zero if the first key is considered to be respectively less than, equal to, or greater than the second.

Example 1. array_intersect_ukey() example

<?php
function key_compare_func($key1, $key2)
{
    if ($key1 == $key2)
        return 0;
    else if ($key1 > $key2)
        return 1;
    else
        return -1;
}

$array1 = array('blue'  => 1, 'red'  => 2, 'green'  => 3, 'purple' => 4);
$array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan'   => 8);

var_dump(array_intersect_ukey($array1, $array2, 'key_compare_func'));
?>

The above example will output:

array(2) {
  ["blue"]=>
  int(1)
  ["green"]=>
  int(3)
}

In our example you see that only the keys 'blue' and 'green' are present in both arrays and thus returned. Also notice that the values for the keys 'blue' and 'green' differ between the two arrays. A match still occurs because only the keys are checked. The values returned are those of array1.

See also array_diff(), array_udiff() array_diff_assoc(), array_diff_uassoc(), array_udiff_assoc(), array_udiff_uassoc(), array_diff_key(), array_diff_ukey(), array_intersect(), array_intersect_assoc(), array_intersect_uassoc() and array_intersect_key().

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Another Useful functions:


zend-macro.zend-arg-array-info | zend-api.zend-get-parameters-array | zend-api.zend-get-parameters-array-ex | zend-api.zend-copy-parameters-array | zend-api.init-op-array | zend-api.destroy-op-array | zend-api.array-init | ref.array | language.types.array | language.operators.array | function.udm-alloc-agent-array | function.sybase-fetch-array | function.sqlite-fetch-array | function.sqlite-array-query | function.sesam-field-array | function.sesam-fetch-array | function.pg-fetch-array | function.odbc-fetch-array | function.oci-fetch-array | function.oci-bind-array-by-name | function.mysqli-fetch-array | function.mysql-fetch-array | function.mssql-fetch-array | function.msql-fetch-array | function.msession-set-array | function.msession-get-array | function.maxdb-fetch-array | function.iterator-to-array | function.is-array | function.ingres-fetch-array | function.in-array | function.hw-objrec2array | function.hw-array2objrec | function.httpquerystring-toarray | function.filter-var-array | function.filter-input-array | function.fbsql-fetch-array | function.db2-fetch-array | function.curl-setopt-array | function.call-user-method-array | function.call-user-func-array | function.arrayobject-offsetunset | function.arrayobject-offsetset | function.arrayobject-offsetget | function.arrayobject-offsetexists | function.arrayobject-getiterator | function.arrayobject-count | function.arrayobject-construct | function.arrayobject-append | function.arrayiterator-valid | function.arrayiterator-seek | function.arrayiterator-rewind | function.arrayiterator-next | function.arrayiterator-key | function.arrayiterator-current | function.array | function.array-walk | function.array-walk-recursive | function.array-values | function.array-unshift | function.array-unique | function.array-uintersect | function.array-uintersect-uassoc | function.array-uintersect-assoc | function.array-udiff | function.array-udiff-uassoc | function.array-udiff-assoc | function.array-sum | function.array-splice | function.array-slice | function.array-shift | function.array-search | function.array-reverse | function.array-reduce | function.array-rand | function.array-push | function.array-product | function.array-pop | function.array-pad | function.array-multisort | function.array-merge | function.array-merge-recursive | function.array-map | function.array-keys | function.array-key-exists | function.array-intersect | function.array-intersect-ukey | function.array-intersect-uassoc | function.array-intersect-key | function.array-intersect-assoc | function.array-flip | function.array-filter | function.array-fill | function.array-fill-keys | function.array-diff | function.array-diff-ukey | function.array-diff-uassoc | function.array-diff-key | function.array-diff-assoc | function.array-count-values | function.array-combine | function.array-chunk | function.array-change-key-case |


PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.