PHP array operation function array_push() function usage and definition

PHP array operation function array_push() function usage and definition_PHP tutorial

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Release： 2016-07-13 16:59:42

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A simple usage of the array_push() function. This is a commonly used function for array operations. Friends in need can refer to it

(PHP 4, PHP 5)

array_push — Push one or more elements to the end of an array (push)

Report a bug Description
int array_push ( array &$array , mixed $var [, mixed $... ] )
array_push() treats the array as a stack and pushes the passed variables to the end of the array. The length of array will increase according to the number of variables pushed onto the stack. The same effect as the following:

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$array[] = $var; ?>

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$array[] = $var;

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$a=array("Dog","Cat"); array_push($a,"Horse","Bird"); print_r($a); ?>

Repeat for each var.

Returns the new total number of cells in the array.

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$a=array("a"=>"Dog","b"=>"Cat"); array_push($a,"Horse","Bird"); print_r($a); ?>

Example 1

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$a=array("Dog","Cat");

array_push($a,"Horse","Bird");

print_r($a);

Output:

Array ( [0] => Dog [1] => Cat [2] => Horse [3] => Bird ) Example 2

Array with string keys:

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function array_pshift(&$array) { $keys = array_keys($array); $key = array_shift($keys); $element = $array[$key]; unset($array[$key]); return $element; } ?>

The code is as follows

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$a=array("a"=>"Dog","b"=>"Cat");

array_push($a,"Horse","Bird");

See array_pop(), array_shift() and array_unshift().

If you want to preserve the keys in the array, use the following:

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function array_pshift(&$array) { <🎜> $keys = array_keys($array); <🎜> $key = array_shift($keys); <🎜> $element = $array[$key]; <🎜> Unset($array[$key]); <🎜> Return $element; <🎜> } <🎜> ?> http://www.bkjia.com/PHPjc/631310.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/631310.htmlTechArticleA simple array_push() function usage, this is a commonly used function for array operations, friends in need You can refer to (PHP 4, PHP 5) array_push to push one or more units...