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@ 2025-08-11T20:20:02Z

<?php

/*
    Illustrating PHP Function parameters.
*/

class o {
    private $v = 0;
    
    public function inc() {
        $this->v++;
    }
    
    public function getV() {
        return $this->v;
    }
}

function testParams(o $obj) {
    for ($x=0; $x < 10; $x++) {
        $obj->inc();
    }
    return $obj->getV();
}

function testParams2($fp, $text) {
    $text = "1." . $text . PHP_EOL;
    fwrite($fp, $text);    
}

// Pass Array by Reference
function testParams3(Array &$globArray) {
    array_push($globArray, 'grape');
}

// Globally scoped variables
$globArray = ['apple', 'banana', 'peach'];
$obj = new o();
$r = fopen("/tmp/resource.txt", "w+");
$text = "This is some text.";
//

$retVal = testParams($obj);
echo $retVal . PHP_EOL;  
echo $obj->getV() . PHP_EOL;

echo PHP_EOL;
echo "text before testParams2: \n";
echo "\t$text" . PHP_EOL;
testParams2($r, $text);
rewind($r);
$fileData = fgets($r, 4096);
echo "File Data:\n";
echo "\t$fileData";
echo "text After testParams2::\n";
echo "\t$text" . PHP_EOL;

echo PHP_EOL;
echo "Array Before testParams3:\n";
var_dump($globArray);

echo PHP_EOL;
testParams3($globArray);
echo "Array After testParams3:\n";
var_dump($globArray);

Output for git.master_jit, git.master: Warning: Module "Zend OPcache" is already loaded in Unknown on line 0 Warning: Zend OPcache: module registration failed! in Unknown on line 0 10 10 text before testParams2: This is some text. File Data: 1.This is some text. text After testParams2:: This is some text. Array Before testParams3: array(3) { [0]=> string(5) "apple" [1]=> string(6) "banana" [2]=> string(5) "peach" } Array After testParams3: array(4) { [0]=> string(5) "apple" [1]=> string(6) "banana" [2]=> string(5) "peach" [3]=> string(5) "grape" }

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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