1--TEST-- 2Test extract() with $this 3--FILE-- 4<?php 5 6class Extract 7{ 8 public function run(): void 9 { 10 $options = [ 11 'EXTR_OVERWRITE' => EXTR_OVERWRITE, 12 'EXTR_SKIP' => EXTR_SKIP, 13 'EXTR_PREFIX_SAME' => EXTR_PREFIX_SAME, 14 'EXTR_PREFIX_ALL' => EXTR_PREFIX_ALL, 15 'EXTR_PREFIX_INVALID' => EXTR_PREFIX_INVALID, 16 'EXTR_IF_EXISTS' => EXTR_IF_EXISTS, 17 'EXTR_PREFIX_IF_EXISTS' => EXTR_PREFIX_IF_EXISTS, 18 ]; 19 20 foreach ($options as $name => $flags) { 21 echo "{$name}\n"; 22 23 $this->handle($name, $flags); 24 $this->handle("{$name}_REFS", $flags | EXTR_REFS); 25 echo "\n"; 26 } 27 } 28 29 private function handle(string $name, int $flags): void 30 { 31 $array = ["this" => "value"]; 32 33 try { 34 $result = extract($array, $flags, "x"); 35 echo " extract() = {$result}\n"; 36 37 echo " \$this = " . get_class($this) . "\n"; 38 echo " \$v_this = " . (isset($x_this) ? $x_this : "NULL") . "\n"; 39 } catch (\Throwable $e) { 40 echo " Exception: " . $e->getMessage() . "\n"; 41 } 42 } 43} 44 45(new Extract)->run(); 46 47?> 48--EXPECT-- 49EXTR_OVERWRITE 50 Exception: Cannot re-assign $this 51 Exception: Cannot re-assign $this 52 53EXTR_SKIP 54 extract() = 0 55 $this = Extract 56 $v_this = NULL 57 extract() = 0 58 $this = Extract 59 $v_this = NULL 60 61EXTR_PREFIX_SAME 62 extract() = 1 63 $this = Extract 64 $v_this = value 65 extract() = 1 66 $this = Extract 67 $v_this = value 68 69EXTR_PREFIX_ALL 70 extract() = 1 71 $this = Extract 72 $v_this = value 73 extract() = 1 74 $this = Extract 75 $v_this = value 76 77EXTR_PREFIX_INVALID 78 extract() = 1 79 $this = Extract 80 $v_this = value 81 extract() = 1 82 $this = Extract 83 $v_this = value 84 85EXTR_IF_EXISTS 86 extract() = 0 87 $this = Extract 88 $v_this = NULL 89 extract() = 0 90 $this = Extract 91 $v_this = NULL 92 93EXTR_PREFIX_IF_EXISTS 94 extract() = 0 95 $this = Extract 96 $v_this = NULL 97 extract() = 0 98 $this = Extract 99 $v_this = NULL 100
