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@ 2022-03-12T11:53:29Z

<?php

$MsgAry1 = ["A","B","C","D","E","F","G","H","I","J",
           "K","L","M","N","O","P","Q","R","S","T",
           "U","V","W","X","Y","Z","a","b","c","d",
           "e","f","g","h","i","j","k","l","m","n",
           "o","p","q","r","s","t","u","v","w","x",
           "y","z","1","2","3","4","5","6","7","8",
           "9","0",".",",","'","?","!"," ","_","-"];

$strings = [
    'test',
    '1234',
    'w0ws3r!',
    '##tag##',
    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.,'?! _-"
];

foreach ($strings as $string) {
    echo "$string match: " . var_export(!preg_match('~[^\w.,\'?! -]~', $string), true) . "\n";
    echo "$string ltrim:  " . var_export(!strlen(ltrim($string, implode($MsgAry1))), true) . "\n";
    echo "$string ranged ltrim, chars remaining: \"" . ltrim($string, 'A..Za..z0..9.,\'?! _-') .  "\"\n---\n";
}

Output for git.master, git.master_jit, rfc.property-hooks: test match: true test ltrim: true test ranged ltrim, chars remaining: "" --- 1234 match: true 1234 ltrim: true 1234 ranged ltrim, chars remaining: "" --- w0ws3r! match: true w0ws3r! ltrim: true w0ws3r! ranged ltrim, chars remaining: "" --- ##tag## match: false ##tag## ltrim: false ##tag## ranged ltrim, chars remaining: "##tag##" --- ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.,'?! _- match: true ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.,'?! _- ltrim: true ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.,'?! _- ranged ltrim, chars remaining: "" ---

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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