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An Introduction to PHP... and Why It's Yucky!
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Jorge Silva Jetter
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A short introduction to some of the good parts and bad parts of PHP.
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An Introduction to PHP... and Why It's Yucky!
1.
<?php ?> echo
`An introduction to PHP`;
2.
<?php ?> echo
`An introduction to PHP`; echo `7 reasons why it’s yucky`;
3.
<?php ?> echo
`First, the good parts`; var_dump([ `Web’s most popular server lang`, `Incredibly easy to deploy`, `WordPress, uber popular framework`, `Templating is built-in` ]);
4.
<?php ?> echo
`Problem #1`; echo `Templating is built-in`; foreach($arr as $el) { echo `<p>`; echo doSomeMysteriousThing($el); echo `</p>`; }
5.
<?php ?> echo
`Problem #2`; echo `It can be very inconsistent`; echo 'hello nworld'; // hello nworld echo "hello nworld"; // hello // world
6.
<?php ?> echo
`Problem #3`; echo `Everything is a function!!!`; array_push($arr, `abc`); // 5.3 array_key_exists($arr, `abc`); // bool $r = array_merge($arr, [`abc`]); $r = array_map(`func`, $arr); $r = count($arr);
7.
<?php ?> echo
`Problem #4`; echo `Equality is unequal`; `6` == ` 6` // true `133` == `0133` && 133 != 0133; // true `foo` == 0 && `foo` == true; // true NULL < -1 && NULL == 0; // true
8.
<?php ?> echo
`Problem #5`; echo `Scope is weird...`; if (1 === 1) { $v = `if`; } function a() { $v = `a`; } function b() { global $v; $v = `b`; } a(); echo $v; // `if` b(); echo $v; // `b`
9.
<?php ?> echo
`Problem #6`; echo `Debugging is terrible!`; echo $arr; // `Array` print_r($arr); // Array ( [0] => 1 [1] var_dump($arr); // array(4) { [0]=> int( var_dump(debug_backtrace());
10.
<?php ?> echo
`Problem #7`; echo `Documentation is terrible`; echo ($documentation == $forum); // 1
11.
<?php ?> echo
`In the end...`;
12.
<?php ?> echo
`In the end...`; echo `...it doesn’t matter that much`; $u = `http://blog.codinghorror.com/`; $u .= `php-sucks-but-it-doesnt-matter`; echo $u;
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