php strpos
$myString = 'Hello Bob how are you?';
if (strpos($myString, 'Bob') !== false) {
echo "My string contains Bob";
}php strpos
$myString = 'Hello Bob how are you?';
if (strpos($myString, 'Bob') !== false) {
echo "My string contains Bob";
}php obscure string
/**
* @param string|string[] $plain
* @param int $revealStart
* @param int $revealEnd
* @param string $obscuration
* @return string|string[]
*/
function obscure(
$plain,
int $revealStart = 1,
int $revealEnd = 0,
string $obscuration = '*'
) {
if (is_array($plain)) {
return array_map(
function ($plainPart) use ($revealStart, $revealEnd, $obscuration) {
return obscure($plainPart, $revealStart, $revealEnd, $obscuration);
},
$plain
);
}
$plain = (string) $plain;
return mb_substr($plain, 0, $revealStart)
. str_repeat(
$obscuration,
max(
0,
mb_strlen($plain) -
($revealStart + $revealEnd)
)
)
. mb_substr(
$plain,
-$revealEnd,
$revealEnd
);
}php heredoc
$output = <<<HTML
<p>Lorem ipsum dolor sit amet consectetur<p>
<a href="{$foobar}">click here</a>
HTML;php string functions
#String Functions
substr() #Returns a portion of a string
===========
<?php
#substr() Returns a portion of a string
$output = substr('Hello', 1, 3);
$output1 = substr('Hello', -2);//starts from the back of the string
echo $output;
echo '<br>';
echo $output1;
?>
===============
strlen() #Returns the length of a string
===============
$output = strlen('Hello');
echo $output;
?>
===============
strpos() #finds the position of the first occurence of a sub string
===============
$output = strpos('Hello World', 'o');
echo $output;
$output1 = strrpos('Hello World', 'o'); #last occurance
echo $output1;
================
trim() # trims white space
================
$text = 'Hello World ';
var_dump($text);
echo '<br>';
$trimmed = trim($text);
echo $trimmed;
echo '<br>';
var_dump($trimmed);
==================
strtoupper() # makes everything uppercase
==================
$text = 'Hello World';
$uppercase = strtoupper($text);
echo $uppercase;
==================
strtolower() #makes everything lowercase
==================
$text = 'Hello World';
$lowercase = strtolower($text);
echo $lowercase;
==================
ucwords() #Capitalizes every word
===================
$text = 'hello world';
$proppercase = ucwords($text);
echo $proppercase;
==================
str_replace() #Replace all occurances of a search string
#with a replacement
==================
$text = 'hello world';
$wordreplace = str_replace('world', 'john', $text);
echo $wordreplace;
=================
is_string() #Checks to see if it is a string
=================
$val = 'Hello';
$output = is_string($val);
echo $output;
echo '<br>';
$values = array(true, false, null, 'abc', 33, '33',
22.4, '22.4', '', ' ', 0, '0');
foreach($values as $value){
if(is_string($value)){
echo "{$value} is a string<br>";
}
}
=================
gzcompress() # Compress a string
=================
$string =
"a;laksd;lk;lkasd;lkas;lk;lkd;lkasd;lka;lskd;lka;lkd;lk
as;l;laksd;lk;lkasd;lkas;ldk;laskd;lakd;lkad;l
adslkjlkasjdlkjlkjaslkjaslkdjlkajdlkajdlkajd
alskdjlkasjdlkjadlkjadlkjadlkjadlajd
adlkjlkjalksjdlkjlkjlkjklajsda";
$compressed = gzcompress($string);
echo $compressed;
echo '<br>';
$original = gzuncompress($compressed);
echo $original;heredoc php
<?php
$str = <<<EOD
Exemple de chaîne
sur plusieurs lignes
en utilisant la syntaxe Heredoc.
EOD;
/* Exemple plus complexe, avec des variables. */
class foo
{
var $foo;
var $bar;
function __construct()
{
$this->foo = 'Foo';
$this->bar = array('Bar1', 'Bar2', 'Bar3');
}
}
$foo = new foo();
$name = 'MyName';
echo <<<EOT
Mon nom est "$name". J'affiche quelques $foo->foo.
Maintenant, j'affiche quelques {$foo->bar[1]}.
Et ceci devrait afficher un 'A' majuscule : \x41
EOT;
?>php string
<?php
$x = "Hello world!";
$y = 'Hello world!';
echo $x;
echo "<br>";
echo $y;
?>Copyright © 2021 Codeinu
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