php Programming Glossary: strlen

How to evaluate formula passed as string in PHP?

http://stackoverflow.com/questions/1015242/how-to-evaluate-formula-passed-as-string-in-php

expr trim expr if substr expr 1 1 ' ' expr substr expr 0 strlen expr 1 strip semicolons at the end is it a variable assignment.. val else it's a plain old var or num output val index strlen val elseif op ' ' miscellaneous error checking return this.. return this trigger an unexpected error occured if index strlen expr if in_array op ops did we end with an operator bad. return..

How can I get a hex dump of a string in PHP?

http://stackoverflow.com/questions/1057572/how-can-i-get-a-hex-dump-of-a-string-in-php

improve this question echo bin2hex string or for i 0 i strlen string i echo dechex ord string i share improve this answer..

How to encrypt/decrypt data in php?

http://stackoverflow.com/questions/10916284/how-to-encrypt-decrypt-data-in-php

constant time string compare function isEqual str1 str2 n1 strlen str1 if strlen str2 n1 return false for i 0 diff 0 i n1 i diff.. compare function isEqual str1 str2 n1 strlen str1 if strlen str2 n1 return false for i 0 diff 0 i n1 i diff ord str1 i ^..

Replace URLs in text with HTML links

http://stackoverflow.com/questions/1188129/replace-urls-in-text-with-html-links

text parsing from after the URL. position urlPosition strlen url Print the remainder of the text. print htmlspecialchars..

“Warning: Cannot modify header information - headers already sent by” error [duplicate]

http://stackoverflow.com/questions/1912029/warning-cannot-modify-header-information-headers-already-sent-by-error

if strpos MM_restrictGoTo MM_qsChar if isset QUERY_STRING strlen QUERY_STRING 0 MM_referrer . . QUERY_STRING MM_restrictGoTo..

How to mimic StackOverflow Auto-Link Behavior

http://stackoverflow.com/questions/1925455/how-to-mimic-stackoverflow-auto-link-behavior

url PHP_URL_PATH text preg_replace ^www. text last strlen strrchr text 1 if last 0 text substr text 0 last . hellip ..

How to generate all permutations of a string in PHP?

http://stackoverflow.com/questions/2617055/how-to-generate-all-permutations-of-a-string-in-php

of all characters in one string. I've tried langd strlen input for i 0 i langd i tempStrang NULL tempStrang . substr.. to generate and print all N permutations of str. N strlen str . function permute str i n if i n print str n else for j.. j temp str i str i str j str j temp str hey permute str 0 strlen str call the function. Output #php a.php hey hye ehy eyh yeh..

How do you use bcrypt for hashing passwords in PHP?

http://stackoverflow.com/questions/4795385/how-do-you-use-bcrypt-for-hashing-passwords-in-php

function hash input hash crypt input this getSalt if strlen hash 13 return hash return false public function verify input.. 'rb' FALSE bytes fread hRand count fclose hRand if strlen bytes count bytes '' if this randomState null this randomState..

DOMDocument in php

http://stackoverflow.com/questions/4979836/domdocument-in-php

' foreach tags as tag string string trim tag nodeValue if strlen string 3 echo string echo ' br ' but I'm getting a string stripped..

PHP 2-way encryption: I need to store passwords that can be retrieved

http://stackoverflow.com/questions/5089841/php-2-way-encryption-i-need-to-store-passwords-that-can-be-retrieved

protected function pbkdf2 algo key salt rounds length size strlen hash algo '' true len ceil length size result '' for i 1 i len.. this cipher this mode padAmount length strlen data length if padAmount 0 padAmount length return data ... mcrypt_get_block_size this cipher this mode last ord data strlen data 1 if last length return false if substr data 1 last str_repeat..

How to validate an Email in PHP?

http://stackoverflow.com/questions/5855811/how-to-validate-an-email-in-php

large values. Simple and safe workaround for this is using strlen before filter_var . I'm not sure about 5.3.4 final but it is..

How to Truncate a string in PHP to the word closest to a certain number of characters?

http://stackoverflow.com/questions/79960/how-to-truncate-a-string-in-php-to-the-word-closest-to-a-certain-number-of-chara

To handle this edge case one should do something like if strlen string your_desired_width string wordwrap string your_desired_width.. 0 last_part 0 for last_part parts_count last_part length strlen parts last_part if length your_desired_width break return implode..

PHP startsWith() and endsWith() functions

http://stackoverflow.com/questions/834303/php-startswith-and-endswith-functions

endsWith haystack needle return needle substr haystack strlen needle needle var_dump startsWith hello world hello true var_dump..