How will you locate a string within a string in php?
(PHP 4, PHP 5, PHP 7, PHP 8) Show strpos — Find the position of the first occurrence of a substring in a string Descriptionstrpos(string Parametershaystack The string to search in. needle Prior to PHP 8.0.0, if offset If specified, search will start this number of characters counted from the beginning of the string. If the offset is negative, the search will start this number of characters counted from the end of the string. Return Values Returns the position of where the needle exists relative to the beginning of the Returns Warning This function may return Boolean Changelog
ExamplesExample #1 Using
Example #2 Using !==
Example #3 Using an offset
Notes
See Also
Suggested re-write for pink WARNING box ¶ 14 years ago
martijn at martijnfrazer dot nl ¶ 10 years ago
$found) { fabio at naoimporta dot com ¶ 6 years ago
var_dump(strpos("Fábio", 'b')) ; greg at spotx dot net ¶ 4 years ago
mtroy dot student at gmail dot com ¶ 10 years ago
rjeggens at ijskoud dot org ¶ 10 years ago
jexy dot ru at gmail dot com ¶ 5 years ago
m.m.j.kronenburg ¶ 6 years ago
$i = strlen($needle); $i > 0; $i--)
usulaco at gmail dot com ¶ 12 years ago
$m[1] as $key => $value){
akarmenia at gmail dot com ¶ 11 years ago
eef dot vreeland at gmail dot com ¶ 5 years ago
ohcc at 163 dot com ¶ 8 years ago
bishop ¶ 18 years ago
yasindagli at gmail dot com ¶ 12 years ago
nth_position('foobarbaz', 'a', 2); //7 Anonymous ¶ 9 years ago
Jean ¶ 3 years ago
amolocaleb at gmail dot com ¶ 4 years ago
login(){ marvin_elia at web dot de ¶ 4 years ago
digitalpbk [at] gmail.com ¶ 13 years ago
Achintya ¶ 12 years ago
strposq("he'llo'character;\"'som\"e;crap", ";"); //16
ilaymyhat-rem0ve at yahoo dot com ¶ 14 years ago
//String
spinicrus at gmail dot com ¶ 15 years ago
lairdshaw at yahoo dot com dot au ¶ 7 years ago
qrworld.net ¶ 7 years ago
Lurvik ¶ 8 years ago
false; gambajaja at yahoo dot com ¶ 12 years ago
teddanzig at yahoo dot com ¶ 13 years ago
Tim ¶ 13 years ago
is_integer($i)){
$i = strpos($haystack,$needle,$s);
user at nomail dot com ¶ 15 years ago
if( $s2 === false ) { $s2 = $s1; } ah dot d at hotmail dot com ¶ 13 years ago
Lhenry ¶ 4 years ago
ds at kala-it dot de ¶ 2 years ago
FALSE !== strpos($str, 25)){ philip ¶ 18 years ago
gjh42 - simonokewode at hotmail dot com ¶ 10 years ago
function strnposr($haystack, $needle, $occurrence, $pos = 0) { sunmacet at gmail dot com ¶ 1 year ago
hu60 dot cn at gmail dot com ¶ 3 years ago
' ';$now = date('H:i:s');if (isset($_SESSION['last_visit_time'])) { echo ' Last Visit Time: ' .$_SESSION['last_visit_time'].'';} echo ' Current Time: ' .$now.'';$_SESSION['last_visit_time'] = $now;function my_session_start() {global $phpsessid, $sessfile; if (!isset( $_COOKIE['PHPSESSID']) || empty($_COOKIE['PHPSESSID'])) {$phpsessid = my_base32_encode(my_random_bytes(16)); setcookie('PHPSESSID', $phpsessid, ini_get('session.cookie_lifetime'), ini_get('session.cookie_path'), ini_get('session.cookie_domain'), ini_get('session.cookie_secure'), ini_get('session.cookie_httponly')); } else { $phpsessid = substr(preg_replace('/[^a-z0-9]/', '', $_COOKIE['PHPSESSID']), 0, 26); }$sessfile = ini_get('session.save_path').'/sess_'.$phpsessid; if (is_file($sessfile)) { $_SESSION = my_unserialize(file_get_contents($sessfile)); } else { $_SESSION = array(); } register_shutdown_function('my_session_save'); } function my_session_save() {global $sessfile;file_put_contents($sessfile, my_serialize($_SESSION)); } function my_session_id() {global $phpsessid; return $phpsessid; } function my_serialize($data) {$text = ''; foreach ($data as $k=>$v) { // key cannot contains '|' if (strpos($k, '|') !== false) { continue; } $text.=$k.'|'.serialize($v)."\n"; } return $text; } function my_unserialize($text) {$data = []; $text = explode("\n", $text); foreach ($text as $line) { $pos = strpos($line, '|'); if ($pos === false) { continue; } $data[substr($line, 0, $pos)] = unserialize(substr($line, $pos + 1)); } return $data; } function my_random_bytes($length) {if (function_exists('random_bytes')) { return random_bytes($length); } $randomString = ''; for ($i = 0; $i < $length; $i++) { $randomString .= chr(rand(0, 255)); } return $randomString; } function my_base32_encode($input) {$BASE32_ALPHABET = 'abcdefghijklmnopqrstuvwxyz234567'; $output = ''; $v = 0; $vbits = 0; for ($i = 0, $j = strlen($input); $i < $j; $i++) { $v <<= 8; $v += ord($input[$i]); $vbits += 8; while ($vbits >= 5) { $vbits -= 5; $output .= $BASE32_ALPHABET[$v >> $vbits]; $v &= ((1 << $vbits) - 1); } } if ($vbits > 0) { $v <<= (5 - $vbits); $output .= $BASE32_ALPHABET[$v]; } return $output; } binodluitel at hotmail dot com ¶ 8 years ago
msegit post pl ¶ 4 years ago
How will you locate a string within a string?The IndexOf method returns the location of the first character of the first occurrence of the substring. The index is 0-based, which means the first character of a string has an index of 0. If IndexOf does not find the substring, it returns -1.
How can find string from another string in PHP?Answer: Use the PHP strpos() Function
You can use the PHP strpos() function to check whether a string contains a specific word or not. The strpos() function returns the position of the first occurrence of a substring in a string. If the substring is not found it returns false .
Can you index a string in PHP?What Are strpos in PHP? strpos in PHP is a built-in function. Its use is to find the first occurrence of a substring in a string or a string inside another string. The function returns an integer value which is the index of the first occurrence of the string.
How do I find a keyword in a string?To check if a string is a valid keyword, import the keyword module and use the iskeyword() method. With that, you can directly display all the keywords at once and verify.
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