How do you check if a string contains a word in php?
You could use regular expressions as it's better for word matching compared to Show A simple match for
On the performance side, Edit: In order to search any part of the string, not just word by word, I would recommend using a regular expression like
The Now, this
can be quite problematic in some cases as the $search string isn't sanitized in any way, I mean, it might not pass the check in some cases as if Also, here's a great tool for testing and seeing explanations of various regular expressions Regex101 To combine both sets of functionality into a single multi-purpose function (including with selectable case sensitivity), you could use something like this:
One more thing to take in mind, is that The explanation for this and the solution is taken from here:
So in order to use the answer in PHP, you can use this function:
And if you want to search for array of words, you can use this:
As of PHP 8.0.0 you can now use str_contains (PHP 8) str_contains — Determine if a string contains a given substring Descriptionstr_contains(string Parametershaystack
The string to search in. needle The substring to search for in the Return Values Returns ExamplesExample #1 Using the empty string
The above example will output: Checking the existence of the empty string will always return true Example #2 Showing case-sensitivity
str_contains($string, 'lazy')) { The above example will output: The string 'lazy' was found in the string "Lazy" was not found because the case does not match Notes
See Also
scm6079 ¶ 1 year ago
aisunny7 dot xy at gmail dot com ¶ 8 months ago
juliyvchirkov at gmail dot com ¶ 1 year ago
drupalista dot com dot br at gmail dot com ¶ 5 months ago
olivertasche+nospam at gmail dot com ¶ 1 year ago
AuxData ¶ 10 months ago
kadenskinner at gmail dot com ¶ 1 year ago
= '@'; How do I check if a string contains text?You can use contains(), indexOf() and lastIndexOf() method to check if one String contains another String in Java or not. If a String contains another String then it's known as a substring. The indexOf() method accepts a String and returns the starting position of the string if it exists, otherwise, it will return -1.
How do I find a word in a string?To find a word in the string, we are using indexOf() and contains() methods of String class. The indexOf() method is used to find an index of the specified substring in the present string. It returns a positive integer as an index if substring found else returns -1.
How do you check if a string contains another string in PHP?Using strpos() and stripos()
You can use the PHP strpos() function to get the position of the first occurrence of a substring in a string. The function will return false if it cannot find the substring.
How do you check if a string contains any alphabet in PHP?A ctype_alpha() function in PHP used to check all characters of a given string are alphabetic or not. If all characters are alphabetic then return True otherwise return False.
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